./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-3.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 a37ff9cc75e7eb9f5325f8fa274b6f05ade1742d661d8f4c826631afb9b4bde2 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 13:40:20,168 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 13:40:20,219 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-17 13:40:20,222 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 13:40:20,225 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 13:40:20,238 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 13:40:20,240 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 13:40:20,240 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 13:40:20,240 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 13:40:20,240 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 13:40:20,241 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 13:40:20,241 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 13:40:20,241 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 13:40:20,241 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 13:40:20,241 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 13:40:20,241 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 13:40:20,241 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 13:40:20,241 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 13:40:20,241 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 13:40:20,241 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 13:40:20,241 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-17 13:40:20,242 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-17 13:40:20,242 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-17 13:40:20,242 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 13:40:20,242 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-17 13:40:20,242 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 13:40:20,242 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 13:40:20,242 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 13:40:20,242 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 13:40:20,242 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 13:40:20,242 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 13:40:20,242 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 13:40:20,242 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 13:40:20,242 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 13:40:20,242 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 13:40:20,242 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 13:40:20,242 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 13:40:20,242 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 13:40:20,242 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 13:40:20,242 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 13:40:20,242 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 13:40:20,242 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 13:40:20,242 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 -> a37ff9cc75e7eb9f5325f8fa274b6f05ade1742d661d8f4c826631afb9b4bde2 [2025-03-17 13:40:20,477 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 13:40:20,485 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 13:40:20,487 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 13:40:20,488 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 13:40:20,488 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 13:40:20,489 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-3.i [2025-03-17 13:40:21,631 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b6fada3d/447fe656112d4d54ac1b1b77745d1d6c/FLAGc48ac1cbe [2025-03-17 13:40:21,960 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 13:40:21,961 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-3.i [2025-03-17 13:40:21,978 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b6fada3d/447fe656112d4d54ac1b1b77745d1d6c/FLAGc48ac1cbe [2025-03-17 13:40:22,211 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b6fada3d/447fe656112d4d54ac1b1b77745d1d6c [2025-03-17 13:40:22,213 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 13:40:22,214 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 13:40:22,215 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 13:40:22,216 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 13:40:22,220 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 13:40:22,220 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 01:40:22" (1/1) ... [2025-03-17 13:40:22,222 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71654707 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:40:22, skipping insertion in model container [2025-03-17 13:40:22,222 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 01:40:22" (1/1) ... [2025-03-17 13:40:22,261 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 13:40:22,512 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:40:22,541 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:40:22,544 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:40:22,547 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:40:22,550 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:40:22,570 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:40:22,573 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:40:22,575 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:40:22,578 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:40:22,593 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:40:22,593 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:40:22,594 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:40:22,595 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:40:22,596 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:40:22,597 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:40:22,598 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:40:22,599 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:40:22,599 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:40:22,602 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:40:22,603 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:40:22,603 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:40:22,604 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:40:22,606 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:40:22,614 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 13:40:22,626 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2025-03-17 13:40:22,626 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@71e52b50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:40:22, skipping insertion in model container [2025-03-17 13:40:22,627 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 13:40:22,627 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-03-17 13:40:22,629 INFO L158 Benchmark]: Toolchain (without parser) took 414.20ms. Allocated memory is still 142.6MB. Free memory was 111.0MB in the beginning and 87.1MB in the end (delta: 23.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-17 13:40:22,630 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 201.3MB. Free memory is still 123.5MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 13:40:22,631 INFO L158 Benchmark]: CACSL2BoogieTranslator took 411.67ms. Allocated memory is still 142.6MB. Free memory was 111.0MB in the beginning and 87.1MB in the end (delta: 23.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-17 13:40:22,632 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 201.3MB. Free memory is still 123.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 411.67ms. Allocated memory is still 142.6MB. Free memory was 111.0MB in the beginning and 87.1MB in the end (delta: 23.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 760]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-3.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 a37ff9cc75e7eb9f5325f8fa274b6f05ade1742d661d8f4c826631afb9b4bde2 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 13:40:24,267 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 13:40:24,370 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-03-17 13:40:24,375 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 13:40:24,375 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 13:40:24,392 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 13:40:24,393 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 13:40:24,393 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 13:40:24,394 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 13:40:24,394 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 13:40:24,395 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 13:40:24,395 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 13:40:24,395 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 13:40:24,395 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 13:40:24,395 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 13:40:24,396 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 13:40:24,396 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 13:40:24,396 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 13:40:24,396 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 13:40:24,396 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 13:40:24,396 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-17 13:40:24,396 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-17 13:40:24,396 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-17 13:40:24,397 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 13:40:24,397 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-17 13:40:24,397 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-17 13:40:24,397 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-17 13:40:24,397 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 13:40:24,397 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 13:40:24,397 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 13:40:24,397 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 13:40:24,397 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 13:40:24,398 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 13:40:24,398 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 13:40:24,398 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 13:40:24,398 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 13:40:24,398 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 13:40:24,398 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 13:40:24,399 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-17 13:40:24,399 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-17 13:40:24,399 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 13:40:24,399 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 13:40:24,399 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 13:40:24,399 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 13:40:24,399 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 -> a37ff9cc75e7eb9f5325f8fa274b6f05ade1742d661d8f4c826631afb9b4bde2 [2025-03-17 13:40:24,632 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 13:40:24,638 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 13:40:24,640 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 13:40:24,642 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 13:40:24,642 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 13:40:24,643 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-3.i [2025-03-17 13:40:25,857 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f33ad012/1be085237e4b494db2c0dbea4920e689/FLAGfbdca07e3 [2025-03-17 13:40:26,093 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 13:40:26,093 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-3.i [2025-03-17 13:40:26,105 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f33ad012/1be085237e4b494db2c0dbea4920e689/FLAGfbdca07e3 [2025-03-17 13:40:26,114 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f33ad012/1be085237e4b494db2c0dbea4920e689 [2025-03-17 13:40:26,116 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 13:40:26,117 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 13:40:26,118 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 13:40:26,118 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 13:40:26,121 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 13:40:26,121 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 01:40:26" (1/1) ... [2025-03-17 13:40:26,121 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9f977 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:40:26, skipping insertion in model container [2025-03-17 13:40:26,121 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 01:40:26" (1/1) ... [2025-03-17 13:40:26,155 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 13:40:26,398 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:40:26,423 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:40:26,426 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:40:26,430 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:40:26,435 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:40:26,459 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:40:26,461 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:40:26,463 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:40:26,466 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:40:26,499 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:40:26,499 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:40:26,501 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:40:26,501 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:40:26,502 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:40:26,503 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:40:26,508 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:40:26,509 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:40:26,509 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:40:26,513 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:40:26,513 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:40:26,514 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:40:26,514 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:40:26,517 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:40:26,524 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 13:40:26,537 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-03-17 13:40:26,547 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 13:40:26,579 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:40:26,586 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:40:26,587 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:40:26,588 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:40:26,590 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:40:26,600 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:40:26,601 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:40:26,602 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:40:26,606 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:40:26,620 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:40:26,620 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:40:26,623 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:40:26,625 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:40:26,626 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:40:26,628 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:40:26,628 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:40:26,629 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:40:26,629 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:40:26,634 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:40:26,635 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:40:26,635 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:40:26,635 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:40:26,639 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:40:26,642 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 13:40:26,648 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 13:40:26,730 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 13:40:26,757 INFO L204 MainTranslator]: Completed translation [2025-03-17 13:40:26,757 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:40:26 WrapperNode [2025-03-17 13:40:26,758 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 13:40:26,759 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 13:40:26,759 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 13:40:26,759 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 13:40:26,764 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:40:26" (1/1) ... [2025-03-17 13:40:26,800 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:40:26" (1/1) ... [2025-03-17 13:40:26,845 INFO L138 Inliner]: procedures = 180, calls = 474, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1686 [2025-03-17 13:40:26,846 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 13:40:26,846 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 13:40:26,846 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 13:40:26,846 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 13:40:26,852 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:40:26" (1/1) ... [2025-03-17 13:40:26,852 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:40:26" (1/1) ... [2025-03-17 13:40:26,865 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:40:26" (1/1) ... [2025-03-17 13:40:26,991 INFO L175 MemorySlicer]: Split 443 memory accesses to 3 slices as follows [2, 417, 24]. 94 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 99 writes are split as follows [0, 98, 1]. [2025-03-17 13:40:26,995 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:40:26" (1/1) ... [2025-03-17 13:40:26,995 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:40:26" (1/1) ... [2025-03-17 13:40:27,045 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:40:26" (1/1) ... [2025-03-17 13:40:27,048 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:40:26" (1/1) ... [2025-03-17 13:40:27,058 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:40:26" (1/1) ... [2025-03-17 13:40:27,064 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:40:26" (1/1) ... [2025-03-17 13:40:27,078 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 13:40:27,079 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 13:40:27,080 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 13:40:27,080 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 13:40:27,081 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:40:26" (1/1) ... [2025-03-17 13:40:27,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 13:40:27,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:40:27,106 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-17 13:40:27,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-17 13:40:27,131 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2025-03-17 13:40:27,132 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2025-03-17 13:40:27,132 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2025-03-17 13:40:27,132 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2025-03-17 13:40:27,132 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2025-03-17 13:40:27,132 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-03-17 13:40:27,132 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-03-17 13:40:27,132 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2025-03-17 13:40:27,132 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-17 13:40:27,132 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-17 13:40:27,132 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-03-17 13:40:27,132 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-03-17 13:40:27,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2025-03-17 13:40:27,133 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-03-17 13:40:27,133 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-03-17 13:40:27,133 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2025-03-17 13:40:27,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-17 13:40:27,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 13:40:27,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-17 13:40:27,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-17 13:40:27,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-17 13:40:27,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-17 13:40:27,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-17 13:40:27,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-17 13:40:27,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-17 13:40:27,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-17 13:40:27,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-03-17 13:40:27,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-03-17 13:40:27,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2025-03-17 13:40:27,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-17 13:40:27,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-03-17 13:40:27,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2025-03-17 13:40:27,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 13:40:27,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 13:40:27,340 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 13:40:27,342 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 13:40:31,216 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L734: call ULTIMATE.dealloc(main_~#j~0#1.base, main_~#j~0#1.offset);havoc main_~#j~0#1.base, main_~#j~0#1.offset; [2025-03-17 13:40:31,337 INFO L? ?]: Removed 1905 outVars from TransFormulas that were not future-live. [2025-03-17 13:40:31,338 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 13:40:31,371 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 13:40:31,371 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 13:40:31,371 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 01:40:31 BoogieIcfgContainer [2025-03-17 13:40:31,371 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 13:40:31,373 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 13:40:31,373 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 13:40:31,376 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 13:40:31,376 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 01:40:26" (1/3) ... [2025-03-17 13:40:31,377 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60852c17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 01:40:31, skipping insertion in model container [2025-03-17 13:40:31,377 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:40:26" (2/3) ... [2025-03-17 13:40:31,377 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60852c17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 01:40:31, skipping insertion in model container [2025-03-17 13:40:31,377 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 01:40:31" (3/3) ... [2025-03-17 13:40:31,378 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test5-3.i [2025-03-17 13:40:31,387 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 13:40:31,388 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_FNV_test5-3.i that has 6 procedures, 1820 locations, 1 initial locations, 55 loop locations, and 915 error locations. [2025-03-17 13:40:31,450 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 13:40:31,460 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;@3b2495b4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 13:40:31,461 INFO L334 AbstractCegarLoop]: Starting to check reachability of 915 error locations. [2025-03-17 13:40:31,466 INFO L276 IsEmpty]: Start isEmpty. Operand has 1810 states, 884 states have (on average 2.246606334841629) internal successors, (1986), 1800 states have internal predecessors, (1986), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 9 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-17 13:40:31,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-03-17 13:40:31,472 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:40:31,473 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-03-17 13:40:31,473 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr912REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 912 more)] === [2025-03-17 13:40:31,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:40:31,477 INFO L85 PathProgramCache]: Analyzing trace with hash 63013790, now seen corresponding path program 1 times [2025-03-17 13:40:31,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:40:31,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1890396997] [2025-03-17 13:40:31,484 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:40:31,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:40:31,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:40:31,489 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:40:31,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 13:40:31,632 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-17 13:40:31,637 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-17 13:40:31,637 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:40:31,637 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:40:31,640 INFO L256 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-17 13:40:31,642 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:40:31,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:40:31,648 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:40:31,648 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:40:31,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890396997] [2025-03-17 13:40:31,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890396997] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:40:31,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:40:31,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 13:40:31,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617388552] [2025-03-17 13:40:31,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:40:31,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-17 13:40:31,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:40:31,667 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-17 13:40:31,667 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 13:40:31,671 INFO L87 Difference]: Start difference. First operand has 1810 states, 884 states have (on average 2.246606334841629) internal successors, (1986), 1800 states have internal predecessors, (1986), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 9 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:40:31,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:40:31,751 INFO L93 Difference]: Finished difference Result 1790 states and 1891 transitions. [2025-03-17 13:40:31,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-17 13:40:31,752 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2025-03-17 13:40:31,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:40:31,771 INFO L225 Difference]: With dead ends: 1790 [2025-03-17 13:40:31,771 INFO L226 Difference]: Without dead ends: 1788 [2025-03-17 13:40:31,772 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 13:40:31,775 INFO L435 NwaCegarLoop]: 1891 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1891 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 13:40:31,777 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1891 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 13:40:31,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1788 states. [2025-03-17 13:40:31,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1788 to 1788. [2025-03-17 13:40:31,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1788 states, 874 states have (on average 2.1338672768878717) internal successors, (1865), 1778 states have internal predecessors, (1865), 13 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2025-03-17 13:40:31,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1788 states to 1788 states and 1889 transitions. [2025-03-17 13:40:31,877 INFO L78 Accepts]: Start accepts. Automaton has 1788 states and 1889 transitions. Word has length 4 [2025-03-17 13:40:31,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:40:31,877 INFO L471 AbstractCegarLoop]: Abstraction has 1788 states and 1889 transitions. [2025-03-17 13:40:31,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:40:31,877 INFO L276 IsEmpty]: Start isEmpty. Operand 1788 states and 1889 transitions. [2025-03-17 13:40:31,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-03-17 13:40:31,877 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:40:31,877 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-03-17 13:40:31,888 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-17 13:40:32,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:40:32,078 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr912REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 912 more)] === [2025-03-17 13:40:32,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:40:32,079 INFO L85 PathProgramCache]: Analyzing trace with hash 63013821, now seen corresponding path program 1 times [2025-03-17 13:40:32,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:40:32,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [634254628] [2025-03-17 13:40:32,079 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:40:32,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:40:32,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:40:32,081 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:40:32,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 13:40:32,207 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-17 13:40:32,211 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-17 13:40:32,212 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:40:32,212 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:40:32,213 INFO L256 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 13:40:32,214 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:40:32,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-17 13:40:32,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:40:32,249 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:40:32,249 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:40:32,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634254628] [2025-03-17 13:40:32,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634254628] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:40:32,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:40:32,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 13:40:32,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332207090] [2025-03-17 13:40:32,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:40:32,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 13:40:32,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:40:32,251 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 13:40:32,251 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:40:32,251 INFO L87 Difference]: Start difference. First operand 1788 states and 1889 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:40:34,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:40:34,206 INFO L93 Difference]: Finished difference Result 1919 states and 2052 transitions. [2025-03-17 13:40:34,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 13:40:34,206 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2025-03-17 13:40:34,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:40:34,212 INFO L225 Difference]: With dead ends: 1919 [2025-03-17 13:40:34,212 INFO L226 Difference]: Without dead ends: 1919 [2025-03-17 13:40:34,212 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:40:34,212 INFO L435 NwaCegarLoop]: 1351 mSDtfsCounter, 1253 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 1108 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1264 SdHoareTripleChecker+Valid, 1720 SdHoareTripleChecker+Invalid, 1207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-03-17 13:40:34,213 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1264 Valid, 1720 Invalid, 1207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1108 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-03-17 13:40:34,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1919 states. [2025-03-17 13:40:34,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1919 to 1696. [2025-03-17 13:40:34,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1696 states, 874 states have (on average 2.028604118993135) internal successors, (1773), 1686 states have internal predecessors, (1773), 13 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2025-03-17 13:40:34,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1696 states to 1696 states and 1797 transitions. [2025-03-17 13:40:34,256 INFO L78 Accepts]: Start accepts. Automaton has 1696 states and 1797 transitions. Word has length 4 [2025-03-17 13:40:34,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:40:34,256 INFO L471 AbstractCegarLoop]: Abstraction has 1696 states and 1797 transitions. [2025-03-17 13:40:34,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:40:34,256 INFO L276 IsEmpty]: Start isEmpty. Operand 1696 states and 1797 transitions. [2025-03-17 13:40:34,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-03-17 13:40:34,256 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:40:34,257 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-03-17 13:40:34,263 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-17 13:40:34,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:40:34,457 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr913REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 912 more)] === [2025-03-17 13:40:34,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:40:34,458 INFO L85 PathProgramCache]: Analyzing trace with hash 63013822, now seen corresponding path program 1 times [2025-03-17 13:40:34,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:40:34,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [467852047] [2025-03-17 13:40:34,458 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:40:34,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:40:34,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:40:34,460 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:40:34,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-17 13:40:34,584 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-17 13:40:34,588 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-17 13:40:34,588 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:40:34,588 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:40:34,589 INFO L256 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 13:40:34,590 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:40:34,596 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-17 13:40:34,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:40:34,611 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:40:34,612 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:40:34,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467852047] [2025-03-17 13:40:34,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [467852047] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:40:34,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:40:34,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 13:40:34,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494976314] [2025-03-17 13:40:34,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:40:34,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 13:40:34,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:40:34,613 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 13:40:34,613 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:40:34,613 INFO L87 Difference]: Start difference. First operand 1696 states and 1797 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:40:37,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:40:37,058 INFO L93 Difference]: Finished difference Result 2235 states and 2387 transitions. [2025-03-17 13:40:37,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 13:40:37,058 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2025-03-17 13:40:37,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:40:37,064 INFO L225 Difference]: With dead ends: 2235 [2025-03-17 13:40:37,064 INFO L226 Difference]: Without dead ends: 2235 [2025-03-17 13:40:37,064 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:40:37,065 INFO L435 NwaCegarLoop]: 1714 mSDtfsCounter, 759 mSDsluCounter, 797 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 764 SdHoareTripleChecker+Valid, 2511 SdHoareTripleChecker+Invalid, 1173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2025-03-17 13:40:37,065 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [764 Valid, 2511 Invalid, 1173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1148 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2025-03-17 13:40:37,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2235 states. [2025-03-17 13:40:37,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2235 to 1861. [2025-03-17 13:40:37,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1861 states, 1049 states have (on average 1.9933269780743565) internal successors, (2091), 1851 states have internal predecessors, (2091), 13 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2025-03-17 13:40:37,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1861 states to 1861 states and 2115 transitions. [2025-03-17 13:40:37,090 INFO L78 Accepts]: Start accepts. Automaton has 1861 states and 2115 transitions. Word has length 4 [2025-03-17 13:40:37,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:40:37,091 INFO L471 AbstractCegarLoop]: Abstraction has 1861 states and 2115 transitions. [2025-03-17 13:40:37,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:40:37,091 INFO L276 IsEmpty]: Start isEmpty. Operand 1861 states and 2115 transitions. [2025-03-17 13:40:37,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-03-17 13:40:37,091 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:40:37,091 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-03-17 13:40:37,097 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-17 13:40:37,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:40:37,294 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr292REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 912 more)] === [2025-03-17 13:40:37,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:40:37,295 INFO L85 PathProgramCache]: Analyzing trace with hash 61726894, now seen corresponding path program 1 times [2025-03-17 13:40:37,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:40:37,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [72603799] [2025-03-17 13:40:37,295 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:40:37,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:40:37,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:40:37,298 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:40:37,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-17 13:40:37,427 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-17 13:40:37,435 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-17 13:40:37,435 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:40:37,435 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:40:37,436 INFO L256 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 13:40:37,438 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:40:37,445 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-17 13:40:37,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:40:37,464 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:40:37,464 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:40:37,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72603799] [2025-03-17 13:40:37,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72603799] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:40:37,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:40:37,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-17 13:40:37,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788756340] [2025-03-17 13:40:37,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:40:37,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 13:40:37,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:40:37,465 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 13:40:37,465 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:40:37,465 INFO L87 Difference]: Start difference. First operand 1861 states and 2115 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:40:39,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:40:39,803 INFO L93 Difference]: Finished difference Result 3335 states and 3811 transitions. [2025-03-17 13:40:39,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 13:40:39,803 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2025-03-17 13:40:39,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:40:39,813 INFO L225 Difference]: With dead ends: 3335 [2025-03-17 13:40:39,813 INFO L226 Difference]: Without dead ends: 3335 [2025-03-17 13:40:39,813 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:40:39,816 INFO L435 NwaCegarLoop]: 1239 mSDtfsCounter, 1576 mSDsluCounter, 811 mSDsCounter, 0 mSdLazyCounter, 1469 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1587 SdHoareTripleChecker+Valid, 2050 SdHoareTripleChecker+Invalid, 1478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2025-03-17 13:40:39,816 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1587 Valid, 2050 Invalid, 1478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1469 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2025-03-17 13:40:39,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3335 states. [2025-03-17 13:40:39,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3335 to 2382. [2025-03-17 13:40:39,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2382 states, 1571 states have (on average 1.9554423933800127) internal successors, (3072), 2368 states have internal predecessors, (3072), 17 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 11 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-17 13:40:39,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2382 states to 2382 states and 3104 transitions. [2025-03-17 13:40:39,860 INFO L78 Accepts]: Start accepts. Automaton has 2382 states and 3104 transitions. Word has length 4 [2025-03-17 13:40:39,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:40:39,860 INFO L471 AbstractCegarLoop]: Abstraction has 2382 states and 3104 transitions. [2025-03-17 13:40:39,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:40:39,860 INFO L276 IsEmpty]: Start isEmpty. Operand 2382 states and 3104 transitions. [2025-03-17 13:40:39,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-03-17 13:40:39,860 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:40:39,861 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-03-17 13:40:39,867 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-17 13:40:40,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:40:40,061 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr293REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 912 more)] === [2025-03-17 13:40:40,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:40:40,062 INFO L85 PathProgramCache]: Analyzing trace with hash 61726895, now seen corresponding path program 1 times [2025-03-17 13:40:40,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:40:40,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [108112699] [2025-03-17 13:40:40,062 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:40:40,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:40:40,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:40:40,064 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:40:40,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-17 13:40:40,172 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-17 13:40:40,176 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-17 13:40:40,176 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:40:40,176 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:40:40,177 INFO L256 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-17 13:40:40,178 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:40:40,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:40:40,186 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:40:40,186 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:40:40,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108112699] [2025-03-17 13:40:40,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108112699] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:40:40,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:40:40,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 13:40:40,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431721380] [2025-03-17 13:40:40,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:40:40,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 13:40:40,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:40:40,187 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 13:40:40,187 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:40:40,187 INFO L87 Difference]: Start difference. First operand 2382 states and 3104 transitions. Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:40:40,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:40:40,279 INFO L93 Difference]: Finished difference Result 4026 states and 5142 transitions. [2025-03-17 13:40:40,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 13:40:40,282 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2025-03-17 13:40:40,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:40:40,294 INFO L225 Difference]: With dead ends: 4026 [2025-03-17 13:40:40,294 INFO L226 Difference]: Without dead ends: 4026 [2025-03-17 13:40:40,295 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:40:40,296 INFO L435 NwaCegarLoop]: 1781 mSDtfsCounter, 1347 mSDsluCounter, 1775 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1358 SdHoareTripleChecker+Valid, 3556 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 13:40:40,297 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1358 Valid, 3556 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 13:40:40,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4026 states. [2025-03-17 13:40:40,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4026 to 2384. [2025-03-17 13:40:40,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2384 states, 1573 states have (on average 1.9535918626827717) internal successors, (3073), 2370 states have internal predecessors, (3073), 17 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 11 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-17 13:40:40,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2384 states to 2384 states and 3105 transitions. [2025-03-17 13:40:40,380 INFO L78 Accepts]: Start accepts. Automaton has 2384 states and 3105 transitions. Word has length 4 [2025-03-17 13:40:40,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:40:40,380 INFO L471 AbstractCegarLoop]: Abstraction has 2384 states and 3105 transitions. [2025-03-17 13:40:40,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:40:40,381 INFO L276 IsEmpty]: Start isEmpty. Operand 2384 states and 3105 transitions. [2025-03-17 13:40:40,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-03-17 13:40:40,381 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:40:40,381 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:40:40,388 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-17 13:40:40,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:40:40,582 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr908REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 912 more)] === [2025-03-17 13:40:40,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:40:40,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1790838615, now seen corresponding path program 1 times [2025-03-17 13:40:40,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:40:40,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1877461278] [2025-03-17 13:40:40,583 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:40:40,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:40:40,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:40:40,585 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:40:40,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-17 13:40:40,699 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 13:40:40,715 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 13:40:40,715 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:40:40,715 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:40:40,718 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 13:40:40,720 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:40:40,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:40:40,741 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:40:40,741 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:40:40,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877461278] [2025-03-17 13:40:40,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877461278] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:40:40,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:40:40,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 13:40:40,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623201817] [2025-03-17 13:40:40,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:40:40,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:40:40,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:40:40,743 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:40:40,743 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:40:40,743 INFO L87 Difference]: Start difference. First operand 2384 states and 3105 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:40:42,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:40:42,862 INFO L93 Difference]: Finished difference Result 2369 states and 3067 transitions. [2025-03-17 13:40:42,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 13:40:42,863 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-03-17 13:40:42,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:40:42,868 INFO L225 Difference]: With dead ends: 2369 [2025-03-17 13:40:42,868 INFO L226 Difference]: Without dead ends: 2369 [2025-03-17 13:40:42,868 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:40:42,869 INFO L435 NwaCegarLoop]: 1074 mSDtfsCounter, 1304 mSDsluCounter, 1000 mSDsCounter, 0 mSdLazyCounter, 1894 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1315 SdHoareTripleChecker+Valid, 2074 SdHoareTripleChecker+Invalid, 1926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2025-03-17 13:40:42,869 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1315 Valid, 2074 Invalid, 1926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1894 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2025-03-17 13:40:42,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2369 states. [2025-03-17 13:40:42,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2369 to 2361. [2025-03-17 13:40:42,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2361 states, 1573 states have (on average 1.9243483788938334) internal successors, (3027), 2347 states have internal predecessors, (3027), 17 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 11 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-17 13:40:42,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2361 states to 2361 states and 3059 transitions. [2025-03-17 13:40:42,898 INFO L78 Accepts]: Start accepts. Automaton has 2361 states and 3059 transitions. Word has length 9 [2025-03-17 13:40:42,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:40:42,899 INFO L471 AbstractCegarLoop]: Abstraction has 2361 states and 3059 transitions. [2025-03-17 13:40:42,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:40:42,899 INFO L276 IsEmpty]: Start isEmpty. Operand 2361 states and 3059 transitions. [2025-03-17 13:40:42,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-03-17 13:40:42,899 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:40:42,899 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:40:42,906 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-17 13:40:43,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:40:43,100 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr909REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 912 more)] === [2025-03-17 13:40:43,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:40:43,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1790838616, now seen corresponding path program 1 times [2025-03-17 13:40:43,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:40:43,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [737471864] [2025-03-17 13:40:43,101 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:40:43,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:40:43,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:40:43,103 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:40:43,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-17 13:40:43,213 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 13:40:43,229 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 13:40:43,229 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:40:43,229 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:40:43,231 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 13:40:43,233 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:40:43,238 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-17 13:40:43,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:40:43,299 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:40:43,299 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:40:43,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737471864] [2025-03-17 13:40:43,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737471864] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:40:43,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:40:43,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 13:40:43,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990057525] [2025-03-17 13:40:43,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:40:43,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:40:43,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:40:43,300 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:40:43,300 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:40:43,300 INFO L87 Difference]: Start difference. First operand 2361 states and 3059 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:40:46,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:40:46,292 INFO L93 Difference]: Finished difference Result 2877 states and 3499 transitions. [2025-03-17 13:40:46,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 13:40:46,292 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-03-17 13:40:46,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:40:46,298 INFO L225 Difference]: With dead ends: 2877 [2025-03-17 13:40:46,299 INFO L226 Difference]: Without dead ends: 2877 [2025-03-17 13:40:46,299 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:40:46,300 INFO L435 NwaCegarLoop]: 1436 mSDtfsCounter, 882 mSDsluCounter, 1663 mSDsCounter, 0 mSdLazyCounter, 2039 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 887 SdHoareTripleChecker+Valid, 3099 SdHoareTripleChecker+Invalid, 2061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 2039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2025-03-17 13:40:46,300 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [887 Valid, 3099 Invalid, 2061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 2039 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2025-03-17 13:40:46,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2877 states. [2025-03-17 13:40:46,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2877 to 2475. [2025-03-17 13:40:46,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2475 states, 1687 states have (on average 1.8761114404267931) internal successors, (3165), 2461 states have internal predecessors, (3165), 17 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 11 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-17 13:40:46,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2475 states to 2475 states and 3197 transitions. [2025-03-17 13:40:46,337 INFO L78 Accepts]: Start accepts. Automaton has 2475 states and 3197 transitions. Word has length 9 [2025-03-17 13:40:46,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:40:46,337 INFO L471 AbstractCegarLoop]: Abstraction has 2475 states and 3197 transitions. [2025-03-17 13:40:46,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:40:46,338 INFO L276 IsEmpty]: Start isEmpty. Operand 2475 states and 3197 transitions. [2025-03-17 13:40:46,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-03-17 13:40:46,339 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:40:46,339 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:40:46,346 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-17 13:40:46,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:40:46,540 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr909REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 912 more)] === [2025-03-17 13:40:46,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:40:46,540 INFO L85 PathProgramCache]: Analyzing trace with hash 2059738945, now seen corresponding path program 1 times [2025-03-17 13:40:46,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:40:46,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [726115877] [2025-03-17 13:40:46,541 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:40:46,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:40:46,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:40:46,542 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:40:46,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-17 13:40:46,652 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-17 13:40:46,695 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-17 13:40:46,695 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:40:46,695 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:40:46,704 INFO L256 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-17 13:40:46,706 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:40:46,712 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-17 13:40:46,865 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:40:46,865 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 13:40:47,153 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:40:47,153 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:40:47,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726115877] [2025-03-17 13:40:47,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726115877] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 13:40:47,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-17 13:40:47,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2025-03-17 13:40:47,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501234358] [2025-03-17 13:40:47,153 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-17 13:40:47,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 13:40:47,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:40:47,154 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 13:40:47,154 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-17 13:40:47,154 INFO L87 Difference]: Start difference. First operand 2475 states and 3197 transitions. Second operand has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:40:55,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:40:55,538 INFO L93 Difference]: Finished difference Result 3285 states and 4069 transitions. [2025-03-17 13:40:55,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 13:40:55,539 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2025-03-17 13:40:55,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:40:55,545 INFO L225 Difference]: With dead ends: 3285 [2025-03-17 13:40:55,545 INFO L226 Difference]: Without dead ends: 3285 [2025-03-17 13:40:55,545 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2025-03-17 13:40:55,546 INFO L435 NwaCegarLoop]: 1437 mSDtfsCounter, 1616 mSDsluCounter, 3401 mSDsCounter, 0 mSdLazyCounter, 3861 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1623 SdHoareTripleChecker+Valid, 4838 SdHoareTripleChecker+Invalid, 3889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 3861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2025-03-17 13:40:55,546 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1623 Valid, 4838 Invalid, 3889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 3861 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2025-03-17 13:40:55,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3285 states. [2025-03-17 13:40:55,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3285 to 2639. [2025-03-17 13:40:55,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2639 states, 1851 states have (on average 1.8352242031334414) internal successors, (3397), 2625 states have internal predecessors, (3397), 17 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 11 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-17 13:40:55,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2639 states to 2639 states and 3429 transitions. [2025-03-17 13:40:55,574 INFO L78 Accepts]: Start accepts. Automaton has 2639 states and 3429 transitions. Word has length 28 [2025-03-17 13:40:55,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:40:55,575 INFO L471 AbstractCegarLoop]: Abstraction has 2639 states and 3429 transitions. [2025-03-17 13:40:55,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:40:55,575 INFO L276 IsEmpty]: Start isEmpty. Operand 2639 states and 3429 transitions. [2025-03-17 13:40:55,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2025-03-17 13:40:55,576 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:40:55,577 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:40:55,586 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-17 13:40:55,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:40:55,781 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr856REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 912 more)] === [2025-03-17 13:40:55,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:40:55,782 INFO L85 PathProgramCache]: Analyzing trace with hash 628147997, now seen corresponding path program 1 times [2025-03-17 13:40:55,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:40:55,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1265508945] [2025-03-17 13:40:55,782 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:40:55,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:40:55,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:40:55,784 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:40:55,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-17 13:40:55,911 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 40 statements into 1 equivalence classes. [2025-03-17 13:40:55,950 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 40 of 40 statements. [2025-03-17 13:40:55,950 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:40:55,950 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:40:55,956 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 13:40:55,957 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:40:56,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:40:56,080 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:40:56,080 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:40:56,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265508945] [2025-03-17 13:40:56,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265508945] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:40:56,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:40:56,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 13:40:56,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998224183] [2025-03-17 13:40:56,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:40:56,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 13:40:56,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:40:56,081 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 13:40:56,081 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:40:56,081 INFO L87 Difference]: Start difference. First operand 2639 states and 3429 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:40:56,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:40:56,210 INFO L93 Difference]: Finished difference Result 3227 states and 4112 transitions. [2025-03-17 13:40:56,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 13:40:56,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2025-03-17 13:40:56,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:40:56,217 INFO L225 Difference]: With dead ends: 3227 [2025-03-17 13:40:56,217 INFO L226 Difference]: Without dead ends: 3227 [2025-03-17 13:40:56,218 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:40:56,218 INFO L435 NwaCegarLoop]: 1833 mSDtfsCounter, 439 mSDsluCounter, 1696 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 3529 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 13:40:56,218 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [439 Valid, 3529 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 13:40:56,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3227 states. [2025-03-17 13:40:56,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3227 to 2855. [2025-03-17 13:40:56,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2855 states, 2067 states have (on average 1.787131107885825) internal successors, (3694), 2841 states have internal predecessors, (3694), 17 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 11 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-17 13:40:56,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2855 states to 2855 states and 3726 transitions. [2025-03-17 13:40:56,247 INFO L78 Accepts]: Start accepts. Automaton has 2855 states and 3726 transitions. Word has length 40 [2025-03-17 13:40:56,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:40:56,247 INFO L471 AbstractCegarLoop]: Abstraction has 2855 states and 3726 transitions. [2025-03-17 13:40:56,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:40:56,247 INFO L276 IsEmpty]: Start isEmpty. Operand 2855 states and 3726 transitions. [2025-03-17 13:40:56,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2025-03-17 13:40:56,248 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:40:56,248 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:40:56,259 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-03-17 13:40:56,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:40:56,449 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr827REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 912 more)] === [2025-03-17 13:40:56,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:40:56,449 INFO L85 PathProgramCache]: Analyzing trace with hash -16059457, now seen corresponding path program 1 times [2025-03-17 13:40:56,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:40:56,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1711284306] [2025-03-17 13:40:56,449 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:40:56,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:40:56,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:40:56,451 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:40:56,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-17 13:40:56,571 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-03-17 13:40:56,614 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-03-17 13:40:56,615 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:40:56,615 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:40:56,621 INFO L256 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 13:40:56,623 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:40:56,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:40:56,659 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:40:56,659 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:40:56,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711284306] [2025-03-17 13:40:56,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711284306] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:40:56,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:40:56,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 13:40:56,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508649915] [2025-03-17 13:40:56,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:40:56,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:40:56,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:40:56,660 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:40:56,660 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:40:56,660 INFO L87 Difference]: Start difference. First operand 2855 states and 3726 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:40:56,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:40:56,721 INFO L93 Difference]: Finished difference Result 2400 states and 3072 transitions. [2025-03-17 13:40:56,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 13:40:56,722 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2025-03-17 13:40:56,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:40:56,727 INFO L225 Difference]: With dead ends: 2400 [2025-03-17 13:40:56,727 INFO L226 Difference]: Without dead ends: 2400 [2025-03-17 13:40:56,727 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:40:56,727 INFO L435 NwaCegarLoop]: 1702 mSDtfsCounter, 56 mSDsluCounter, 3331 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 5033 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 13:40:56,727 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 5033 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 13:40:56,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2400 states. [2025-03-17 13:40:56,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2400 to 2397. [2025-03-17 13:40:56,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2397 states, 1632 states have (on average 1.860906862745098) internal successors, (3037), 2383 states have internal predecessors, (3037), 17 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 11 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-17 13:40:56,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2397 states to 2397 states and 3069 transitions. [2025-03-17 13:40:56,747 INFO L78 Accepts]: Start accepts. Automaton has 2397 states and 3069 transitions. Word has length 43 [2025-03-17 13:40:56,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:40:56,747 INFO L471 AbstractCegarLoop]: Abstraction has 2397 states and 3069 transitions. [2025-03-17 13:40:56,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:40:56,748 INFO L276 IsEmpty]: Start isEmpty. Operand 2397 states and 3069 transitions. [2025-03-17 13:40:56,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2025-03-17 13:40:56,749 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:40:56,749 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:40:56,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-03-17 13:40:56,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:40:56,951 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr827REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 912 more)] === [2025-03-17 13:40:56,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:40:56,951 INFO L85 PathProgramCache]: Analyzing trace with hash 614822775, now seen corresponding path program 1 times [2025-03-17 13:40:56,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:40:56,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1481395302] [2025-03-17 13:40:56,951 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:40:56,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:40:56,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:40:56,953 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:40:56,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-17 13:40:57,082 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-03-17 13:40:57,140 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-03-17 13:40:57,140 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:40:57,140 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:40:57,148 INFO L256 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-17 13:40:57,150 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:40:57,159 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-17 13:40:57,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 13:40:57,447 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-03-17 13:40:57,458 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-17 13:40:57,458 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-03-17 13:40:57,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:40:57,463 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:40:57,464 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:40:57,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481395302] [2025-03-17 13:40:57,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1481395302] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:40:57,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:40:57,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 13:40:57,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077394789] [2025-03-17 13:40:57,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:40:57,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 13:40:57,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:40:57,464 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 13:40:57,465 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:40:57,465 INFO L87 Difference]: Start difference. First operand 2397 states and 3069 transitions. Second operand has 5 states, 4 states have (on average 12.75) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:40:59,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:40:59,843 INFO L93 Difference]: Finished difference Result 2313 states and 2949 transitions. [2025-03-17 13:40:59,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 13:40:59,844 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 12.75) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2025-03-17 13:40:59,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:40:59,847 INFO L225 Difference]: With dead ends: 2313 [2025-03-17 13:40:59,847 INFO L226 Difference]: Without dead ends: 2313 [2025-03-17 13:40:59,847 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2025-03-17 13:40:59,848 INFO L435 NwaCegarLoop]: 826 mSDtfsCounter, 2332 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 1832 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2343 SdHoareTripleChecker+Valid, 1388 SdHoareTripleChecker+Invalid, 1940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2025-03-17 13:40:59,848 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2343 Valid, 1388 Invalid, 1940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1832 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2025-03-17 13:40:59,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2313 states. [2025-03-17 13:40:59,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2313 to 1967. [2025-03-17 13:40:59,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1967 states, 1286 states have (on average 1.7612752721617417) internal successors, (2265), 1953 states have internal predecessors, (2265), 17 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 11 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-17 13:40:59,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1967 states to 1967 states and 2297 transitions. [2025-03-17 13:40:59,864 INFO L78 Accepts]: Start accepts. Automaton has 1967 states and 2297 transitions. Word has length 51 [2025-03-17 13:40:59,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:40:59,864 INFO L471 AbstractCegarLoop]: Abstraction has 1967 states and 2297 transitions. [2025-03-17 13:40:59,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 12.75) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:40:59,864 INFO L276 IsEmpty]: Start isEmpty. Operand 1967 states and 2297 transitions. [2025-03-17 13:40:59,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2025-03-17 13:40:59,865 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:40:59,865 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:40:59,875 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-03-17 13:41:00,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:41:00,066 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr820REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 912 more)] === [2025-03-17 13:41:00,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:41:00,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1709266289, now seen corresponding path program 1 times [2025-03-17 13:41:00,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:41:00,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [289303411] [2025-03-17 13:41:00,067 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:41:00,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:41:00,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:41:00,069 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:41:00,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-17 13:41:00,201 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-03-17 13:41:00,250 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-03-17 13:41:00,250 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:41:00,251 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:41:00,257 INFO L256 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-17 13:41:00,260 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:41:00,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-17 13:41:00,273 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-17 13:41:00,289 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-03-17 13:41:00,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:41:00,299 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:41:00,299 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:41:00,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289303411] [2025-03-17 13:41:00,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289303411] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:41:00,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:41:00,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 13:41:00,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875820217] [2025-03-17 13:41:00,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:41:00,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 13:41:00,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:41:00,300 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 13:41:00,300 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:41:00,300 INFO L87 Difference]: Start difference. First operand 1967 states and 2297 transitions. Second operand has 5 states, 4 states have (on average 14.0) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:41:02,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:41:02,605 INFO L93 Difference]: Finished difference Result 1966 states and 2295 transitions. [2025-03-17 13:41:02,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 13:41:02,606 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.0) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2025-03-17 13:41:02,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:41:02,609 INFO L225 Difference]: With dead ends: 1966 [2025-03-17 13:41:02,609 INFO L226 Difference]: Without dead ends: 1966 [2025-03-17 13:41:02,609 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-17 13:41:02,609 INFO L435 NwaCegarLoop]: 1628 mSDtfsCounter, 2 mSDsluCounter, 2554 mSDsCounter, 0 mSdLazyCounter, 2337 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 4182 SdHoareTripleChecker+Invalid, 2338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2025-03-17 13:41:02,609 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 4182 Invalid, 2338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2337 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2025-03-17 13:41:02,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1966 states. [2025-03-17 13:41:02,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1966 to 1966. [2025-03-17 13:41:02,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1966 states, 1286 states have (on average 1.7597200622083982) internal successors, (2263), 1952 states have internal predecessors, (2263), 17 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 11 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-17 13:41:02,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1966 states to 1966 states and 2295 transitions. [2025-03-17 13:41:02,623 INFO L78 Accepts]: Start accepts. Automaton has 1966 states and 2295 transitions. Word has length 56 [2025-03-17 13:41:02,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:41:02,624 INFO L471 AbstractCegarLoop]: Abstraction has 1966 states and 2295 transitions. [2025-03-17 13:41:02,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.0) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:41:02,624 INFO L276 IsEmpty]: Start isEmpty. Operand 1966 states and 2295 transitions. [2025-03-17 13:41:02,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2025-03-17 13:41:02,624 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:41:02,624 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:41:02,636 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-03-17 13:41:02,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:41:02,830 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr821REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 912 more)] === [2025-03-17 13:41:02,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:41:02,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1709266290, now seen corresponding path program 1 times [2025-03-17 13:41:02,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:41:02,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [714345943] [2025-03-17 13:41:02,831 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:41:02,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:41:02,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:41:02,833 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:41:02,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-17 13:41:02,970 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-03-17 13:41:03,020 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-03-17 13:41:03,020 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:41:03,020 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:41:03,028 INFO L256 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-17 13:41:03,033 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:41:03,042 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-17 13:41:03,056 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-03-17 13:41:03,061 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-17 13:41:03,091 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2025-03-17 13:41:03,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:41:03,101 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:41:03,101 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:41:03,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714345943] [2025-03-17 13:41:03,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714345943] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:41:03,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:41:03,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 13:41:03,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677121778] [2025-03-17 13:41:03,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:41:03,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 13:41:03,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:41:03,102 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 13:41:03,102 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:41:03,102 INFO L87 Difference]: Start difference. First operand 1966 states and 2295 transitions. Second operand has 5 states, 4 states have (on average 14.0) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:41:06,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:41:06,000 INFO L93 Difference]: Finished difference Result 1965 states and 2293 transitions. [2025-03-17 13:41:06,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 13:41:06,001 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.0) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2025-03-17 13:41:06,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:41:06,004 INFO L225 Difference]: With dead ends: 1965 [2025-03-17 13:41:06,004 INFO L226 Difference]: Without dead ends: 1965 [2025-03-17 13:41:06,004 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-17 13:41:06,004 INFO L435 NwaCegarLoop]: 1628 mSDtfsCounter, 1 mSDsluCounter, 2600 mSDsCounter, 0 mSdLazyCounter, 2288 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4228 SdHoareTripleChecker+Invalid, 2289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2025-03-17 13:41:06,004 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4228 Invalid, 2289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2288 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2025-03-17 13:41:06,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1965 states. [2025-03-17 13:41:06,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1965 to 1965. [2025-03-17 13:41:06,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1965 states, 1284 states have (on average 1.7609034267912773) internal successors, (2261), 1951 states have internal predecessors, (2261), 17 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 11 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-17 13:41:06,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1965 states to 1965 states and 2293 transitions. [2025-03-17 13:41:06,018 INFO L78 Accepts]: Start accepts. Automaton has 1965 states and 2293 transitions. Word has length 56 [2025-03-17 13:41:06,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:41:06,018 INFO L471 AbstractCegarLoop]: Abstraction has 1965 states and 2293 transitions. [2025-03-17 13:41:06,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.0) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:41:06,019 INFO L276 IsEmpty]: Start isEmpty. Operand 1965 states and 2293 transitions. [2025-03-17 13:41:06,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2025-03-17 13:41:06,019 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:41:06,019 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:41:06,034 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-03-17 13:41:06,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:41:06,220 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr816REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 912 more)] === [2025-03-17 13:41:06,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:41:06,220 INFO L85 PathProgramCache]: Analyzing trace with hash -73005330, now seen corresponding path program 1 times [2025-03-17 13:41:06,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:41:06,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [5739915] [2025-03-17 13:41:06,221 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:41:06,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:41:06,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:41:06,223 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:41:06,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-17 13:41:06,356 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes. [2025-03-17 13:41:06,404 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements. [2025-03-17 13:41:06,404 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:41:06,404 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:41:06,411 INFO L256 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-17 13:41:06,414 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:41:06,417 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-17 13:41:06,471 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-03-17 13:41:06,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:41:06,481 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:41:06,482 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:41:06,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5739915] [2025-03-17 13:41:06,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5739915] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:41:06,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:41:06,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 13:41:06,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034124078] [2025-03-17 13:41:06,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:41:06,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 13:41:06,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:41:06,484 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 13:41:06,484 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-17 13:41:06,484 INFO L87 Difference]: Start difference. First operand 1965 states and 2293 transitions. Second operand has 7 states, 5 states have (on average 12.4) internal successors, (62), 6 states have internal predecessors, (62), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 13:41:09,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:41:09,885 INFO L93 Difference]: Finished difference Result 1983 states and 2324 transitions. [2025-03-17 13:41:09,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 13:41:09,885 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 12.4) internal successors, (62), 6 states have internal predecessors, (62), 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 64 [2025-03-17 13:41:09,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:41:09,888 INFO L225 Difference]: With dead ends: 1983 [2025-03-17 13:41:09,888 INFO L226 Difference]: Without dead ends: 1983 [2025-03-17 13:41:09,888 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2025-03-17 13:41:09,889 INFO L435 NwaCegarLoop]: 1610 mSDtfsCounter, 13 mSDsluCounter, 5104 mSDsCounter, 0 mSdLazyCounter, 3048 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 6714 SdHoareTripleChecker+Invalid, 3061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 3048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2025-03-17 13:41:09,889 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 6714 Invalid, 3061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 3048 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2025-03-17 13:41:09,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1983 states. [2025-03-17 13:41:09,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1983 to 1974. [2025-03-17 13:41:09,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1974 states, 1292 states have (on average 1.758513931888545) internal successors, (2272), 1958 states have internal predecessors, (2272), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (25), 13 states have call predecessors, (25), 15 states have call successors, (25) [2025-03-17 13:41:09,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1974 states to 1974 states and 2314 transitions. [2025-03-17 13:41:09,904 INFO L78 Accepts]: Start accepts. Automaton has 1974 states and 2314 transitions. Word has length 64 [2025-03-17 13:41:09,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:41:09,905 INFO L471 AbstractCegarLoop]: Abstraction has 1974 states and 2314 transitions. [2025-03-17 13:41:09,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 12.4) internal successors, (62), 6 states have internal predecessors, (62), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 13:41:09,905 INFO L276 IsEmpty]: Start isEmpty. Operand 1974 states and 2314 transitions. [2025-03-17 13:41:09,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2025-03-17 13:41:09,905 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:41:09,905 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:41:09,915 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-03-17 13:41:10,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:41:10,106 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr817REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 912 more)] === [2025-03-17 13:41:10,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:41:10,106 INFO L85 PathProgramCache]: Analyzing trace with hash -73005329, now seen corresponding path program 1 times [2025-03-17 13:41:10,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:41:10,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1384123254] [2025-03-17 13:41:10,107 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:41:10,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:41:10,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:41:10,108 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:41:10,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-03-17 13:41:10,244 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes. [2025-03-17 13:41:10,294 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements. [2025-03-17 13:41:10,294 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:41:10,294 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:41:10,302 INFO L256 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 13:41:10,304 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:41:10,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:41:10,317 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:41:10,317 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:41:10,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384123254] [2025-03-17 13:41:10,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384123254] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:41:10,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:41:10,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 13:41:10,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516667627] [2025-03-17 13:41:10,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:41:10,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:41:10,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:41:10,318 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:41:10,318 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:41:10,318 INFO L87 Difference]: Start difference. First operand 1974 states and 2314 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 13:41:10,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:41:10,366 INFO L93 Difference]: Finished difference Result 1968 states and 2298 transitions. [2025-03-17 13:41:10,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 13:41:10,368 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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 64 [2025-03-17 13:41:10,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:41:10,371 INFO L225 Difference]: With dead ends: 1968 [2025-03-17 13:41:10,371 INFO L226 Difference]: Without dead ends: 1968 [2025-03-17 13:41:10,371 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:41:10,373 INFO L435 NwaCegarLoop]: 1627 mSDtfsCounter, 0 mSDsluCounter, 3246 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4873 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 13:41:10,373 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4873 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 13:41:10,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1968 states. [2025-03-17 13:41:10,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1968 to 1968. [2025-03-17 13:41:10,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1968 states, 1286 states have (on average 1.76049766718507) internal successors, (2264), 1954 states have internal predecessors, (2264), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (17), 11 states have call predecessors, (17), 15 states have call successors, (17) [2025-03-17 13:41:10,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1968 states to 1968 states and 2298 transitions. [2025-03-17 13:41:10,395 INFO L78 Accepts]: Start accepts. Automaton has 1968 states and 2298 transitions. Word has length 64 [2025-03-17 13:41:10,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:41:10,396 INFO L471 AbstractCegarLoop]: Abstraction has 1968 states and 2298 transitions. [2025-03-17 13:41:10,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 13:41:10,396 INFO L276 IsEmpty]: Start isEmpty. Operand 1968 states and 2298 transitions. [2025-03-17 13:41:10,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-03-17 13:41:10,396 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:41:10,396 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:41:10,406 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-03-17 13:41:10,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:41:10,598 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr816REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 912 more)] === [2025-03-17 13:41:10,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:41:10,599 INFO L85 PathProgramCache]: Analyzing trace with hash -816063849, now seen corresponding path program 1 times [2025-03-17 13:41:10,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:41:10,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1808042749] [2025-03-17 13:41:10,599 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:41:10,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:41:10,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:41:10,601 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:41:10,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-03-17 13:41:10,737 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-03-17 13:41:10,790 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-03-17 13:41:10,790 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:41:10,790 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:41:10,799 INFO L256 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 13:41:10,800 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:41:10,819 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:41:10,819 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 13:41:10,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:41:10,860 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:41:10,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808042749] [2025-03-17 13:41:10,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1808042749] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 13:41:10,860 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-17 13:41:10,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2025-03-17 13:41:10,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752683453] [2025-03-17 13:41:10,860 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-17 13:41:10,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 13:41:10,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:41:10,861 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 13:41:10,861 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-03-17 13:41:10,861 INFO L87 Difference]: Start difference. First operand 1968 states and 2298 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 13:41:10,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:41:10,967 INFO L93 Difference]: Finished difference Result 1980 states and 2316 transitions. [2025-03-17 13:41:10,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 13:41:10,968 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 65 [2025-03-17 13:41:10,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:41:10,971 INFO L225 Difference]: With dead ends: 1980 [2025-03-17 13:41:10,971 INFO L226 Difference]: Without dead ends: 1980 [2025-03-17 13:41:10,971 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2025-03-17 13:41:10,971 INFO L435 NwaCegarLoop]: 1626 mSDtfsCounter, 5 mSDsluCounter, 4864 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 6490 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 13:41:10,972 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 6490 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 13:41:10,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1980 states. [2025-03-17 13:41:10,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1980 to 1978. [2025-03-17 13:41:10,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1978 states, 1295 states have (on average 1.7598455598455598) internal successors, (2279), 1963 states have internal predecessors, (2279), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 11 states have call predecessors, (17), 15 states have call successors, (17) [2025-03-17 13:41:10,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1978 states to 1978 states and 2313 transitions. [2025-03-17 13:41:10,988 INFO L78 Accepts]: Start accepts. Automaton has 1978 states and 2313 transitions. Word has length 65 [2025-03-17 13:41:10,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:41:10,989 INFO L471 AbstractCegarLoop]: Abstraction has 1978 states and 2313 transitions. [2025-03-17 13:41:10,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 13:41:10,989 INFO L276 IsEmpty]: Start isEmpty. Operand 1978 states and 2313 transitions. [2025-03-17 13:41:10,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-03-17 13:41:10,989 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:41:10,989 INFO L218 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:41:11,000 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-03-17 13:41:11,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:41:11,190 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr816REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 912 more)] === [2025-03-17 13:41:11,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:41:11,190 INFO L85 PathProgramCache]: Analyzing trace with hash 609364270, now seen corresponding path program 2 times [2025-03-17 13:41:11,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:41:11,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1350959728] [2025-03-17 13:41:11,191 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 13:41:11,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:41:11,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:41:11,193 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:41:11,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-03-17 13:41:11,336 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 68 statements into 2 equivalence classes. [2025-03-17 13:41:33,061 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 68 of 68 statements. [2025-03-17 13:41:33,062 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 13:41:33,062 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:41:33,077 INFO L256 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-03-17 13:41:33,080 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:41:33,133 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-17 13:41:33,133 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-03-17 13:41:33,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-17 13:41:33,259 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-17 13:41:33,259 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2025-03-17 13:41:33,281 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2025-03-17 13:41:33,292 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-17 13:41:33,292 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 13:41:33,347 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2025-03-17 13:41:33,347 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2025-03-17 13:41:33,388 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:41:33,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350959728] [2025-03-17 13:41:33,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350959728] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 13:41:33,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1990423265] [2025-03-17 13:41:33,388 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 13:41:33,388 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-03-17 13:41:33,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2025-03-17 13:41:33,390 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-03-17 13:41:33,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2025-03-17 13:41:33,590 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 68 statements into 2 equivalence classes. [2025-03-17 13:41:34,252 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 68 of 68 statements. [2025-03-17 13:41:34,253 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 13:41:34,253 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:41:34,273 INFO L256 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-17 13:41:34,274 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:41:34,370 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:41:34,370 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 13:41:34,550 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:41:34,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1990423265] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 13:41:34,550 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 13:41:34,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 24 [2025-03-17 13:41:34,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017110237] [2025-03-17 13:41:34,550 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 13:41:34,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-17 13:41:34,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:41:34,551 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-17 13:41:34,551 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=552, Unknown=7, NotChecked=0, Total=650 [2025-03-17 13:41:34,551 INFO L87 Difference]: Start difference. First operand 1978 states and 2313 transitions. Second operand has 24 states, 23 states have (on average 5.695652173913044) internal successors, (131), 23 states have internal predecessors, (131), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-17 13:41:42,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:41:42,373 INFO L93 Difference]: Finished difference Result 1994 states and 2337 transitions. [2025-03-17 13:41:42,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-03-17 13:41:42,374 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.695652173913044) internal successors, (131), 23 states have internal predecessors, (131), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 68 [2025-03-17 13:41:42,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:41:42,376 INFO L225 Difference]: With dead ends: 1994 [2025-03-17 13:41:42,376 INFO L226 Difference]: Without dead ends: 1990 [2025-03-17 13:41:42,377 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 486 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=416, Invalid=2331, Unknown=9, NotChecked=0, Total=2756 [2025-03-17 13:41:42,377 INFO L435 NwaCegarLoop]: 1045 mSDtfsCounter, 1214 mSDsluCounter, 11946 mSDsCounter, 0 mSdLazyCounter, 8825 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1228 SdHoareTripleChecker+Valid, 12991 SdHoareTripleChecker+Invalid, 8873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 8825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2025-03-17 13:41:42,377 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1228 Valid, 12991 Invalid, 8873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 8825 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2025-03-17 13:41:42,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1990 states. [2025-03-17 13:41:42,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1990 to 1986. [2025-03-17 13:41:42,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1986 states, 1304 states have (on average 1.7553680981595092) internal successors, (2289), 1971 states have internal predecessors, (2289), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 11 states have call predecessors, (17), 15 states have call successors, (17) [2025-03-17 13:41:42,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1986 states to 1986 states and 2323 transitions. [2025-03-17 13:41:42,394 INFO L78 Accepts]: Start accepts. Automaton has 1986 states and 2323 transitions. Word has length 68 [2025-03-17 13:41:42,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:41:42,394 INFO L471 AbstractCegarLoop]: Abstraction has 1986 states and 2323 transitions. [2025-03-17 13:41:42,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.695652173913044) internal successors, (131), 23 states have internal predecessors, (131), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-17 13:41:42,394 INFO L276 IsEmpty]: Start isEmpty. Operand 1986 states and 2323 transitions. [2025-03-17 13:41:42,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2025-03-17 13:41:42,397 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:41:42,397 INFO L218 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:41:42,405 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2025-03-17 13:41:42,622 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-03-17 13:41:42,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:41:42,798 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr817REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 912 more)] === [2025-03-17 13:41:42,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:41:42,798 INFO L85 PathProgramCache]: Analyzing trace with hash -442072945, now seen corresponding path program 1 times [2025-03-17 13:41:42,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:41:42,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [843737331] [2025-03-17 13:41:42,798 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:41:42,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:41:42,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:41:42,800 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:41:42,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-03-17 13:41:42,964 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 74 statements into 1 equivalence classes. [2025-03-17 13:41:43,034 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 74 of 74 statements. [2025-03-17 13:41:43,035 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:41:43,035 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:41:43,044 INFO L256 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-17 13:41:43,046 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:41:43,134 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:41:43,134 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 13:41:43,492 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:41:43,492 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:41:43,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843737331] [2025-03-17 13:41:43,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [843737331] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 13:41:43,492 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-17 13:41:43,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2025-03-17 13:41:43,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562589119] [2025-03-17 13:41:43,492 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-17 13:41:43,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-03-17 13:41:43,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:41:43,493 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-03-17 13:41:43,493 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2025-03-17 13:41:43,493 INFO L87 Difference]: Start difference. First operand 1986 states and 2323 transitions. Second operand has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 26 states have internal predecessors, (85), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 13:41:44,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:41:44,603 INFO L93 Difference]: Finished difference Result 2010 states and 2362 transitions. [2025-03-17 13:41:44,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-03-17 13:41:44,603 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 26 states have internal predecessors, (85), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 74 [2025-03-17 13:41:44,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:41:44,606 INFO L225 Difference]: With dead ends: 2010 [2025-03-17 13:41:44,606 INFO L226 Difference]: Without dead ends: 2004 [2025-03-17 13:41:44,607 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=728, Invalid=1434, Unknown=0, NotChecked=0, Total=2162 [2025-03-17 13:41:44,607 INFO L435 NwaCegarLoop]: 1626 mSDtfsCounter, 17 mSDsluCounter, 17841 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 19467 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-17 13:41:44,607 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 19467 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 616 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-17 13:41:44,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2004 states. [2025-03-17 13:41:44,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2004 to 2004. [2025-03-17 13:41:44,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2004 states, 1322 states have (on average 1.7488653555219364) internal successors, (2312), 1989 states have internal predecessors, (2312), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 11 states have call predecessors, (17), 15 states have call successors, (17) [2025-03-17 13:41:44,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2004 states to 2004 states and 2346 transitions. [2025-03-17 13:41:44,623 INFO L78 Accepts]: Start accepts. Automaton has 2004 states and 2346 transitions. Word has length 74 [2025-03-17 13:41:44,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:41:44,623 INFO L471 AbstractCegarLoop]: Abstraction has 2004 states and 2346 transitions. [2025-03-17 13:41:44,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.269230769230769) internal successors, (85), 26 states have internal predecessors, (85), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 13:41:44,624 INFO L276 IsEmpty]: Start isEmpty. Operand 2004 states and 2346 transitions. [2025-03-17 13:41:44,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2025-03-17 13:41:44,624 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:41:44,624 INFO L218 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:41:44,636 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-03-17 13:41:44,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:41:44,825 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr817REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 912 more)] === [2025-03-17 13:41:44,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:41:44,826 INFO L85 PathProgramCache]: Analyzing trace with hash -937420977, now seen corresponding path program 2 times [2025-03-17 13:41:44,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:41:44,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1133671129] [2025-03-17 13:41:44,826 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 13:41:44,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:41:44,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:41:44,828 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:41:44,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-03-17 13:41:45,000 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 86 statements into 2 equivalence classes. [2025-03-17 13:41:54,409 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 86 of 86 statements. [2025-03-17 13:41:54,409 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 13:41:54,409 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:41:54,429 INFO L256 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 65 conjuncts are in the unsatisfiable core [2025-03-17 13:41:54,434 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:41:54,486 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-17 13:41:54,494 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-17 13:41:54,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-03-17 13:41:54,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-03-17 13:41:54,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-17 13:41:54,579 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2025-03-17 13:41:54,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2025-03-17 13:41:54,898 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-17 13:41:54,898 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2025-03-17 13:41:54,907 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2025-03-17 13:41:54,939 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2025-03-17 13:41:54,944 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2025-03-17 13:41:54,959 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2025-03-17 13:41:54,959 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 13:41:55,277 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_1537 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_1537) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd (_ bv20 32) .cse0)))) (forall ((v_ArrVal_1537 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1538 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv20 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_1537) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_1538) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2025-03-17 13:41:55,280 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:41:55,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133671129] [2025-03-17 13:41:55,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133671129] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 13:41:55,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2014424383] [2025-03-17 13:41:55,280 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 13:41:55,280 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-03-17 13:41:55,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2025-03-17 13:41:55,282 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-03-17 13:41:55,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2025-03-17 13:41:55,528 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 86 statements into 2 equivalence classes. [2025-03-17 13:41:56,351 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 86 of 86 statements. [2025-03-17 13:41:56,351 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 13:41:56,351 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:41:56,382 INFO L256 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 41 conjuncts are in the unsatisfiable core [2025-03-17 13:41:56,384 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:41:57,047 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:41:57,047 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 13:41:58,732 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:41:58,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2014424383] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 13:41:58,733 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 13:41:58,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 26, 26] total 58 [2025-03-17 13:41:58,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548267596] [2025-03-17 13:41:58,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 13:41:58,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2025-03-17 13:41:58,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:41:58,734 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2025-03-17 13:41:58,735 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=699, Invalid=2844, Unknown=1, NotChecked=116, Total=3660 [2025-03-17 13:41:58,735 INFO L87 Difference]: Start difference. First operand 2004 states and 2346 transitions. Second operand has 58 states, 57 states have (on average 2.9298245614035086) internal successors, (167), 58 states have internal predecessors, (167), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)