./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test4-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test4-3.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 87dd09ebbd7004650762949ef44f5f810b259dfe76e04f61193dc727167eb435 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 00:27:30,344 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 00:27:30,397 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-01-10 00:27:30,402 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 00:27:30,406 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 00:27:30,427 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 00:27:30,429 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 00:27:30,429 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 00:27:30,429 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 00:27:30,430 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 00:27:30,430 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 00:27:30,430 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 00:27:30,430 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 00:27:30,430 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 00:27:30,431 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 00:27:30,431 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 00:27:30,431 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-10 00:27:30,431 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 00:27:30,431 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-10 00:27:30,431 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 00:27:30,432 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-01-10 00:27:30,432 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-01-10 00:27:30,432 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-01-10 00:27:30,432 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 00:27:30,432 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-01-10 00:27:30,432 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 00:27:30,432 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-10 00:27:30,432 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 00:27:30,432 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 00:27:30,432 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 00:27:30,432 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 00:27:30,433 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 00:27:30,433 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 00:27:30,433 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 00:27:30,433 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 00:27:30,433 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 00:27:30,433 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 00:27:30,433 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 00:27:30,433 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 00:27:30,433 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 00:27:30,433 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 00:27:30,433 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-10 00:27:30,433 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-10 00:27:30,433 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 00:27:30,434 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 00:27:30,434 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 00:27:30,434 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 00:27:30,434 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-jdk21/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 -> 87dd09ebbd7004650762949ef44f5f810b259dfe76e04f61193dc727167eb435 [2025-01-10 00:27:30,655 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 00:27:30,663 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 00:27:30,664 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 00:27:30,666 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 00:27:30,666 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 00:27:30,668 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test4-3.i [2025-01-10 00:27:31,800 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/dcf031ddb/c7a40384fa344d4989571038782e62ec/FLAG0f76567e6 [2025-01-10 00:27:32,109 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 00:27:32,110 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test4-3.i [2025-01-10 00:27:32,127 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/dcf031ddb/c7a40384fa344d4989571038782e62ec/FLAG0f76567e6 [2025-01-10 00:27:32,361 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/dcf031ddb/c7a40384fa344d4989571038782e62ec [2025-01-10 00:27:32,362 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 00:27:32,363 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 00:27:32,364 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 00:27:32,364 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 00:27:32,367 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 00:27:32,367 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:27:32" (1/1) ... [2025-01-10 00:27:32,368 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@113de17c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:27:32, skipping insertion in model container [2025-01-10 00:27:32,368 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:27:32" (1/1) ... [2025-01-10 00:27:32,401 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 00:27:32,648 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:27:32,682 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:27:32,684 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:27:32,687 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:27:32,691 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:27:32,728 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:27:32,730 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:27:32,731 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:27:32,734 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:27:32,743 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:27:32,744 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:27:32,746 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:27:32,747 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:27:32,747 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:27:32,748 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:27:32,750 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:27:32,751 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:27:32,751 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:27:32,752 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:27:32,754 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:27:32,761 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 00:27:32,771 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) [2025-01-10 00:27:32,771 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@12814e96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:27:32, skipping insertion in model container [2025-01-10 00:27:32,771 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 00:27:32,773 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-01-10 00:27:32,777 INFO L158 Benchmark]: Toolchain (without parser) took 410.34ms. Allocated memory is still 142.6MB. Free memory was 104.5MB in the beginning and 83.1MB in the end (delta: 21.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-01-10 00:27:32,777 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 201.3MB. Free memory is still 128.9MB. There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 00:27:32,777 INFO L158 Benchmark]: CACSL2BoogieTranslator took 408.82ms. Allocated memory is still 142.6MB. Free memory was 104.5MB in the beginning and 83.1MB in the end (delta: 21.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-01-10 00:27:32,778 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 201.3MB. Free memory is still 128.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 408.82ms. Allocated memory is still 142.6MB. Free memory was 104.5MB in the beginning and 83.1MB in the end (delta: 21.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 757]: 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-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test4-3.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 87dd09ebbd7004650762949ef44f5f810b259dfe76e04f61193dc727167eb435 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 00:27:34,353 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 00:27:34,426 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-01-10 00:27:34,431 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 00:27:34,431 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 00:27:34,456 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 00:27:34,457 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 00:27:34,458 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 00:27:34,458 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 00:27:34,458 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 00:27:34,458 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 00:27:34,458 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 00:27:34,458 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 00:27:34,458 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 00:27:34,458 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 00:27:34,459 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 00:27:34,459 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-10 00:27:34,459 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 00:27:34,459 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-10 00:27:34,459 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 00:27:34,459 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-01-10 00:27:34,459 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-01-10 00:27:34,459 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-01-10 00:27:34,459 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 00:27:34,459 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-01-10 00:27:34,460 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-01-10 00:27:34,460 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-01-10 00:27:34,460 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 00:27:34,460 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-10 00:27:34,460 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 00:27:34,460 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 00:27:34,460 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 00:27:34,460 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 00:27:34,460 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 00:27:34,460 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 00:27:34,460 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 00:27:34,460 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 00:27:34,461 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 00:27:34,461 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 00:27:34,461 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 00:27:34,461 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 00:27:34,461 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 00:27:34,461 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 00:27:34,461 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-01-10 00:27:34,461 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-01-10 00:27:34,461 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 00:27:34,461 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 00:27:34,461 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 00:27:34,462 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 00:27:34,462 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-jdk21/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 -> 87dd09ebbd7004650762949ef44f5f810b259dfe76e04f61193dc727167eb435 [2025-01-10 00:27:34,676 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 00:27:34,683 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 00:27:34,684 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 00:27:34,686 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 00:27:34,686 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 00:27:34,687 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test4-3.i [2025-01-10 00:27:35,816 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5cc0af24b/5e5ca2867b4944eb922c7c7ba6d0e005/FLAGb1a56d1fb [2025-01-10 00:27:36,071 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 00:27:36,072 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test4-3.i [2025-01-10 00:27:36,092 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5cc0af24b/5e5ca2867b4944eb922c7c7ba6d0e005/FLAGb1a56d1fb [2025-01-10 00:27:36,104 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5cc0af24b/5e5ca2867b4944eb922c7c7ba6d0e005 [2025-01-10 00:27:36,107 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 00:27:36,109 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 00:27:36,110 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 00:27:36,110 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 00:27:36,113 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 00:27:36,114 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:27:36" (1/1) ... [2025-01-10 00:27:36,114 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@794f1319 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:27:36, skipping insertion in model container [2025-01-10 00:27:36,115 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:27:36" (1/1) ... [2025-01-10 00:27:36,151 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 00:27:36,446 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:27:36,480 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:27:36,484 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:27:36,487 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:27:36,493 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:27:36,526 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:27:36,527 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:27:36,529 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:27:36,534 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:27:36,544 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:27:36,546 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:27:36,547 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:27:36,548 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:27:36,549 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:27:36,549 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:27:36,552 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:27:36,553 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:27:36,553 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:27:36,554 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:27:36,558 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:27:36,563 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 00:27:36,582 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-01-10 00:27:36,591 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 00:27:36,617 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:27:36,632 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:27:36,637 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:27:36,642 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:27:36,647 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:27:36,670 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:27:36,672 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:27:36,673 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:27:36,677 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:27:36,685 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:27:36,687 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:27:36,688 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:27:36,688 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:27:36,688 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:27:36,689 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:27:36,691 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:27:36,691 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:27:36,691 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:27:36,692 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:27:36,696 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 00:27:36,699 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 00:27:36,704 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 00:27:36,787 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 00:27:36,817 INFO L204 MainTranslator]: Completed translation [2025-01-10 00:27:36,818 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:27:36 WrapperNode [2025-01-10 00:27:36,819 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 00:27:36,820 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 00:27:36,820 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 00:27:36,820 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 00:27:36,824 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:27:36" (1/1) ... [2025-01-10 00:27:36,853 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:27:36" (1/1) ... [2025-01-10 00:27:36,905 INFO L138 Inliner]: procedures = 179, calls = 425, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1401 [2025-01-10 00:27:36,905 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 00:27:36,906 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 00:27:36,906 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 00:27:36,906 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 00:27:36,912 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:27:36" (1/1) ... [2025-01-10 00:27:36,912 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:27:36" (1/1) ... [2025-01-10 00:27:36,926 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:27:36" (1/1) ... [2025-01-10 00:27:37,012 INFO L175 MemorySlicer]: Split 403 memory accesses to 2 slices as follows [2, 401]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 98 writes are split as follows [0, 98]. [2025-01-10 00:27:37,012 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:27:36" (1/1) ... [2025-01-10 00:27:37,012 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:27:36" (1/1) ... [2025-01-10 00:27:37,053 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:27:36" (1/1) ... [2025-01-10 00:27:37,057 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:27:36" (1/1) ... [2025-01-10 00:27:37,062 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:27:36" (1/1) ... [2025-01-10 00:27:37,065 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:27:36" (1/1) ... [2025-01-10 00:27:37,068 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:27:36" (1/1) ... [2025-01-10 00:27:37,075 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 00:27:37,076 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 00:27:37,076 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 00:27:37,076 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 00:27:37,076 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:27:36" (1/1) ... [2025-01-10 00:27:37,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 00:27:37,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:27:37,102 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-10 00:27:37,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-10 00:27:37,121 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2025-01-10 00:27:37,121 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2025-01-10 00:27:37,121 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-01-10 00:27:37,121 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-01-10 00:27:37,122 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-01-10 00:27:37,122 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-01-10 00:27:37,122 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-01-10 00:27:37,122 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-01-10 00:27:37,122 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-01-10 00:27:37,122 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 00:27:37,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-01-10 00:27:37,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-01-10 00:27:37,123 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-01-10 00:27:37,123 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-01-10 00:27:37,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-10 00:27:37,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-01-10 00:27:37,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-01-10 00:27:37,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-01-10 00:27:37,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-01-10 00:27:37,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 00:27:37,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 00:27:37,315 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 00:27:37,316 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 00:27:37,318 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2025-01-10 00:27:37,342 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2025-01-10 00:27:40,710 INFO L? ?]: Removed 1737 outVars from TransFormulas that were not future-live. [2025-01-10 00:27:40,710 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 00:27:40,747 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 00:27:40,751 INFO L312 CfgBuilder]: Removed 36 assume(true) statements. [2025-01-10 00:27:40,751 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:27:40 BoogieIcfgContainer [2025-01-10 00:27:40,751 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 00:27:40,752 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-10 00:27:40,754 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-10 00:27:40,758 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-10 00:27:40,758 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:27:36" (1/3) ... [2025-01-10 00:27:40,759 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@636526e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:27:40, skipping insertion in model container [2025-01-10 00:27:40,760 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:27:36" (2/3) ... [2025-01-10 00:27:40,760 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@636526e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:27:40, skipping insertion in model container [2025-01-10 00:27:40,760 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:27:40" (3/3) ... [2025-01-10 00:27:40,761 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_SAX_nondet_test4-3.i [2025-01-10 00:27:40,771 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-10 00:27:40,773 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_SAX_nondet_test4-3.i that has 3 procedures, 1608 locations, 1 initial locations, 45 loop locations, and 831 error locations. [2025-01-10 00:27:40,818 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 00:27:40,829 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;@22493d05, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 00:27:40,830 INFO L334 AbstractCegarLoop]: Starting to check reachability of 831 error locations. [2025-01-10 00:27:40,836 INFO L276 IsEmpty]: Start isEmpty. Operand has 1603 states, 770 states have (on average 2.264935064935065) internal successors, (1744), 1595 states have internal predecessors, (1744), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-01-10 00:27:40,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-01-10 00:27:40,840 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:27:40,840 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-01-10 00:27:40,841 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr830ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-01-10 00:27:40,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:27:40,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1482059, now seen corresponding path program 1 times [2025-01-10 00:27:40,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:27:40,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1617808708] [2025-01-10 00:27:40,853 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:27:40,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:27:40,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:27:40,856 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:27:40,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-10 00:27:41,002 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-01-10 00:27:41,005 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-01-10 00:27:41,005 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:27:41,005 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:27:41,007 INFO L256 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-01-10 00:27:41,010 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:27:41,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:27:41,030 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:27:41,031 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:27:41,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617808708] [2025-01-10 00:27:41,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617808708] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:27:41,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:27:41,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 00:27:41,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760665927] [2025-01-10 00:27:41,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:27:41,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 00:27:41,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:27:41,051 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 00:27:41,051 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 00:27:41,054 INFO L87 Difference]: Start difference. First operand has 1603 states, 770 states have (on average 2.264935064935065) internal successors, (1744), 1595 states have internal predecessors, (1744), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) 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) [2025-01-10 00:27:42,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:27:42,682 INFO L93 Difference]: Finished difference Result 1961 states and 2056 transitions. [2025-01-10 00:27:42,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 00:27:42,688 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 [2025-01-10 00:27:42,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:27:42,699 INFO L225 Difference]: With dead ends: 1961 [2025-01-10 00:27:42,699 INFO L226 Difference]: Without dead ends: 1958 [2025-01-10 00:27:42,700 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 [2025-01-10 00:27:42,702 INFO L435 NwaCegarLoop]: 1649 mSDtfsCounter, 394 mSDsluCounter, 838 mSDsCounter, 0 mSdLazyCounter, 1015 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 2487 SdHoareTripleChecker+Invalid, 1015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-01-10 00:27:42,703 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [394 Valid, 2487 Invalid, 1015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1015 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-01-10 00:27:42,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1958 states. [2025-01-10 00:27:42,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1958 to 1599. [2025-01-10 00:27:42,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1599 states, 777 states have (on average 2.1531531531531534) internal successors, (1673), 1591 states have internal predecessors, (1673), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-01-10 00:27:42,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1599 states to 1599 states and 1685 transitions. [2025-01-10 00:27:42,773 INFO L78 Accepts]: Start accepts. Automaton has 1599 states and 1685 transitions. Word has length 4 [2025-01-10 00:27:42,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:27:42,774 INFO L471 AbstractCegarLoop]: Abstraction has 1599 states and 1685 transitions. [2025-01-10 00:27:42,774 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) [2025-01-10 00:27:42,774 INFO L276 IsEmpty]: Start isEmpty. Operand 1599 states and 1685 transitions. [2025-01-10 00:27:42,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-01-10 00:27:42,774 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:27:42,774 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-01-10 00:27:42,781 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-10 00:27:42,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:27:42,975 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr621REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-01-10 00:27:42,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:27:42,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1423800342, now seen corresponding path program 1 times [2025-01-10 00:27:42,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:27:42,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1579474748] [2025-01-10 00:27:42,976 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:27:42,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:27:42,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:27:42,978 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:27:42,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-01-10 00:27:43,078 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-01-10 00:27:43,081 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-01-10 00:27:43,082 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:27:43,082 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:27:43,083 INFO L256 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-10 00:27:43,084 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:27:43,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:27:43,115 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:27:43,115 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:27:43,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579474748] [2025-01-10 00:27:43,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579474748] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:27:43,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:27:43,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 00:27:43,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334794203] [2025-01-10 00:27:43,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:27:43,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 00:27:43,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:27:43,117 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 00:27:43,117 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 00:27:43,117 INFO L87 Difference]: Start difference. First operand 1599 states and 1685 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:27:43,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:27:43,821 INFO L93 Difference]: Finished difference Result 2305 states and 2420 transitions. [2025-01-10 00:27:43,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 00:27:43,822 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2025-01-10 00:27:43,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:27:43,828 INFO L225 Difference]: With dead ends: 2305 [2025-01-10 00:27:43,828 INFO L226 Difference]: Without dead ends: 2305 [2025-01-10 00:27:43,828 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 00:27:43,828 INFO L435 NwaCegarLoop]: 1652 mSDtfsCounter, 748 mSDsluCounter, 2955 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 751 SdHoareTripleChecker+Valid, 4607 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-01-10 00:27:43,829 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [751 Valid, 4607 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-01-10 00:27:43,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2305 states. [2025-01-10 00:27:43,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2305 to 1946. [2025-01-10 00:27:43,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1946 states, 1124 states have (on average 2.1370106761565837) internal successors, (2402), 1935 states have internal predecessors, (2402), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-01-10 00:27:43,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1946 states to 1946 states and 2420 transitions. [2025-01-10 00:27:43,857 INFO L78 Accepts]: Start accepts. Automaton has 1946 states and 2420 transitions. Word has length 6 [2025-01-10 00:27:43,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:27:43,857 INFO L471 AbstractCegarLoop]: Abstraction has 1946 states and 2420 transitions. [2025-01-10 00:27:43,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:27:43,857 INFO L276 IsEmpty]: Start isEmpty. Operand 1946 states and 2420 transitions. [2025-01-10 00:27:43,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-01-10 00:27:43,858 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:27:43,858 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-01-10 00:27:43,863 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-10 00:27:44,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:27:44,063 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-01-10 00:27:44,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:27:44,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1422072554, now seen corresponding path program 1 times [2025-01-10 00:27:44,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:27:44,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1024485572] [2025-01-10 00:27:44,063 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:27:44,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:27:44,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:27:44,066 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:27:44,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-01-10 00:27:44,184 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-01-10 00:27:44,187 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-01-10 00:27:44,188 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:27:44,188 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:27:44,189 INFO L256 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-10 00:27:44,190 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:27:44,209 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 [2025-01-10 00:27:44,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:27:44,219 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:27:44,219 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:27:44,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1024485572] [2025-01-10 00:27:44,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1024485572] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:27:44,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:27:44,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 00:27:44,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47386108] [2025-01-10 00:27:44,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:27:44,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 00:27:44,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:27:44,220 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 00:27:44,221 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 00:27:44,221 INFO L87 Difference]: Start difference. First operand 1946 states and 2420 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:27:45,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:27:45,687 INFO L93 Difference]: Finished difference Result 1852 states and 2276 transitions. [2025-01-10 00:27:45,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 00:27:45,688 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2025-01-10 00:27:45,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:27:45,697 INFO L225 Difference]: With dead ends: 1852 [2025-01-10 00:27:45,697 INFO L226 Difference]: Without dead ends: 1852 [2025-01-10 00:27:45,698 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 00:27:45,699 INFO L435 NwaCegarLoop]: 949 mSDtfsCounter, 1024 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 935 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1030 SdHoareTripleChecker+Valid, 1149 SdHoareTripleChecker+Invalid, 1037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-01-10 00:27:45,700 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1030 Valid, 1149 Invalid, 1037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 935 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-01-10 00:27:45,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1852 states. [2025-01-10 00:27:45,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1852 to 1852. [2025-01-10 00:27:45,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1852 states, 1124 states have (on average 2.008896797153025) internal successors, (2258), 1841 states have internal predecessors, (2258), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-01-10 00:27:45,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1852 states to 1852 states and 2276 transitions. [2025-01-10 00:27:45,729 INFO L78 Accepts]: Start accepts. Automaton has 1852 states and 2276 transitions. Word has length 6 [2025-01-10 00:27:45,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:27:45,730 INFO L471 AbstractCegarLoop]: Abstraction has 1852 states and 2276 transitions. [2025-01-10 00:27:45,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:27:45,730 INFO L276 IsEmpty]: Start isEmpty. Operand 1852 states and 2276 transitions. [2025-01-10 00:27:45,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-01-10 00:27:45,730 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:27:45,730 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-01-10 00:27:45,736 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-01-10 00:27:45,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:27:45,935 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-01-10 00:27:45,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:27:45,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1422072555, now seen corresponding path program 1 times [2025-01-10 00:27:45,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:27:45,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [887773010] [2025-01-10 00:27:45,936 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:27:45,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:27:45,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:27:45,937 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:27:45,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-01-10 00:27:46,032 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-01-10 00:27:46,037 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-01-10 00:27:46,037 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:27:46,037 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:27:46,038 INFO L256 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-10 00:27:46,041 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:27:46,048 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 [2025-01-10 00:27:46,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:27:46,066 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:27:46,066 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:27:46,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887773010] [2025-01-10 00:27:46,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [887773010] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:27:46,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:27:46,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 00:27:46,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978929008] [2025-01-10 00:27:46,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:27:46,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 00:27:46,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:27:46,070 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 00:27:46,070 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 00:27:46,070 INFO L87 Difference]: Start difference. First operand 1852 states and 2276 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:27:47,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:27:47,875 INFO L93 Difference]: Finished difference Result 2291 states and 2822 transitions. [2025-01-10 00:27:47,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 00:27:47,876 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2025-01-10 00:27:47,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:27:47,881 INFO L225 Difference]: With dead ends: 2291 [2025-01-10 00:27:47,881 INFO L226 Difference]: Without dead ends: 2291 [2025-01-10 00:27:47,881 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 00:27:47,881 INFO L435 NwaCegarLoop]: 1401 mSDtfsCounter, 519 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 974 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 2040 SdHoareTripleChecker+Invalid, 999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-01-10 00:27:47,882 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [519 Valid, 2040 Invalid, 999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 974 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-01-10 00:27:47,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2291 states. [2025-01-10 00:27:47,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2291 to 2137. [2025-01-10 00:27:47,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2137 states, 1419 states have (on average 1.959830866807611) internal successors, (2781), 2126 states have internal predecessors, (2781), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-01-10 00:27:47,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2137 states to 2137 states and 2799 transitions. [2025-01-10 00:27:47,907 INFO L78 Accepts]: Start accepts. Automaton has 2137 states and 2799 transitions. Word has length 6 [2025-01-10 00:27:47,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:27:47,907 INFO L471 AbstractCegarLoop]: Abstraction has 2137 states and 2799 transitions. [2025-01-10 00:27:47,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:27:47,907 INFO L276 IsEmpty]: Start isEmpty. Operand 2137 states and 2799 transitions. [2025-01-10 00:27:47,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-01-10 00:27:47,908 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:27:47,908 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:27:47,914 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-01-10 00:27:48,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:27:48,108 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr627REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-01-10 00:27:48,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:27:48,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1188176161, now seen corresponding path program 1 times [2025-01-10 00:27:48,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:27:48,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1842032602] [2025-01-10 00:27:48,109 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:27:48,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:27:48,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:27:48,112 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:27:48,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-01-10 00:27:48,207 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-01-10 00:27:48,210 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-01-10 00:27:48,210 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:27:48,210 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:27:48,212 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-10 00:27:48,213 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:27:48,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:27:48,238 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:27:48,238 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:27:48,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842032602] [2025-01-10 00:27:48,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842032602] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:27:48,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:27:48,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 00:27:48,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757636520] [2025-01-10 00:27:48,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:27:48,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 00:27:48,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:27:48,238 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 00:27:48,239 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 00:27:48,239 INFO L87 Difference]: Start difference. First operand 2137 states and 2799 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:27:48,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:27:48,359 INFO L93 Difference]: Finished difference Result 2393 states and 2927 transitions. [2025-01-10 00:27:48,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 00:27:48,359 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2025-01-10 00:27:48,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:27:48,364 INFO L225 Difference]: With dead ends: 2393 [2025-01-10 00:27:48,364 INFO L226 Difference]: Without dead ends: 2393 [2025-01-10 00:27:48,365 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 00:27:48,365 INFO L435 NwaCegarLoop]: 1619 mSDtfsCounter, 501 mSDsluCounter, 1483 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 3102 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-10 00:27:48,365 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [501 Valid, 3102 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-10 00:27:48,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2393 states. [2025-01-10 00:27:48,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2393 to 1998. [2025-01-10 00:27:48,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1998 states, 1280 states have (on average 1.97109375) internal successors, (2523), 1987 states have internal predecessors, (2523), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-01-10 00:27:48,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1998 states to 1998 states and 2541 transitions. [2025-01-10 00:27:48,400 INFO L78 Accepts]: Start accepts. Automaton has 1998 states and 2541 transitions. Word has length 7 [2025-01-10 00:27:48,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:27:48,400 INFO L471 AbstractCegarLoop]: Abstraction has 1998 states and 2541 transitions. [2025-01-10 00:27:48,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:27:48,400 INFO L276 IsEmpty]: Start isEmpty. Operand 1998 states and 2541 transitions. [2025-01-10 00:27:48,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-01-10 00:27:48,401 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:27:48,401 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:27:48,407 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-01-10 00:27:48,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:27:48,601 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr629REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-01-10 00:27:48,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:27:48,602 INFO L85 PathProgramCache]: Analyzing trace with hash 2138058242, now seen corresponding path program 1 times [2025-01-10 00:27:48,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:27:48,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1881815097] [2025-01-10 00:27:48,602 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:27:48,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:27:48,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:27:48,604 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:27:48,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-01-10 00:27:48,696 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-10 00:27:48,702 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-10 00:27:48,702 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:27:48,702 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:27:48,703 INFO L256 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-10 00:27:48,704 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:27:48,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:27:48,747 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:27:48,747 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:27:48,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881815097] [2025-01-10 00:27:48,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881815097] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:27:48,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:27:48,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 00:27:48,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818167625] [2025-01-10 00:27:48,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:27:48,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 00:27:48,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:27:48,748 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 00:27:48,748 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 00:27:48,748 INFO L87 Difference]: Start difference. First operand 1998 states and 2541 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:27:49,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:27:49,316 INFO L93 Difference]: Finished difference Result 2393 states and 2926 transitions. [2025-01-10 00:27:49,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 00:27:49,316 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-01-10 00:27:49,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:27:49,322 INFO L225 Difference]: With dead ends: 2393 [2025-01-10 00:27:49,322 INFO L226 Difference]: Without dead ends: 2389 [2025-01-10 00:27:49,322 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-01-10 00:27:49,323 INFO L435 NwaCegarLoop]: 1619 mSDtfsCounter, 503 mSDsluCounter, 2886 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 503 SdHoareTripleChecker+Valid, 4505 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-01-10 00:27:49,324 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [503 Valid, 4505 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-01-10 00:27:49,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2389 states. [2025-01-10 00:27:49,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2389 to 1994. [2025-01-10 00:27:49,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1994 states, 1276 states have (on average 1.9733542319749215) internal successors, (2518), 1983 states have internal predecessors, (2518), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-01-10 00:27:49,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1994 states to 1994 states and 2536 transitions. [2025-01-10 00:27:49,351 INFO L78 Accepts]: Start accepts. Automaton has 1994 states and 2536 transitions. Word has length 10 [2025-01-10 00:27:49,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:27:49,351 INFO L471 AbstractCegarLoop]: Abstraction has 1994 states and 2536 transitions. [2025-01-10 00:27:49,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:27:49,351 INFO L276 IsEmpty]: Start isEmpty. Operand 1994 states and 2536 transitions. [2025-01-10 00:27:49,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-01-10 00:27:49,351 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:27:49,351 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:27:49,359 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-01-10 00:27:49,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:27:49,552 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-01-10 00:27:49,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:27:49,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1127332468, now seen corresponding path program 1 times [2025-01-10 00:27:49,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:27:49,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1839651258] [2025-01-10 00:27:49,553 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:27:49,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:27:49,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:27:49,555 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:27:49,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-01-10 00:27:49,656 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-01-10 00:27:49,671 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-01-10 00:27:49,671 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:27:49,671 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:27:49,674 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-10 00:27:49,676 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:27:49,690 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-01-10 00:27:49,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:27:49,717 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:27:49,717 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:27:49,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839651258] [2025-01-10 00:27:49,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839651258] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:27:49,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:27:49,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 00:27:49,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050832324] [2025-01-10 00:27:49,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:27:49,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 00:27:49,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:27:49,717 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 00:27:49,717 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 00:27:49,717 INFO L87 Difference]: Start difference. First operand 1994 states and 2536 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2025-01-10 00:27:51,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:27:51,540 INFO L93 Difference]: Finished difference Result 1979 states and 2498 transitions. [2025-01-10 00:27:51,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 00:27:51,541 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2025-01-10 00:27:51,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:27:51,546 INFO L225 Difference]: With dead ends: 1979 [2025-01-10 00:27:51,546 INFO L226 Difference]: Without dead ends: 1979 [2025-01-10 00:27:51,546 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-01-10 00:27:51,547 INFO L435 NwaCegarLoop]: 924 mSDtfsCounter, 1074 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 1718 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1080 SdHoareTripleChecker+Valid, 1777 SdHoareTripleChecker+Invalid, 1750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-01-10 00:27:51,547 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1080 Valid, 1777 Invalid, 1750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1718 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-01-10 00:27:51,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1979 states. [2025-01-10 00:27:51,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1979 to 1971. [2025-01-10 00:27:51,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1971 states, 1276 states have (on average 1.9373040752351096) internal successors, (2472), 1960 states have internal predecessors, (2472), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-01-10 00:27:51,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1971 states to 1971 states and 2490 transitions. [2025-01-10 00:27:51,568 INFO L78 Accepts]: Start accepts. Automaton has 1971 states and 2490 transitions. Word has length 12 [2025-01-10 00:27:51,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:27:51,568 INFO L471 AbstractCegarLoop]: Abstraction has 1971 states and 2490 transitions. [2025-01-10 00:27:51,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2025-01-10 00:27:51,568 INFO L276 IsEmpty]: Start isEmpty. Operand 1971 states and 2490 transitions. [2025-01-10 00:27:51,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-01-10 00:27:51,568 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:27:51,568 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:27:51,576 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-01-10 00:27:51,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:27:51,770 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-01-10 00:27:51,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:27:51,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1127332469, now seen corresponding path program 1 times [2025-01-10 00:27:51,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:27:51,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1337566457] [2025-01-10 00:27:51,770 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:27:51,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:27:51,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:27:51,772 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:27:51,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-01-10 00:27:51,862 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-01-10 00:27:51,877 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-01-10 00:27:51,877 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:27:51,877 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:27:51,879 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-10 00:27:51,881 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:27:51,887 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 [2025-01-10 00:27:51,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:27:51,934 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:27:51,934 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:27:51,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337566457] [2025-01-10 00:27:51,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337566457] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:27:51,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:27:51,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 00:27:51,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101629315] [2025-01-10 00:27:51,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:27:51,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 00:27:51,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:27:51,935 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 00:27:51,936 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 00:27:51,936 INFO L87 Difference]: Start difference. First operand 1971 states and 2490 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2025-01-10 00:27:54,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:27:54,497 INFO L93 Difference]: Finished difference Result 2253 states and 2663 transitions. [2025-01-10 00:27:54,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 00:27:54,497 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2025-01-10 00:27:54,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:27:54,502 INFO L225 Difference]: With dead ends: 2253 [2025-01-10 00:27:54,502 INFO L226 Difference]: Without dead ends: 2253 [2025-01-10 00:27:54,502 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-01-10 00:27:54,502 INFO L435 NwaCegarLoop]: 1598 mSDtfsCounter, 642 mSDsluCounter, 1544 mSDsCounter, 0 mSdLazyCounter, 1908 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 642 SdHoareTripleChecker+Valid, 3142 SdHoareTripleChecker+Invalid, 1930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-01-10 00:27:54,503 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [642 Valid, 3142 Invalid, 1930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1908 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-01-10 00:27:54,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2253 states. [2025-01-10 00:27:54,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2253 to 2085. [2025-01-10 00:27:54,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2085 states, 1390 states have (on average 1.8776978417266188) internal successors, (2610), 2074 states have internal predecessors, (2610), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-01-10 00:27:54,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2085 states to 2085 states and 2628 transitions. [2025-01-10 00:27:54,534 INFO L78 Accepts]: Start accepts. Automaton has 2085 states and 2628 transitions. Word has length 12 [2025-01-10 00:27:54,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:27:54,534 INFO L471 AbstractCegarLoop]: Abstraction has 2085 states and 2628 transitions. [2025-01-10 00:27:54,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2025-01-10 00:27:54,534 INFO L276 IsEmpty]: Start isEmpty. Operand 2085 states and 2628 transitions. [2025-01-10 00:27:54,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-01-10 00:27:54,535 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:27:54,535 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:27:54,543 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-01-10 00:27:54,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:27:54,736 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-01-10 00:27:54,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:27:54,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1499393125, now seen corresponding path program 1 times [2025-01-10 00:27:54,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:27:54,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1278389628] [2025-01-10 00:27:54,737 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:27:54,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:27:54,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:27:54,739 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:27:54,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-01-10 00:27:54,842 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-01-10 00:27:54,886 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-01-10 00:27:54,886 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:27:54,886 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:27:54,896 INFO L256 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-10 00:27:54,898 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:27:54,907 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 [2025-01-10 00:27:55,061 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:27:55,062 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 00:27:55,367 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:27:55,367 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:27:55,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278389628] [2025-01-10 00:27:55,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278389628] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 00:27:55,367 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-10 00:27:55,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2025-01-10 00:27:55,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257954978] [2025-01-10 00:27:55,367 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-10 00:27:55,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-01-10 00:27:55,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:27:55,368 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-01-10 00:27:55,368 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-01-10 00:27:55,368 INFO L87 Difference]: Start difference. First operand 2085 states and 2628 transitions. Second operand has 8 states, 7 states have (on average 8.428571428571429) internal successors, (59), 8 states have internal predecessors, (59), 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) [2025-01-10 00:28:03,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:28:03,378 INFO L93 Difference]: Finished difference Result 2640 states and 3193 transitions. [2025-01-10 00:28:03,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-10 00:28:03,379 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.428571428571429) internal successors, (59), 8 states have internal predecessors, (59), 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 31 [2025-01-10 00:28:03,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:28:03,391 INFO L225 Difference]: With dead ends: 2640 [2025-01-10 00:28:03,391 INFO L226 Difference]: Without dead ends: 2640 [2025-01-10 00:28:03,391 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2025-01-10 00:28:03,392 INFO L435 NwaCegarLoop]: 1639 mSDtfsCounter, 1247 mSDsluCounter, 4069 mSDsCounter, 0 mSdLazyCounter, 4715 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1249 SdHoareTripleChecker+Valid, 5708 SdHoareTripleChecker+Invalid, 4743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 4715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2025-01-10 00:28:03,392 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1249 Valid, 5708 Invalid, 4743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 4715 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2025-01-10 00:28:03,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2640 states. [2025-01-10 00:28:03,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2640 to 2249. [2025-01-10 00:28:03,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2249 states, 1554 states have (on average 1.8288288288288288) internal successors, (2842), 2238 states have internal predecessors, (2842), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-01-10 00:28:03,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2249 states to 2249 states and 2860 transitions. [2025-01-10 00:28:03,422 INFO L78 Accepts]: Start accepts. Automaton has 2249 states and 2860 transitions. Word has length 31 [2025-01-10 00:28:03,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:28:03,422 INFO L471 AbstractCegarLoop]: Abstraction has 2249 states and 2860 transitions. [2025-01-10 00:28:03,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.428571428571429) internal successors, (59), 8 states have internal predecessors, (59), 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) [2025-01-10 00:28:03,422 INFO L276 IsEmpty]: Start isEmpty. Operand 2249 states and 2860 transitions. [2025-01-10 00:28:03,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2025-01-10 00:28:03,425 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:28:03,425 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] [2025-01-10 00:28:03,438 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-01-10 00:28:03,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:28:03,629 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-01-10 00:28:03,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:28:03,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1165508395, now seen corresponding path program 1 times [2025-01-10 00:28:03,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:28:03,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1062677543] [2025-01-10 00:28:03,630 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:28:03,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:28:03,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:28:03,632 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:28:03,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-01-10 00:28:03,738 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 46 statements into 1 equivalence classes. [2025-01-10 00:28:03,780 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 46 of 46 statements. [2025-01-10 00:28:03,780 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:28:03,780 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:28:03,786 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-10 00:28:03,788 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:28:03,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:28:03,815 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:28:03,815 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:28:03,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062677543] [2025-01-10 00:28:03,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062677543] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:28:03,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:28:03,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 00:28:03,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722346268] [2025-01-10 00:28:03,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:28:03,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 00:28:03,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:28:03,816 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 00:28:03,816 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 00:28:03,816 INFO L87 Difference]: Start difference. First operand 2249 states and 2860 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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) [2025-01-10 00:28:03,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:28:03,877 INFO L93 Difference]: Finished difference Result 1938 states and 2424 transitions. [2025-01-10 00:28:03,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 00:28:03,880 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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 46 [2025-01-10 00:28:03,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:28:03,884 INFO L225 Difference]: With dead ends: 1938 [2025-01-10 00:28:03,884 INFO L226 Difference]: Without dead ends: 1938 [2025-01-10 00:28:03,885 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-01-10 00:28:03,885 INFO L435 NwaCegarLoop]: 1467 mSDtfsCounter, 56 mSDsluCounter, 2861 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 4328 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 [2025-01-10 00:28:03,885 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 4328 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-10 00:28:03,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1938 states. [2025-01-10 00:28:03,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1938 to 1936. [2025-01-10 00:28:03,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1936 states, 1264 states have (on average 1.9018987341772151) internal successors, (2404), 1925 states have internal predecessors, (2404), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-01-10 00:28:03,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1936 states to 1936 states and 2422 transitions. [2025-01-10 00:28:03,902 INFO L78 Accepts]: Start accepts. Automaton has 1936 states and 2422 transitions. Word has length 46 [2025-01-10 00:28:03,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:28:03,902 INFO L471 AbstractCegarLoop]: Abstraction has 1936 states and 2422 transitions. [2025-01-10 00:28:03,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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) [2025-01-10 00:28:03,903 INFO L276 IsEmpty]: Start isEmpty. Operand 1936 states and 2422 transitions. [2025-01-10 00:28:03,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2025-01-10 00:28:03,904 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:28:03,904 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] [2025-01-10 00:28:03,914 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-01-10 00:28:04,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:28:04,105 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-01-10 00:28:04,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:28:04,105 INFO L85 PathProgramCache]: Analyzing trace with hash -954835575, now seen corresponding path program 1 times [2025-01-10 00:28:04,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:28:04,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1179268365] [2025-01-10 00:28:04,106 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:28:04,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:28:04,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:28:04,107 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:28:04,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-01-10 00:28:04,224 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 54 statements into 1 equivalence classes. [2025-01-10 00:28:04,284 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 54 of 54 statements. [2025-01-10 00:28:04,284 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:28:04,284 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:28:04,292 INFO L256 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-10 00:28:04,294 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:28:04,305 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 [2025-01-10 00:28:04,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-10 00:28:04,636 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 [2025-01-10 00:28:04,648 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-01-10 00:28:04,648 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 [2025-01-10 00:28:04,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:28:04,655 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:28:04,655 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:28:04,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179268365] [2025-01-10 00:28:04,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179268365] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:28:04,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:28:04,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 00:28:04,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135604425] [2025-01-10 00:28:04,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:28:04,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 00:28:04,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:28:04,657 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 00:28:04,657 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-01-10 00:28:04,657 INFO L87 Difference]: Start difference. First operand 1936 states and 2422 transitions. Second operand has 5 states, 4 states have (on average 13.5) internal successors, (54), 5 states have internal predecessors, (54), 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) [2025-01-10 00:28:06,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:28:06,653 INFO L93 Difference]: Finished difference Result 1852 states and 2297 transitions. [2025-01-10 00:28:06,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 00:28:06,653 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 13.5) internal successors, (54), 5 states have internal predecessors, (54), 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 54 [2025-01-10 00:28:06,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:28:06,657 INFO L225 Difference]: With dead ends: 1852 [2025-01-10 00:28:06,658 INFO L226 Difference]: Without dead ends: 1852 [2025-01-10 00:28:06,658 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2025-01-10 00:28:06,658 INFO L435 NwaCegarLoop]: 727 mSDtfsCounter, 1853 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 1560 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1859 SdHoareTripleChecker+Valid, 1190 SdHoareTripleChecker+Invalid, 1663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-01-10 00:28:06,658 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1859 Valid, 1190 Invalid, 1663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1560 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-01-10 00:28:06,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1852 states. [2025-01-10 00:28:06,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1852 to 1676. [2025-01-10 00:28:06,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1676 states, 1088 states have (on average 1.7922794117647058) internal successors, (1950), 1665 states have internal predecessors, (1950), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-01-10 00:28:06,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1676 states to 1676 states and 1968 transitions. [2025-01-10 00:28:06,673 INFO L78 Accepts]: Start accepts. Automaton has 1676 states and 1968 transitions. Word has length 54 [2025-01-10 00:28:06,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:28:06,673 INFO L471 AbstractCegarLoop]: Abstraction has 1676 states and 1968 transitions. [2025-01-10 00:28:06,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 13.5) internal successors, (54), 5 states have internal predecessors, (54), 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) [2025-01-10 00:28:06,673 INFO L276 IsEmpty]: Start isEmpty. Operand 1676 states and 1968 transitions. [2025-01-10 00:28:06,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2025-01-10 00:28:06,674 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:28:06,674 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] [2025-01-10 00:28:06,684 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-01-10 00:28:06,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:28:06,875 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr66REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-01-10 00:28:06,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:28:06,875 INFO L85 PathProgramCache]: Analyzing trace with hash -531199352, now seen corresponding path program 1 times [2025-01-10 00:28:06,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:28:06,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [187545726] [2025-01-10 00:28:06,876 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:28:06,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:28:06,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:28:06,877 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:28:06,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-01-10 00:28:07,002 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 59 statements into 1 equivalence classes. [2025-01-10 00:28:07,056 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 59 of 59 statements. [2025-01-10 00:28:07,057 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:28:07,057 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:28:07,065 INFO L256 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-10 00:28:07,069 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:28:07,076 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 [2025-01-10 00:28:07,087 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-01-10 00:28:07,105 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 [2025-01-10 00:28:07,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:28:07,112 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:28:07,112 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:28:07,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187545726] [2025-01-10 00:28:07,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187545726] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:28:07,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:28:07,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 00:28:07,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74697525] [2025-01-10 00:28:07,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:28:07,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 00:28:07,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:28:07,113 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 00:28:07,113 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-10 00:28:07,114 INFO L87 Difference]: Start difference. First operand 1676 states and 1968 transitions. Second operand has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 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) [2025-01-10 00:28:09,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:28:09,043 INFO L93 Difference]: Finished difference Result 1675 states and 1966 transitions. [2025-01-10 00:28:09,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 00:28:09,043 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 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 59 [2025-01-10 00:28:09,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:28:09,047 INFO L225 Difference]: With dead ends: 1675 [2025-01-10 00:28:09,047 INFO L226 Difference]: Without dead ends: 1675 [2025-01-10 00:28:09,047 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-01-10 00:28:09,047 INFO L435 NwaCegarLoop]: 1393 mSDtfsCounter, 2 mSDsluCounter, 2097 mSDsCounter, 0 mSdLazyCounter, 2089 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3490 SdHoareTripleChecker+Invalid, 2090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-01-10 00:28:09,048 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3490 Invalid, 2090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2089 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-01-10 00:28:09,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1675 states. [2025-01-10 00:28:09,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1675 to 1675. [2025-01-10 00:28:09,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1675 states, 1088 states have (on average 1.7904411764705883) internal successors, (1948), 1664 states have internal predecessors, (1948), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-01-10 00:28:09,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1675 states to 1675 states and 1966 transitions. [2025-01-10 00:28:09,061 INFO L78 Accepts]: Start accepts. Automaton has 1675 states and 1966 transitions. Word has length 59 [2025-01-10 00:28:09,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:28:09,061 INFO L471 AbstractCegarLoop]: Abstraction has 1675 states and 1966 transitions. [2025-01-10 00:28:09,061 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 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) [2025-01-10 00:28:09,061 INFO L276 IsEmpty]: Start isEmpty. Operand 1675 states and 1966 transitions. [2025-01-10 00:28:09,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2025-01-10 00:28:09,061 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:28:09,062 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] [2025-01-10 00:28:09,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-01-10 00:28:09,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:28:09,266 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr67REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-01-10 00:28:09,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:28:09,266 INFO L85 PathProgramCache]: Analyzing trace with hash -531199351, now seen corresponding path program 1 times [2025-01-10 00:28:09,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:28:09,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1822528991] [2025-01-10 00:28:09,267 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:28:09,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:28:09,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:28:09,268 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:28:09,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-01-10 00:28:09,385 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 59 statements into 1 equivalence classes. [2025-01-10 00:28:09,434 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 59 of 59 statements. [2025-01-10 00:28:09,434 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:28:09,434 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:28:09,440 INFO L256 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-01-10 00:28:09,442 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:28:09,448 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 [2025-01-10 00:28:09,461 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 [2025-01-10 00:28:09,467 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 [2025-01-10 00:28:09,492 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 [2025-01-10 00:28:09,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:28:09,505 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:28:09,505 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:28:09,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822528991] [2025-01-10 00:28:09,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1822528991] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:28:09,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:28:09,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 00:28:09,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628910159] [2025-01-10 00:28:09,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:28:09,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 00:28:09,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:28:09,506 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 00:28:09,506 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-10 00:28:09,506 INFO L87 Difference]: Start difference. First operand 1675 states and 1966 transitions. Second operand has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 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) [2025-01-10 00:28:12,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:28:12,143 INFO L93 Difference]: Finished difference Result 1674 states and 1964 transitions. [2025-01-10 00:28:12,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 00:28:12,143 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 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 59 [2025-01-10 00:28:12,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:28:12,146 INFO L225 Difference]: With dead ends: 1674 [2025-01-10 00:28:12,146 INFO L226 Difference]: Without dead ends: 1674 [2025-01-10 00:28:12,146 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-01-10 00:28:12,148 INFO L435 NwaCegarLoop]: 1393 mSDtfsCounter, 1 mSDsluCounter, 2140 mSDsCounter, 0 mSdLazyCounter, 2043 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3533 SdHoareTripleChecker+Invalid, 2044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2025-01-10 00:28:12,148 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 3533 Invalid, 2044 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2043 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2025-01-10 00:28:12,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1674 states. [2025-01-10 00:28:12,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1674 to 1674. [2025-01-10 00:28:12,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1674 states, 1086 states have (on average 1.7918968692449355) internal successors, (1946), 1663 states have internal predecessors, (1946), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-01-10 00:28:12,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1674 states to 1674 states and 1964 transitions. [2025-01-10 00:28:12,163 INFO L78 Accepts]: Start accepts. Automaton has 1674 states and 1964 transitions. Word has length 59 [2025-01-10 00:28:12,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:28:12,164 INFO L471 AbstractCegarLoop]: Abstraction has 1674 states and 1964 transitions. [2025-01-10 00:28:12,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 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) [2025-01-10 00:28:12,164 INFO L276 IsEmpty]: Start isEmpty. Operand 1674 states and 1964 transitions. [2025-01-10 00:28:12,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-01-10 00:28:12,164 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:28:12,164 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:28:12,174 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-01-10 00:28:12,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:28:12,365 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-01-10 00:28:12,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:28:12,366 INFO L85 PathProgramCache]: Analyzing trace with hash 336478223, now seen corresponding path program 1 times [2025-01-10 00:28:12,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:28:12,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [974773872] [2025-01-10 00:28:12,366 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:28:12,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:28:12,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:28:12,368 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:28:12,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-01-10 00:28:12,481 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-01-10 00:28:12,530 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-01-10 00:28:12,530 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:28:12,530 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:28:12,538 INFO L256 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-01-10 00:28:12,540 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:28:12,548 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 [2025-01-10 00:28:12,606 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 [2025-01-10 00:28:12,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:28:12,616 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:28:12,616 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:28:12,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974773872] [2025-01-10 00:28:12,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974773872] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:28:12,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:28:12,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-10 00:28:12,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064718893] [2025-01-10 00:28:12,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:28:12,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-10 00:28:12,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:28:12,617 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-10 00:28:12,617 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-01-10 00:28:12,618 INFO L87 Difference]: Start difference. First operand 1674 states and 1964 transitions. Second operand has 7 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 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) [2025-01-10 00:28:15,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:28:15,266 INFO L93 Difference]: Finished difference Result 1692 states and 1994 transitions. [2025-01-10 00:28:15,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-10 00:28:15,267 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 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 67 [2025-01-10 00:28:15,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:28:15,270 INFO L225 Difference]: With dead ends: 1692 [2025-01-10 00:28:15,270 INFO L226 Difference]: Without dead ends: 1692 [2025-01-10 00:28:15,271 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2025-01-10 00:28:15,271 INFO L435 NwaCegarLoop]: 1382 mSDtfsCounter, 6 mSDsluCounter, 4262 mSDsCounter, 0 mSdLazyCounter, 2721 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 5644 SdHoareTripleChecker+Invalid, 2728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 2721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2025-01-10 00:28:15,271 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 5644 Invalid, 2728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 2721 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2025-01-10 00:28:15,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1692 states. [2025-01-10 00:28:15,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1692 to 1683. [2025-01-10 00:28:15,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1683 states, 1094 states have (on average 1.7888482632541134) internal successors, (1957), 1670 states have internal predecessors, (1957), 9 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (18), 11 states have call predecessors, (18), 9 states have call successors, (18) [2025-01-10 00:28:15,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1683 states to 1683 states and 1984 transitions. [2025-01-10 00:28:15,286 INFO L78 Accepts]: Start accepts. Automaton has 1683 states and 1984 transitions. Word has length 67 [2025-01-10 00:28:15,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:28:15,286 INFO L471 AbstractCegarLoop]: Abstraction has 1683 states and 1984 transitions. [2025-01-10 00:28:15,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 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) [2025-01-10 00:28:15,287 INFO L276 IsEmpty]: Start isEmpty. Operand 1683 states and 1984 transitions. [2025-01-10 00:28:15,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-01-10 00:28:15,287 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:28:15,287 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:28:15,299 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-01-10 00:28:15,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:28:15,488 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-01-10 00:28:15,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:28:15,488 INFO L85 PathProgramCache]: Analyzing trace with hash 336478224, now seen corresponding path program 1 times [2025-01-10 00:28:15,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:28:15,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1621511845] [2025-01-10 00:28:15,488 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:28:15,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:28:15,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:28:15,490 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:28:15,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-01-10 00:28:15,605 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-01-10 00:28:15,664 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-01-10 00:28:15,664 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:28:15,664 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:28:15,671 INFO L256 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-10 00:28:15,673 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:28:15,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:28:15,690 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:28:15,691 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:28:15,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621511845] [2025-01-10 00:28:15,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621511845] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:28:15,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:28:15,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 00:28:15,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294834633] [2025-01-10 00:28:15,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:28:15,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 00:28:15,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:28:15,692 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 00:28:15,692 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 00:28:15,692 INFO L87 Difference]: Start difference. First operand 1683 states and 1984 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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) [2025-01-10 00:28:15,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:28:15,727 INFO L93 Difference]: Finished difference Result 1677 states and 1970 transitions. [2025-01-10 00:28:15,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 00:28:15,728 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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 67 [2025-01-10 00:28:15,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:28:15,731 INFO L225 Difference]: With dead ends: 1677 [2025-01-10 00:28:15,731 INFO L226 Difference]: Without dead ends: 1677 [2025-01-10 00:28:15,731 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 00:28:15,733 INFO L435 NwaCegarLoop]: 1392 mSDtfsCounter, 0 mSDsluCounter, 2776 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4168 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 [2025-01-10 00:28:15,733 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4168 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-10 00:28:15,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1677 states. [2025-01-10 00:28:15,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1677 to 1677. [2025-01-10 00:28:15,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1677 states, 1088 states have (on average 1.791360294117647) internal successors, (1949), 1666 states have internal predecessors, (1949), 9 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2025-01-10 00:28:15,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1677 states to 1677 states and 1970 transitions. [2025-01-10 00:28:15,756 INFO L78 Accepts]: Start accepts. Automaton has 1677 states and 1970 transitions. Word has length 67 [2025-01-10 00:28:15,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:28:15,757 INFO L471 AbstractCegarLoop]: Abstraction has 1677 states and 1970 transitions. [2025-01-10 00:28:15,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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) [2025-01-10 00:28:15,757 INFO L276 IsEmpty]: Start isEmpty. Operand 1677 states and 1970 transitions. [2025-01-10 00:28:15,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-01-10 00:28:15,758 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:28:15,758 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:28:15,769 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-01-10 00:28:15,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:28:15,962 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-01-10 00:28:15,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:28:15,962 INFO L85 PathProgramCache]: Analyzing trace with hash -2083538464, now seen corresponding path program 1 times [2025-01-10 00:28:15,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:28:15,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2005453973] [2025-01-10 00:28:15,963 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:28:15,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:28:15,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:28:15,964 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:28:15,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-01-10 00:28:16,096 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-01-10 00:28:16,158 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-01-10 00:28:16,158 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:28:16,158 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:28:16,167 INFO L256 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-10 00:28:16,168 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:28:16,181 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:28:16,181 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 00:28:16,227 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:28:16,228 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:28:16,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005453973] [2025-01-10 00:28:16,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005453973] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 00:28:16,228 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-10 00:28:16,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2025-01-10 00:28:16,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359267420] [2025-01-10 00:28:16,228 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-10 00:28:16,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-01-10 00:28:16,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:28:16,228 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-01-10 00:28:16,228 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-01-10 00:28:16,229 INFO L87 Difference]: Start difference. First operand 1677 states and 1970 transitions. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 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) [2025-01-10 00:28:16,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:28:16,340 INFO L93 Difference]: Finished difference Result 1689 states and 1989 transitions. [2025-01-10 00:28:16,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-10 00:28:16,340 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 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 68 [2025-01-10 00:28:16,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:28:16,343 INFO L225 Difference]: With dead ends: 1689 [2025-01-10 00:28:16,343 INFO L226 Difference]: Without dead ends: 1689 [2025-01-10 00:28:16,343 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2025-01-10 00:28:16,343 INFO L435 NwaCegarLoop]: 1391 mSDtfsCounter, 5 mSDsluCounter, 5541 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 6932 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-10 00:28:16,343 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 6932 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-10 00:28:16,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1689 states. [2025-01-10 00:28:16,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1689 to 1687. [2025-01-10 00:28:16,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1687 states, 1097 states have (on average 1.7903372835004558) internal successors, (1964), 1675 states have internal predecessors, (1964), 9 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2025-01-10 00:28:16,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 1985 transitions. [2025-01-10 00:28:16,357 INFO L78 Accepts]: Start accepts. Automaton has 1687 states and 1985 transitions. Word has length 68 [2025-01-10 00:28:16,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:28:16,357 INFO L471 AbstractCegarLoop]: Abstraction has 1687 states and 1985 transitions. [2025-01-10 00:28:16,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 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) [2025-01-10 00:28:16,357 INFO L276 IsEmpty]: Start isEmpty. Operand 1687 states and 1985 transitions. [2025-01-10 00:28:16,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-01-10 00:28:16,357 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:28:16,358 INFO L218 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:28:16,367 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-01-10 00:28:16,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:28:16,558 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-01-10 00:28:16,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:28:16,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1249465265, now seen corresponding path program 2 times [2025-01-10 00:28:16,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:28:16,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1606940039] [2025-01-10 00:28:16,559 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 00:28:16,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:28:16,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:28:16,561 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:28:16,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-01-10 00:28:16,691 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 71 statements into 2 equivalence classes. [2025-01-10 00:28:27,464 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 71 of 71 statements. [2025-01-10 00:28:27,464 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 00:28:27,464 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:28:27,478 INFO L256 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-01-10 00:28:27,480 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:28:27,557 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-01-10 00:28:27,557 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 [2025-01-10 00:28:27,574 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 [2025-01-10 00:28:27,677 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-01-10 00:28:27,677 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 [2025-01-10 00:28:27,702 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 [2025-01-10 00:28:27,716 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-10 00:28:27,716 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 00:28:27,776 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2025-01-10 00:28:27,776 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 [2025-01-10 00:28:27,782 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_847 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_847) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)) |c_ULTIMATE.start_main_#t~mem32#1.base|)) is different from false [2025-01-10 00:28:27,784 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:28:27,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606940039] [2025-01-10 00:28:27,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606940039] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 00:28:27,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1626816849] [2025-01-10 00:28:27,784 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 00:28:27,784 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-01-10 00:28:27,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 [2025-01-10 00:28:27,786 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-01-10 00:28:27,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2025-01-10 00:28:27,975 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 71 statements into 2 equivalence classes. [2025-01-10 00:28:28,512 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 71 of 71 statements. [2025-01-10 00:28:28,512 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 00:28:28,512 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:28:28,531 INFO L256 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-10 00:28:28,533 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:28:28,639 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:28:28,639 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 00:28:28,839 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:28:28,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1626816849] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 00:28:28,839 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 00:28:28,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 24 [2025-01-10 00:28:28,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897417064] [2025-01-10 00:28:28,839 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 00:28:28,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-01-10 00:28:28,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:28:28,840 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-01-10 00:28:28,840 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=513, Unknown=1, NotChecked=46, Total=650 [2025-01-10 00:28:28,841 INFO L87 Difference]: Start difference. First operand 1687 states and 1985 transitions. Second operand has 24 states, 23 states have (on average 5.826086956521739) internal successors, (134), 23 states have internal predecessors, (134), 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) [2025-01-10 00:28:37,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:28:37,095 INFO L93 Difference]: Finished difference Result 1703 states and 2008 transitions. [2025-01-10 00:28:37,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-01-10 00:28:37,095 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.826086956521739) internal successors, (134), 23 states have internal predecessors, (134), 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 71 [2025-01-10 00:28:37,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:28:37,098 INFO L225 Difference]: With dead ends: 1703 [2025-01-10 00:28:37,098 INFO L226 Difference]: Without dead ends: 1697 [2025-01-10 00:28:37,099 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=392, Invalid=2161, Unknown=1, NotChecked=98, Total=2652 [2025-01-10 00:28:37,099 INFO L435 NwaCegarLoop]: 902 mSDtfsCounter, 974 mSDsluCounter, 12743 mSDsCounter, 0 mSdLazyCounter, 9324 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 981 SdHoareTripleChecker+Valid, 13645 SdHoareTripleChecker+Invalid, 9352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 9324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2025-01-10 00:28:37,100 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [981 Valid, 13645 Invalid, 9352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 9324 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2025-01-10 00:28:37,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1697 states. [2025-01-10 00:28:37,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1697 to 1695. [2025-01-10 00:28:37,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1695 states, 1106 states have (on average 1.7839059674502713) internal successors, (1973), 1683 states have internal predecessors, (1973), 9 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2025-01-10 00:28:37,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1695 states to 1695 states and 1994 transitions. [2025-01-10 00:28:37,113 INFO L78 Accepts]: Start accepts. Automaton has 1695 states and 1994 transitions. Word has length 71 [2025-01-10 00:28:37,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:28:37,114 INFO L471 AbstractCegarLoop]: Abstraction has 1695 states and 1994 transitions. [2025-01-10 00:28:37,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.826086956521739) internal successors, (134), 23 states have internal predecessors, (134), 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) [2025-01-10 00:28:37,114 INFO L276 IsEmpty]: Start isEmpty. Operand 1695 states and 1994 transitions. [2025-01-10 00:28:37,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2025-01-10 00:28:37,116 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:28:37,117 INFO L218 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:28:37,125 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2025-01-10 00:28:37,343 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-01-10 00:28:37,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:28:37,518 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-01-10 00:28:37,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:28:37,518 INFO L85 PathProgramCache]: Analyzing trace with hash 861016752, now seen corresponding path program 1 times [2025-01-10 00:28:37,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:28:37,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [969415421] [2025-01-10 00:28:37,519 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:28:37,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:28:37,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:28:37,520 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:28:37,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-01-10 00:28:37,683 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 77 statements into 1 equivalence classes. [2025-01-10 00:28:37,750 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 77 of 77 statements. [2025-01-10 00:28:37,751 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:28:37,751 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:28:37,760 INFO L256 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-10 00:28:37,762 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:28:37,843 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:28:37,844 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 00:28:38,160 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:28:38,160 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:28:38,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969415421] [2025-01-10 00:28:38,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [969415421] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 00:28:38,160 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-10 00:28:38,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2025-01-10 00:28:38,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834849233] [2025-01-10 00:28:38,160 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-10 00:28:38,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-01-10 00:28:38,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:28:38,161 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-01-10 00:28:38,161 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2025-01-10 00:28:38,161 INFO L87 Difference]: Start difference. First operand 1695 states and 1994 transitions. Second operand has 26 states, 26 states have (on average 3.3846153846153846) internal successors, (88), 26 states have internal predecessors, (88), 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) [2025-01-10 00:28:39,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 00:28:39,272 INFO L93 Difference]: Finished difference Result 1719 states and 2033 transitions. [2025-01-10 00:28:39,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-01-10 00:28:39,273 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.3846153846153846) internal successors, (88), 26 states have internal predecessors, (88), 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 77 [2025-01-10 00:28:39,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 00:28:39,275 INFO L225 Difference]: With dead ends: 1719 [2025-01-10 00:28:39,275 INFO L226 Difference]: Without dead ends: 1713 [2025-01-10 00:28:39,276 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=728, Invalid=1434, Unknown=0, NotChecked=0, Total=2162 [2025-01-10 00:28:39,276 INFO L435 NwaCegarLoop]: 1391 mSDtfsCounter, 26 mSDsluCounter, 16640 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 18031 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-01-10 00:28:39,276 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 18031 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 618 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-01-10 00:28:39,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1713 states. [2025-01-10 00:28:39,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1713 to 1713. [2025-01-10 00:28:39,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1713 states, 1124 states have (on average 1.7758007117437722) internal successors, (1996), 1701 states have internal predecessors, (1996), 9 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2025-01-10 00:28:39,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1713 states to 1713 states and 2017 transitions. [2025-01-10 00:28:39,288 INFO L78 Accepts]: Start accepts. Automaton has 1713 states and 2017 transitions. Word has length 77 [2025-01-10 00:28:39,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 00:28:39,288 INFO L471 AbstractCegarLoop]: Abstraction has 1713 states and 2017 transitions. [2025-01-10 00:28:39,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.3846153846153846) internal successors, (88), 26 states have internal predecessors, (88), 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) [2025-01-10 00:28:39,288 INFO L276 IsEmpty]: Start isEmpty. Operand 1713 states and 2017 transitions. [2025-01-10 00:28:39,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2025-01-10 00:28:39,288 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 00:28:39,289 INFO L218 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:28:39,299 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-01-10 00:28:39,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:28:39,489 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-01-10 00:28:39,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:28:39,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1238632304, now seen corresponding path program 2 times [2025-01-10 00:28:39,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:28:39,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1044591948] [2025-01-10 00:28:39,490 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 00:28:39,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:28:39,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:28:39,491 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 00:28:39,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-01-10 00:28:39,637 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 89 statements into 2 equivalence classes. [2025-01-10 00:28:47,885 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 89 of 89 statements. [2025-01-10 00:28:47,886 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 00:28:47,886 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:28:47,903 INFO L256 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 64 conjuncts are in the unsatisfiable core [2025-01-10 00:28:47,908 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:28:47,970 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 [2025-01-10 00:28:47,978 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-01-10 00:28:47,979 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 [2025-01-10 00:28:47,996 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 [2025-01-10 00:28:47,999 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 [2025-01-10 00:28:48,049 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 [2025-01-10 00:28:48,052 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 [2025-01-10 00:28:48,332 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-01-10 00:28:48,332 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 [2025-01-10 00:28:48,340 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 [2025-01-10 00:28:48,363 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 [2025-01-10 00:28:48,367 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 [2025-01-10 00:28:48,381 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2025-01-10 00:28:48,381 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 00:28:48,736 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:28:48,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044591948] [2025-01-10 00:28:48,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1044591948] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 00:28:48,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [809183999] [2025-01-10 00:28:48,737 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 00:28:48,737 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-01-10 00:28:48,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 [2025-01-10 00:28:48,738 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-01-10 00:28:48,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2025-01-10 00:28:48,970 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 89 statements into 2 equivalence classes. [2025-01-10 00:28:49,491 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 89 of 89 statements. [2025-01-10 00:28:49,491 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 00:28:49,491 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:28:49,511 INFO L256 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 44 conjuncts are in the unsatisfiable core [2025-01-10 00:28:49,513 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:28:50,235 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:28:50,235 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 00:28:51,842 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:28:51,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [809183999] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 00:28:51,843 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 00:28:51,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 26, 26] total 58 [2025-01-10 00:28:51,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820329937] [2025-01-10 00:28:51,843 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 00:28:51,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2025-01-10 00:28:51,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:28:51,844 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2025-01-10 00:28:51,844 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=700, Invalid=2955, Unknown=5, NotChecked=0, Total=3660 [2025-01-10 00:28:51,845 INFO L87 Difference]: Start difference. First operand 1713 states and 2017 transitions. Second operand has 58 states, 57 states have (on average 2.982456140350877) internal successors, (170), 58 states have internal predecessors, (170), 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)