./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test4-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 48c9605d 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_FNV_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 efaea2320311f06fbd3071893d75fb70222c33e449b43348105f12b548a90ab4 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 07:51:48,444 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 07:51:48,517 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-08 07:51:48,522 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 07:51:48,525 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 07:51:48,556 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 07:51:48,557 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 07:51:48,558 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 07:51:48,558 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 07:51:48,558 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 07:51:48,559 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 07:51:48,559 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 07:51:48,560 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 07:51:48,560 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 07:51:48,560 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 07:51:48,560 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 07:51:48,560 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 07:51:48,561 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 07:51:48,561 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 07:51:48,561 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 07:51:48,561 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-08 07:51:48,561 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-08 07:51:48,561 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-08 07:51:48,561 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 07:51:48,562 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-08 07:51:48,562 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 07:51:48,562 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 07:51:48,562 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 07:51:48,562 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 07:51:48,562 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 07:51:48,562 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 07:51:48,562 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 07:51:48,563 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 07:51:48,563 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 07:51:48,563 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 07:51:48,563 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 07:51:48,563 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 07:51:48,564 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 07:51:48,564 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 07:51:48,564 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 07:51:48,564 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 07:51:48,564 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 07:51:48,564 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 -> efaea2320311f06fbd3071893d75fb70222c33e449b43348105f12b548a90ab4 [2025-02-08 07:51:48,837 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 07:51:48,846 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 07:51:48,850 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 07:51:48,851 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 07:51:48,851 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 07:51:48,853 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test4-3.i [2025-02-08 07:51:50,185 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/3c740d4d2/8b8fd05562b64cebab2ce6dc8c3a1cf7/FLAGcff433daf [2025-02-08 07:51:50,592 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 07:51:50,594 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test4-3.i [2025-02-08 07:51:50,616 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/3c740d4d2/8b8fd05562b64cebab2ce6dc8c3a1cf7/FLAGcff433daf [2025-02-08 07:51:50,638 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/3c740d4d2/8b8fd05562b64cebab2ce6dc8c3a1cf7 [2025-02-08 07:51:50,640 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 07:51:50,642 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 07:51:50,644 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 07:51:50,644 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 07:51:50,649 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 07:51:50,649 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 07:51:50" (1/1) ... [2025-02-08 07:51:50,651 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4db9aec2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:51:50, skipping insertion in model container [2025-02-08 07:51:50,652 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 07:51:50" (1/1) ... [2025-02-08 07:51:50,701 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 07:51:51,017 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:51:51,049 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:51:51,052 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:51:51,059 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:51:51,072 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:51:51,100 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:51:51,102 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:51:51,105 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:51:51,109 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:51:51,120 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:51:51,120 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:51:51,122 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:51:51,123 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:51:51,124 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:51:51,125 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:51:51,128 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:51:51,129 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:51:51,130 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:51:51,130 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:51:51,133 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:51:51,143 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 07:51:51,158 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) [2025-02-08 07:51:51,158 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6703fda4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:51:51, skipping insertion in model container [2025-02-08 07:51:51,158 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 07:51:51,159 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-02-08 07:51:51,162 INFO L158 Benchmark]: Toolchain (without parser) took 517.48ms. Allocated memory is still 142.6MB. Free memory was 112.1MB in the beginning and 90.2MB in the end (delta: 21.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-02-08 07:51:51,162 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 201.3MB. Free memory is still 122.0MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 07:51:51,162 INFO L158 Benchmark]: CACSL2BoogieTranslator took 515.31ms. Allocated memory is still 142.6MB. Free memory was 111.6MB in the beginning and 90.2MB in the end (delta: 21.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-02-08 07:51:51,166 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 201.3MB. Free memory is still 122.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 515.31ms. Allocated memory is still 142.6MB. Free memory was 111.6MB in the beginning and 90.2MB in the end (delta: 21.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 769]: 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_FNV_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 efaea2320311f06fbd3071893d75fb70222c33e449b43348105f12b548a90ab4 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 07:51:53,262 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 07:51:53,356 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-02-08 07:51:53,362 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 07:51:53,362 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 07:51:53,384 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 07:51:53,384 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 07:51:53,384 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 07:51:53,385 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 07:51:53,385 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 07:51:53,385 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 07:51:53,386 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 07:51:53,386 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 07:51:53,386 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 07:51:53,387 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 07:51:53,387 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 07:51:53,387 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 07:51:53,387 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 07:51:53,387 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 07:51:53,388 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 07:51:53,388 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-08 07:51:53,388 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-08 07:51:53,388 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-08 07:51:53,388 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 07:51:53,388 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-08 07:51:53,388 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-02-08 07:51:53,388 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-02-08 07:51:53,388 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 07:51:53,388 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 07:51:53,388 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 07:51:53,388 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 07:51:53,388 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 07:51:53,388 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 07:51:53,388 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 07:51:53,388 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 07:51:53,388 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 07:51:53,389 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 07:51:53,389 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 07:51:53,389 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-02-08 07:51:53,389 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-02-08 07:51:53,389 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 07:51:53,389 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 07:51:53,389 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 07:51:53,389 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 07:51:53,389 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 -> efaea2320311f06fbd3071893d75fb70222c33e449b43348105f12b548a90ab4 [2025-02-08 07:51:53,668 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 07:51:53,677 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 07:51:53,678 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 07:51:53,679 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 07:51:53,679 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 07:51:53,682 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test4-3.i [2025-02-08 07:51:55,018 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4380a810c/ddb3fcbbe8ce45268b1f7be53f1dd671/FLAG450f06c15 [2025-02-08 07:51:55,356 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 07:51:55,356 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test4-3.i [2025-02-08 07:51:55,376 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4380a810c/ddb3fcbbe8ce45268b1f7be53f1dd671/FLAG450f06c15 [2025-02-08 07:51:55,393 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4380a810c/ddb3fcbbe8ce45268b1f7be53f1dd671 [2025-02-08 07:51:55,395 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 07:51:55,397 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 07:51:55,399 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 07:51:55,399 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 07:51:55,403 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 07:51:55,403 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 07:51:55" (1/1) ... [2025-02-08 07:51:55,405 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a7788b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:51:55, skipping insertion in model container [2025-02-08 07:51:55,405 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 07:51:55" (1/1) ... [2025-02-08 07:51:55,456 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 07:51:55,869 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:51:55,910 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:51:55,919 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:51:55,928 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:51:55,936 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:51:55,984 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:51:55,987 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:51:55,990 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:51:55,998 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:51:56,019 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:51:56,020 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:51:56,022 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:51:56,024 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:51:56,025 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:51:56,026 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:51:56,031 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:51:56,032 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:51:56,035 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:51:56,035 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:51:56,038 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:51:56,045 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 07:51:56,063 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-02-08 07:51:56,076 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 07:51:56,122 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:51:56,140 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:51:56,141 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:51:56,143 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:51:56,148 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:51:56,170 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:51:56,171 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:51:56,175 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:51:56,179 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:51:56,186 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:51:56,187 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:51:56,188 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:51:56,189 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:51:56,189 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:51:56,190 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:51:56,192 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:51:56,193 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:51:56,193 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:51:56,194 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:51:56,196 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 07:51:56,199 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 07:51:56,203 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 07:51:56,300 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 07:51:56,342 INFO L204 MainTranslator]: Completed translation [2025-02-08 07:51:56,343 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:51:56 WrapperNode [2025-02-08 07:51:56,344 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 07:51:56,344 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 07:51:56,344 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 07:51:56,344 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 07:51:56,350 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:51:56" (1/1) ... [2025-02-08 07:51:56,385 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:51:56" (1/1) ... [2025-02-08 07:51:56,462 INFO L138 Inliner]: procedures = 179, calls = 435, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1441 [2025-02-08 07:51:56,465 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 07:51:56,465 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 07:51:56,465 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 07:51:56,465 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 07:51:56,478 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:51:56" (1/1) ... [2025-02-08 07:51:56,479 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:51:56" (1/1) ... [2025-02-08 07:51:56,498 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:51:56" (1/1) ... [2025-02-08 07:51:56,635 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]. [2025-02-08 07:51:56,636 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:51:56" (1/1) ... [2025-02-08 07:51:56,636 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:51:56" (1/1) ... [2025-02-08 07:51:56,687 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:51:56" (1/1) ... [2025-02-08 07:51:56,689 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:51:56" (1/1) ... [2025-02-08 07:51:56,694 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:51:56" (1/1) ... [2025-02-08 07:51:56,699 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:51:56" (1/1) ... [2025-02-08 07:51:56,707 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 07:51:56,711 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 07:51:56,712 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 07:51:56,712 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 07:51:56,713 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:51:56" (1/1) ... [2025-02-08 07:51:56,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 07:51:56,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:51:56,745 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) [2025-02-08 07:51:56,748 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 [2025-02-08 07:51:56,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2025-02-08 07:51:56,771 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2025-02-08 07:51:56,771 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-02-08 07:51:56,771 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-02-08 07:51:56,771 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-02-08 07:51:56,771 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-02-08 07:51:56,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-02-08 07:51:56,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-02-08 07:51:56,771 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-02-08 07:51:56,771 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-02-08 07:51:56,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 07:51:56,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 07:51:56,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-08 07:51:56,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-08 07:51:56,772 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-08 07:51:56,772 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-02-08 07:51:56,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-08 07:51:56,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-02-08 07:51:56,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-02-08 07:51:56,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-02-08 07:51:56,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-02-08 07:51:56,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 07:51:56,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 07:51:57,038 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 07:51:57,040 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 07:52:01,825 INFO L? ?]: Removed 1745 outVars from TransFormulas that were not future-live. [2025-02-08 07:52:01,825 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 07:52:01,873 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 07:52:01,874 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 07:52:01,874 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 07:52:01 BoogieIcfgContainer [2025-02-08 07:52:01,874 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 07:52:01,877 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 07:52:01,877 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 07:52:01,881 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 07:52:01,882 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 07:51:55" (1/3) ... [2025-02-08 07:52:01,882 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@97a3677 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 07:52:01, skipping insertion in model container [2025-02-08 07:52:01,883 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 07:51:56" (2/3) ... [2025-02-08 07:52:01,883 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@97a3677 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 07:52:01, skipping insertion in model container [2025-02-08 07:52:01,884 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 07:52:01" (3/3) ... [2025-02-08 07:52:01,885 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test4-3.i [2025-02-08 07:52:01,897 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 07:52:01,900 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_FNV_test4-3.i that has 4 procedures, 1644 locations, 1 initial locations, 45 loop locations, and 831 error locations. [2025-02-08 07:52:01,968 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 07:52:01,981 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;@3f057ec0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 07:52:01,982 INFO L334 AbstractCegarLoop]: Starting to check reachability of 831 error locations. [2025-02-08 07:52:01,991 INFO L276 IsEmpty]: Start isEmpty. Operand has 1639 states, 794 states have (on average 2.2367758186397984) internal successors, (1776), 1629 states have internal predecessors, (1776), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2025-02-08 07:52:01,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-02-08 07:52:01,996 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:52:01,998 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-02-08 07:52:01,999 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr828REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-02-08 07:52:02,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:52:02,005 INFO L85 PathProgramCache]: Analyzing trace with hash 56826206, now seen corresponding path program 1 times [2025-02-08 07:52:02,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:52:02,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1720662469] [2025-02-08 07:52:02,015 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:52:02,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:52:02,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:52:02,019 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) [2025-02-08 07:52:02,021 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 [2025-02-08 07:52:02,208 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-08 07:52:02,219 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-08 07:52:02,219 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:52:02,219 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:52:02,222 INFO L256 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-02-08 07:52:02,227 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:52:02,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:52:02,236 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:52:02,237 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:52:02,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720662469] [2025-02-08 07:52:02,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1720662469] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:52:02,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:52:02,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 07:52:02,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790953772] [2025-02-08 07:52:02,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:52:02,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-08 07:52:02,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:52:02,263 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-08 07:52:02,264 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-08 07:52:02,268 INFO L87 Difference]: Start difference. First operand has 1639 states, 794 states have (on average 2.2367758186397984) internal successors, (1776), 1629 states have internal predecessors, (1776), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:52:02,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:52:02,363 INFO L93 Difference]: Finished difference Result 1620 states and 1710 transitions. [2025-02-08 07:52:02,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-08 07:52:02,365 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2025-02-08 07:52:02,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:52:02,391 INFO L225 Difference]: With dead ends: 1620 [2025-02-08 07:52:02,391 INFO L226 Difference]: Without dead ends: 1615 [2025-02-08 07:52:02,394 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-08 07:52:02,396 INFO L435 NwaCegarLoop]: 1710 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1710 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 07:52:02,397 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1710 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 07:52:02,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1615 states. [2025-02-08 07:52:02,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1615 to 1615. [2025-02-08 07:52:02,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1615 states, 783 states have (on average 2.1379310344827585) internal successors, (1674), 1606 states have internal predecessors, (1674), 16 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-08 07:52:02,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1615 states to 1615 states and 1696 transitions. [2025-02-08 07:52:02,509 INFO L78 Accepts]: Start accepts. Automaton has 1615 states and 1696 transitions. Word has length 4 [2025-02-08 07:52:02,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:52:02,509 INFO L471 AbstractCegarLoop]: Abstraction has 1615 states and 1696 transitions. [2025-02-08 07:52:02,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:52:02,510 INFO L276 IsEmpty]: Start isEmpty. Operand 1615 states and 1696 transitions. [2025-02-08 07:52:02,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-02-08 07:52:02,510 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:52:02,510 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-02-08 07:52:02,518 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-08 07:52:02,714 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 [2025-02-08 07:52:02,714 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr828REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-02-08 07:52:02,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:52:02,715 INFO L85 PathProgramCache]: Analyzing trace with hash 56826237, now seen corresponding path program 1 times [2025-02-08 07:52:02,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:52:02,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2024804092] [2025-02-08 07:52:02,715 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:52:02,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:52:02,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:52:02,717 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) [2025-02-08 07:52:02,719 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 [2025-02-08 07:52:02,878 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-08 07:52:02,887 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-08 07:52:02,887 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:52:02,887 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:52:02,889 INFO L256 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 07:52:02,891 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:52:02,917 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 [2025-02-08 07:52:02,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:52:02,939 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:52:02,939 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:52:02,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024804092] [2025-02-08 07:52:02,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2024804092] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:52:02,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:52:02,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 07:52:02,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019302038] [2025-02-08 07:52:02,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:52:02,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 07:52:02,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:52:02,940 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 07:52:02,941 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 07:52:02,941 INFO L87 Difference]: Start difference. First operand 1615 states and 1696 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:52:04,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:52:04,933 INFO L93 Difference]: Finished difference Result 1522 states and 1604 transitions. [2025-02-08 07:52:04,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 07:52:04,933 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 [2025-02-08 07:52:04,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:52:04,938 INFO L225 Difference]: With dead ends: 1522 [2025-02-08 07:52:04,939 INFO L226 Difference]: Without dead ends: 1522 [2025-02-08 07:52:04,939 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 [2025-02-08 07:52:04,940 INFO L435 NwaCegarLoop]: 990 mSDtfsCounter, 1047 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 944 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1053 SdHoareTripleChecker+Valid, 1199 SdHoareTripleChecker+Invalid, 1046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-02-08 07:52:04,940 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1053 Valid, 1199 Invalid, 1046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 944 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-02-08 07:52:04,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1522 states. [2025-02-08 07:52:04,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1522 to 1521. [2025-02-08 07:52:04,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1521 states, 783 states have (on average 2.0178799489144317) internal successors, (1580), 1512 states have internal predecessors, (1580), 16 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-08 07:52:04,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1521 states to 1521 states and 1602 transitions. [2025-02-08 07:52:04,983 INFO L78 Accepts]: Start accepts. Automaton has 1521 states and 1602 transitions. Word has length 4 [2025-02-08 07:52:04,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:52:04,983 INFO L471 AbstractCegarLoop]: Abstraction has 1521 states and 1602 transitions. [2025-02-08 07:52:04,983 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) [2025-02-08 07:52:04,983 INFO L276 IsEmpty]: Start isEmpty. Operand 1521 states and 1602 transitions. [2025-02-08 07:52:04,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-02-08 07:52:04,984 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:52:04,985 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-02-08 07:52:04,993 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-08 07:52:05,185 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 [2025-02-08 07:52:05,186 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr829REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-02-08 07:52:05,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:52:05,186 INFO L85 PathProgramCache]: Analyzing trace with hash 56826238, now seen corresponding path program 1 times [2025-02-08 07:52:05,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:52:05,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1002629955] [2025-02-08 07:52:05,186 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:52:05,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:52:05,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:52:05,190 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) [2025-02-08 07:52:05,191 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 [2025-02-08 07:52:05,326 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-08 07:52:05,331 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-08 07:52:05,331 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:52:05,332 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:52:05,333 INFO L256 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 07:52:05,335 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:52:05,347 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 [2025-02-08 07:52:05,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:52:05,367 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:52:05,367 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:52:05,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002629955] [2025-02-08 07:52:05,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1002629955] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:52:05,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:52:05,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 07:52:05,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750892085] [2025-02-08 07:52:05,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:52:05,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 07:52:05,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:52:05,368 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 07:52:05,368 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 07:52:05,368 INFO L87 Difference]: Start difference. First operand 1521 states and 1602 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:52:08,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:52:08,258 INFO L93 Difference]: Finished difference Result 1845 states and 1946 transitions. [2025-02-08 07:52:08,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 07:52:08,258 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 [2025-02-08 07:52:08,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:52:08,264 INFO L225 Difference]: With dead ends: 1845 [2025-02-08 07:52:08,264 INFO L226 Difference]: Without dead ends: 1845 [2025-02-08 07:52:08,265 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 [2025-02-08 07:52:08,268 INFO L435 NwaCegarLoop]: 1356 mSDtfsCounter, 527 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 972 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 527 SdHoareTripleChecker+Valid, 2035 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2025-02-08 07:52:08,269 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [527 Valid, 2035 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 972 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2025-02-08 07:52:08,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1845 states. [2025-02-08 07:52:08,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1845 to 1693. [2025-02-08 07:52:08,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1693 states, 965 states have (on average 1.9740932642487046) internal successors, (1905), 1684 states have internal predecessors, (1905), 16 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-08 07:52:08,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1693 states to 1693 states and 1927 transitions. [2025-02-08 07:52:08,311 INFO L78 Accepts]: Start accepts. Automaton has 1693 states and 1927 transitions. Word has length 4 [2025-02-08 07:52:08,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:52:08,311 INFO L471 AbstractCegarLoop]: Abstraction has 1693 states and 1927 transitions. [2025-02-08 07:52:08,311 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) [2025-02-08 07:52:08,311 INFO L276 IsEmpty]: Start isEmpty. Operand 1693 states and 1927 transitions. [2025-02-08 07:52:08,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-02-08 07:52:08,312 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:52:08,312 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-02-08 07:52:08,320 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-08 07:52:08,515 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 [2025-02-08 07:52:08,516 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr208REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-02-08 07:52:08,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:52:08,516 INFO L85 PathProgramCache]: Analyzing trace with hash 55525408, now seen corresponding path program 1 times [2025-02-08 07:52:08,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:52:08,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [270854551] [2025-02-08 07:52:08,516 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:52:08,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:52:08,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:52:08,519 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) [2025-02-08 07:52:08,520 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 [2025-02-08 07:52:08,632 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-08 07:52:08,634 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-08 07:52:08,634 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:52:08,634 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:52:08,635 INFO L256 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 07:52:08,637 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:52:08,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:52:08,675 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:52:08,675 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:52:08,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270854551] [2025-02-08 07:52:08,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270854551] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:52:08,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:52:08,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 07:52:08,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522477173] [2025-02-08 07:52:08,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:52:08,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 07:52:08,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:52:08,679 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 07:52:08,680 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:52:08,680 INFO L87 Difference]: Start difference. First operand 1693 states and 1927 transitions. Second operand has 4 states, 4 states have (on average 1.0) 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) [2025-02-08 07:52:09,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:52:09,408 INFO L93 Difference]: Finished difference Result 2480 states and 2848 transitions. [2025-02-08 07:52:09,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 07:52:09,409 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.0) 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 [2025-02-08 07:52:09,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:52:09,417 INFO L225 Difference]: With dead ends: 2480 [2025-02-08 07:52:09,417 INFO L226 Difference]: Without dead ends: 2480 [2025-02-08 07:52:09,418 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:52:09,419 INFO L435 NwaCegarLoop]: 1589 mSDtfsCounter, 695 mSDsluCounter, 2934 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 4523 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-02-08 07:52:09,420 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [698 Valid, 4523 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-02-08 07:52:09,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2480 states. [2025-02-08 07:52:09,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2480 to 2181. [2025-02-08 07:52:09,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2181 states, 1453 states have (on average 1.9408121128699243) internal successors, (2820), 2169 states have internal predecessors, (2820), 19 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-02-08 07:52:09,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2181 states to 2181 states and 2848 transitions. [2025-02-08 07:52:09,493 INFO L78 Accepts]: Start accepts. Automaton has 2181 states and 2848 transitions. Word has length 4 [2025-02-08 07:52:09,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:52:09,493 INFO L471 AbstractCegarLoop]: Abstraction has 2181 states and 2848 transitions. [2025-02-08 07:52:09,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.0) 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) [2025-02-08 07:52:09,494 INFO L276 IsEmpty]: Start isEmpty. Operand 2181 states and 2848 transitions. [2025-02-08 07:52:09,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-02-08 07:52:09,494 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:52:09,494 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-02-08 07:52:09,503 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-08 07:52:09,695 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 [2025-02-08 07:52:09,695 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr202REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-02-08 07:52:09,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:52:09,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1721216683, now seen corresponding path program 1 times [2025-02-08 07:52:09,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:52:09,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1541352924] [2025-02-08 07:52:09,696 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:52:09,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:52:09,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:52:09,698 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) [2025-02-08 07:52:09,699 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 [2025-02-08 07:52:09,810 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-08 07:52:09,813 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-08 07:52:09,813 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:52:09,813 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:52:09,814 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 07:52:09,815 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:52:09,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:52:09,847 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:52:09,848 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:52:09,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541352924] [2025-02-08 07:52:09,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1541352924] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:52:09,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:52:09,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 07:52:09,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558335841] [2025-02-08 07:52:09,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:52:09,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 07:52:09,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:52:09,848 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 07:52:09,848 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 07:52:09,849 INFO L87 Difference]: Start difference. First operand 2181 states and 2848 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:52:10,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:52:10,071 INFO L93 Difference]: Finished difference Result 2442 states and 2984 transitions. [2025-02-08 07:52:10,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 07:52:10,072 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2025-02-08 07:52:10,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:52:10,081 INFO L225 Difference]: With dead ends: 2442 [2025-02-08 07:52:10,081 INFO L226 Difference]: Without dead ends: 2442 [2025-02-08 07:52:10,082 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 07:52:10,084 INFO L435 NwaCegarLoop]: 1662 mSDtfsCounter, 508 mSDsluCounter, 1525 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 3187 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 07:52:10,084 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [508 Valid, 3187 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 07:52:10,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2442 states. [2025-02-08 07:52:10,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2442 to 2041. [2025-02-08 07:52:10,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2041 states, 1313 states have (on average 1.9527798933739529) internal successors, (2564), 2029 states have internal predecessors, (2564), 19 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-02-08 07:52:10,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2041 states to 2041 states and 2592 transitions. [2025-02-08 07:52:10,125 INFO L78 Accepts]: Start accepts. Automaton has 2041 states and 2592 transitions. Word has length 5 [2025-02-08 07:52:10,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:52:10,126 INFO L471 AbstractCegarLoop]: Abstraction has 2041 states and 2592 transitions. [2025-02-08 07:52:10,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:52:10,126 INFO L276 IsEmpty]: Start isEmpty. Operand 2041 states and 2592 transitions. [2025-02-08 07:52:10,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-02-08 07:52:10,126 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:52:10,127 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-08 07:52:10,135 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-08 07:52:10,327 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 [2025-02-08 07:52:10,327 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-02-08 07:52:10,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:52:10,328 INFO L85 PathProgramCache]: Analyzing trace with hash 526791112, now seen corresponding path program 1 times [2025-02-08 07:52:10,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:52:10,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1701588059] [2025-02-08 07:52:10,328 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:52:10,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:52:10,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:52:10,330 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) [2025-02-08 07:52:10,331 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 [2025-02-08 07:52:10,441 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 07:52:10,446 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 07:52:10,446 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:52:10,446 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:52:10,447 INFO L256 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-08 07:52:10,448 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:52:10,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:52:10,465 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:52:10,465 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:52:10,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701588059] [2025-02-08 07:52:10,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701588059] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:52:10,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:52:10,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 07:52:10,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157388825] [2025-02-08 07:52:10,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:52:10,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 07:52:10,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:52:10,466 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 07:52:10,466 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 07:52:10,466 INFO L87 Difference]: Start difference. First operand 2041 states and 2592 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2025-02-08 07:52:12,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:52:12,118 INFO L93 Difference]: Finished difference Result 2398 states and 2965 transitions. [2025-02-08 07:52:12,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 07:52:12,119 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 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 [2025-02-08 07:52:12,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:52:12,125 INFO L225 Difference]: With dead ends: 2398 [2025-02-08 07:52:12,125 INFO L226 Difference]: Without dead ends: 2397 [2025-02-08 07:52:12,125 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 [2025-02-08 07:52:12,125 INFO L435 NwaCegarLoop]: 1595 mSDtfsCounter, 368 mSDsluCounter, 870 mSDsCounter, 0 mSdLazyCounter, 910 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 2465 SdHoareTripleChecker+Invalid, 910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-02-08 07:52:12,126 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 2465 Invalid, 910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 910 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-02-08 07:52:12,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2397 states. [2025-02-08 07:52:12,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2397 to 2043. [2025-02-08 07:52:12,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2043 states, 1315 states have (on average 1.9513307984790875) internal successors, (2566), 2031 states have internal predecessors, (2566), 19 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-02-08 07:52:12,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2043 states to 2043 states and 2594 transitions. [2025-02-08 07:52:12,166 INFO L78 Accepts]: Start accepts. Automaton has 2043 states and 2594 transitions. Word has length 7 [2025-02-08 07:52:12,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:52:12,167 INFO L471 AbstractCegarLoop]: Abstraction has 2043 states and 2594 transitions. [2025-02-08 07:52:12,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2025-02-08 07:52:12,167 INFO L276 IsEmpty]: Start isEmpty. Operand 2043 states and 2594 transitions. [2025-02-08 07:52:12,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-02-08 07:52:12,169 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:52:12,170 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 07:52:12,180 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-08 07:52:12,370 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 [2025-02-08 07:52:12,371 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr200REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-02-08 07:52:12,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:52:12,371 INFO L85 PathProgramCache]: Analyzing trace with hash -848935619, now seen corresponding path program 1 times [2025-02-08 07:52:12,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:52:12,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [180334375] [2025-02-08 07:52:12,372 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:52:12,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:52:12,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:52:12,374 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) [2025-02-08 07:52:12,377 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 [2025-02-08 07:52:12,502 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 07:52:12,506 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 07:52:12,506 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:52:12,506 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:52:12,507 INFO L256 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 07:52:12,509 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:52:12,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:52:12,563 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:52:12,563 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:52:12,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180334375] [2025-02-08 07:52:12,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180334375] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:52:12,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:52:12,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 07:52:12,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894164854] [2025-02-08 07:52:12,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:52:12,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 07:52:12,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:52:12,566 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 07:52:12,566 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:52:12,566 INFO L87 Difference]: Start difference. First operand 2043 states and 2594 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:52:13,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:52:13,346 INFO L93 Difference]: Finished difference Result 2444 states and 2985 transitions. [2025-02-08 07:52:13,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 07:52:13,346 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-02-08 07:52:13,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:52:13,352 INFO L225 Difference]: With dead ends: 2444 [2025-02-08 07:52:13,352 INFO L226 Difference]: Without dead ends: 2440 [2025-02-08 07:52:13,352 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 07:52:13,353 INFO L435 NwaCegarLoop]: 1662 mSDtfsCounter, 510 mSDsluCounter, 2971 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 4633 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-02-08 07:52:13,353 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [510 Valid, 4633 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-02-08 07:52:13,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2440 states. [2025-02-08 07:52:13,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2440 to 2039. [2025-02-08 07:52:13,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2039 states, 1311 states have (on average 1.9534706331045004) internal successors, (2561), 2027 states have internal predecessors, (2561), 19 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-02-08 07:52:13,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2039 states to 2039 states and 2589 transitions. [2025-02-08 07:52:13,388 INFO L78 Accepts]: Start accepts. Automaton has 2039 states and 2589 transitions. Word has length 8 [2025-02-08 07:52:13,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:52:13,389 INFO L471 AbstractCegarLoop]: Abstraction has 2039 states and 2589 transitions. [2025-02-08 07:52:13,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:52:13,389 INFO L276 IsEmpty]: Start isEmpty. Operand 2039 states and 2589 transitions. [2025-02-08 07:52:13,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-02-08 07:52:13,389 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:52:13,389 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 07:52:13,397 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-08 07:52:13,590 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 [2025-02-08 07:52:13,590 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr824REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-02-08 07:52:13,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:52:13,591 INFO L85 PathProgramCache]: Analyzing trace with hash 983609910, now seen corresponding path program 1 times [2025-02-08 07:52:13,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:52:13,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1220562331] [2025-02-08 07:52:13,591 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:52:13,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:52:13,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:52:13,593 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) [2025-02-08 07:52:13,594 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 [2025-02-08 07:52:13,718 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 07:52:13,737 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 07:52:13,738 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:52:13,738 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:52:13,741 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 07:52:13,743 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:52:13,748 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 [2025-02-08 07:52:13,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:52:13,775 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:52:13,776 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:52:13,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220562331] [2025-02-08 07:52:13,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220562331] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:52:13,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:52:13,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 07:52:13,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880554743] [2025-02-08 07:52:13,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:52:13,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 07:52:13,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:52:13,776 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 07:52:13,776 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:52:13,777 INFO L87 Difference]: Start difference. First operand 2039 states and 2589 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:52:16,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:52:16,310 INFO L93 Difference]: Finished difference Result 2024 states and 2551 transitions. [2025-02-08 07:52:16,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 07:52:16,311 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-02-08 07:52:16,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:52:16,320 INFO L225 Difference]: With dead ends: 2024 [2025-02-08 07:52:16,321 INFO L226 Difference]: Without dead ends: 2024 [2025-02-08 07:52:16,321 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 [2025-02-08 07:52:16,321 INFO L435 NwaCegarLoop]: 965 mSDtfsCounter, 1097 mSDsluCounter, 894 mSDsCounter, 0 mSdLazyCounter, 1736 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1103 SdHoareTripleChecker+Valid, 1859 SdHoareTripleChecker+Invalid, 1768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-02-08 07:52:16,322 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1103 Valid, 1859 Invalid, 1768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1736 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-02-08 07:52:16,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2024 states. [2025-02-08 07:52:16,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2024 to 2016. [2025-02-08 07:52:16,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2016 states, 1311 states have (on average 1.9183829138062547) internal successors, (2515), 2004 states have internal predecessors, (2515), 19 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-02-08 07:52:16,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2016 states to 2016 states and 2543 transitions. [2025-02-08 07:52:16,365 INFO L78 Accepts]: Start accepts. Automaton has 2016 states and 2543 transitions. Word has length 10 [2025-02-08 07:52:16,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:52:16,365 INFO L471 AbstractCegarLoop]: Abstraction has 2016 states and 2543 transitions. [2025-02-08 07:52:16,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:52:16,365 INFO L276 IsEmpty]: Start isEmpty. Operand 2016 states and 2543 transitions. [2025-02-08 07:52:16,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-02-08 07:52:16,366 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:52:16,366 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 07:52:16,375 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-08 07:52:16,566 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 [2025-02-08 07:52:16,567 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr825REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-02-08 07:52:16,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:52:16,568 INFO L85 PathProgramCache]: Analyzing trace with hash 983609911, now seen corresponding path program 1 times [2025-02-08 07:52:16,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:52:16,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1797547238] [2025-02-08 07:52:16,568 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:52:16,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:52:16,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:52:16,571 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) [2025-02-08 07:52:16,573 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 [2025-02-08 07:52:16,714 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 07:52:16,735 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 07:52:16,736 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:52:16,736 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:52:16,740 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 07:52:16,742 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:52:16,749 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 [2025-02-08 07:52:16,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:52:16,819 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:52:16,819 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:52:16,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797547238] [2025-02-08 07:52:16,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797547238] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:52:16,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:52:16,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 07:52:16,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648286053] [2025-02-08 07:52:16,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:52:16,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 07:52:16,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:52:16,820 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 07:52:16,820 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:52:16,820 INFO L87 Difference]: Start difference. First operand 2016 states and 2543 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:52:20,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:52:20,098 INFO L93 Difference]: Finished difference Result 2298 states and 2716 transitions. [2025-02-08 07:52:20,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 07:52:20,099 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-02-08 07:52:20,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:52:20,105 INFO L225 Difference]: With dead ends: 2298 [2025-02-08 07:52:20,105 INFO L226 Difference]: Without dead ends: 2298 [2025-02-08 07:52:20,105 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 [2025-02-08 07:52:20,106 INFO L435 NwaCegarLoop]: 1644 mSDtfsCounter, 650 mSDsluCounter, 1631 mSDsCounter, 0 mSdLazyCounter, 1906 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 650 SdHoareTripleChecker+Valid, 3275 SdHoareTripleChecker+Invalid, 1928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2025-02-08 07:52:20,106 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [650 Valid, 3275 Invalid, 1928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1906 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2025-02-08 07:52:20,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2298 states. [2025-02-08 07:52:20,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2298 to 2130. [2025-02-08 07:52:20,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2130 states, 1425 states have (on average 1.8617543859649124) internal successors, (2653), 2118 states have internal predecessors, (2653), 19 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-02-08 07:52:20,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2130 states to 2130 states and 2681 transitions. [2025-02-08 07:52:20,134 INFO L78 Accepts]: Start accepts. Automaton has 2130 states and 2681 transitions. Word has length 10 [2025-02-08 07:52:20,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:52:20,135 INFO L471 AbstractCegarLoop]: Abstraction has 2130 states and 2681 transitions. [2025-02-08 07:52:20,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:52:20,135 INFO L276 IsEmpty]: Start isEmpty. Operand 2130 states and 2681 transitions. [2025-02-08 07:52:20,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-02-08 07:52:20,136 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:52:20,136 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 07:52:20,146 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-02-08 07:52:20,336 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 [2025-02-08 07:52:20,336 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr825REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-02-08 07:52:20,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:52:20,337 INFO L85 PathProgramCache]: Analyzing trace with hash 128265336, now seen corresponding path program 1 times [2025-02-08 07:52:20,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:52:20,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [701724756] [2025-02-08 07:52:20,337 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:52:20,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:52:20,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:52:20,340 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) [2025-02-08 07:52:20,341 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 [2025-02-08 07:52:20,478 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-08 07:52:20,529 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-08 07:52:20,530 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:52:20,530 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:52:20,537 INFO L256 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 07:52:20,539 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:52:20,545 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 [2025-02-08 07:52:20,771 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:52:20,771 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 07:52:21,103 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:52:21,104 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:52:21,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701724756] [2025-02-08 07:52:21,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701724756] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 07:52:21,104 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 07:52:21,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2025-02-08 07:52:21,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825973964] [2025-02-08 07:52:21,104 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 07:52:21,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-08 07:52:21,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:52:21,104 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-08 07:52:21,105 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-02-08 07:52:21,105 INFO L87 Difference]: Start difference. First operand 2130 states and 2681 transitions. Second operand has 8 states, 7 states have (on average 8.142857142857142) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:52:30,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:52:30,277 INFO L93 Difference]: Finished difference Result 2685 states and 3246 transitions. [2025-02-08 07:52:30,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 07:52:30,278 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.142857142857142) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2025-02-08 07:52:30,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:52:30,289 INFO L225 Difference]: With dead ends: 2685 [2025-02-08 07:52:30,289 INFO L226 Difference]: Without dead ends: 2685 [2025-02-08 07:52:30,290 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2025-02-08 07:52:30,291 INFO L435 NwaCegarLoop]: 1685 mSDtfsCounter, 2065 mSDsluCounter, 3628 mSDsCounter, 0 mSdLazyCounter, 3981 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2067 SdHoareTripleChecker+Valid, 5313 SdHoareTripleChecker+Invalid, 4009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 3981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2025-02-08 07:52:30,291 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2067 Valid, 5313 Invalid, 4009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 3981 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2025-02-08 07:52:30,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2685 states. [2025-02-08 07:52:30,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2685 to 2294. [2025-02-08 07:52:30,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2294 states, 1589 states have (on average 1.815607300188798) internal successors, (2885), 2282 states have internal predecessors, (2885), 19 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-02-08 07:52:30,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2294 states to 2294 states and 2913 transitions. [2025-02-08 07:52:30,338 INFO L78 Accepts]: Start accepts. Automaton has 2294 states and 2913 transitions. Word has length 29 [2025-02-08 07:52:30,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:52:30,339 INFO L471 AbstractCegarLoop]: Abstraction has 2294 states and 2913 transitions. [2025-02-08 07:52:30,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.142857142857142) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:52:30,339 INFO L276 IsEmpty]: Start isEmpty. Operand 2294 states and 2913 transitions. [2025-02-08 07:52:30,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2025-02-08 07:52:30,341 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:52:30,341 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] [2025-02-08 07:52:30,354 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-08 07:52:30,541 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 [2025-02-08 07:52:30,542 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr743REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-02-08 07:52:30,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:52:30,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1370334131, now seen corresponding path program 1 times [2025-02-08 07:52:30,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:52:30,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1450841920] [2025-02-08 07:52:30,543 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:52:30,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:52:30,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:52:30,546 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) [2025-02-08 07:52:30,548 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 [2025-02-08 07:52:30,686 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-02-08 07:52:30,731 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-02-08 07:52:30,731 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:52:30,731 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:52:30,739 INFO L256 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 07:52:30,740 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:52:30,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:52:30,771 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:52:30,771 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:52:30,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450841920] [2025-02-08 07:52:30,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450841920] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:52:30,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:52:30,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 07:52:30,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120485047] [2025-02-08 07:52:30,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:52:30,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 07:52:30,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:52:30,772 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 07:52:30,772 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:52:30,772 INFO L87 Difference]: Start difference. First operand 2294 states and 2913 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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) [2025-02-08 07:52:30,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:52:30,842 INFO L93 Difference]: Finished difference Result 1983 states and 2477 transitions. [2025-02-08 07:52:30,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 07:52:30,843 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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 45 [2025-02-08 07:52:30,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:52:30,849 INFO L225 Difference]: With dead ends: 1983 [2025-02-08 07:52:30,849 INFO L226 Difference]: Without dead ends: 1983 [2025-02-08 07:52:30,849 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 07:52:30,850 INFO L435 NwaCegarLoop]: 1508 mSDtfsCounter, 56 mSDsluCounter, 2943 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 4451 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 [2025-02-08 07:52:30,850 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 4451 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 07:52:30,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1983 states. [2025-02-08 07:52:30,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1983 to 1981. [2025-02-08 07:52:30,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1981 states, 1299 states have (on average 1.8837567359507312) internal successors, (2447), 1969 states have internal predecessors, (2447), 19 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-02-08 07:52:30,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1981 states to 1981 states and 2475 transitions. [2025-02-08 07:52:30,881 INFO L78 Accepts]: Start accepts. Automaton has 1981 states and 2475 transitions. Word has length 45 [2025-02-08 07:52:30,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:52:30,881 INFO L471 AbstractCegarLoop]: Abstraction has 1981 states and 2475 transitions. [2025-02-08 07:52:30,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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) [2025-02-08 07:52:30,882 INFO L276 IsEmpty]: Start isEmpty. Operand 1981 states and 2475 transitions. [2025-02-08 07:52:30,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2025-02-08 07:52:30,884 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:52:30,885 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] [2025-02-08 07:52:30,898 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-08 07:52:31,085 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 [2025-02-08 07:52:31,085 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr743REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-02-08 07:52:31,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:52:31,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1693880581, now seen corresponding path program 1 times [2025-02-08 07:52:31,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:52:31,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1906551920] [2025-02-08 07:52:31,086 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:52:31,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:52:31,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:52:31,090 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) [2025-02-08 07:52:31,092 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 [2025-02-08 07:52:31,242 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 53 statements into 1 equivalence classes. [2025-02-08 07:52:31,333 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 53 of 53 statements. [2025-02-08 07:52:31,334 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:52:31,334 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:52:31,345 INFO L256 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 07:52:31,348 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:52:31,363 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 [2025-02-08 07:52:31,371 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 [2025-02-08 07:52:31,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-08 07:52:31,834 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 [2025-02-08 07:52:31,852 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-02-08 07:52:31,853 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 [2025-02-08 07:52:31,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:52:31,875 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:52:31,875 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:52:31,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906551920] [2025-02-08 07:52:31,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906551920] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:52:31,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:52:31,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 07:52:31,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896034548] [2025-02-08 07:52:31,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:52:31,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 07:52:31,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:52:31,876 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 07:52:31,876 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:52:31,876 INFO L87 Difference]: Start difference. First operand 1981 states and 2475 transitions. Second operand has 4 states, 3 states have (on average 17.666666666666668) internal successors, (53), 4 states have internal predecessors, (53), 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) [2025-02-08 07:52:34,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:52:34,206 INFO L93 Difference]: Finished difference Result 1897 states and 2350 transitions. [2025-02-08 07:52:34,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 07:52:34,206 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 17.666666666666668) internal successors, (53), 4 states have internal predecessors, (53), 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 53 [2025-02-08 07:52:34,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:52:34,213 INFO L225 Difference]: With dead ends: 1897 [2025-02-08 07:52:34,213 INFO L226 Difference]: Without dead ends: 1897 [2025-02-08 07:52:34,213 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:52:34,213 INFO L435 NwaCegarLoop]: 768 mSDtfsCounter, 910 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 1213 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 916 SdHoareTripleChecker+Valid, 1159 SdHoareTripleChecker+Invalid, 1304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2025-02-08 07:52:34,214 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [916 Valid, 1159 Invalid, 1304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1213 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2025-02-08 07:52:34,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1897 states. [2025-02-08 07:52:34,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1897 to 1715. [2025-02-08 07:52:34,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1715 states, 1117 states have (on average 1.7788719785138765) internal successors, (1987), 1703 states have internal predecessors, (1987), 19 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-02-08 07:52:34,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1715 states to 1715 states and 2015 transitions. [2025-02-08 07:52:34,241 INFO L78 Accepts]: Start accepts. Automaton has 1715 states and 2015 transitions. Word has length 53 [2025-02-08 07:52:34,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:52:34,241 INFO L471 AbstractCegarLoop]: Abstraction has 1715 states and 2015 transitions. [2025-02-08 07:52:34,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 17.666666666666668) internal successors, (53), 4 states have internal predecessors, (53), 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) [2025-02-08 07:52:34,242 INFO L276 IsEmpty]: Start isEmpty. Operand 1715 states and 2015 transitions. [2025-02-08 07:52:34,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2025-02-08 07:52:34,245 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:52:34,245 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 07:52:34,259 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-02-08 07:52:34,450 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 [2025-02-08 07:52:34,450 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr736REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-02-08 07:52:34,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:52:34,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1687724383, now seen corresponding path program 1 times [2025-02-08 07:52:34,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:52:34,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1446798847] [2025-02-08 07:52:34,451 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:52:34,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:52:34,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:52:34,453 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) [2025-02-08 07:52:34,461 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 [2025-02-08 07:52:34,622 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-02-08 07:52:34,695 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-02-08 07:52:34,695 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:52:34,695 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:52:34,706 INFO L256 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-08 07:52:34,710 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:52:34,718 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 [2025-02-08 07:52:34,731 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 [2025-02-08 07:52:34,751 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 [2025-02-08 07:52:34,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:52:34,760 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:52:34,760 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:52:34,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446798847] [2025-02-08 07:52:34,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446798847] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:52:34,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:52:34,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 07:52:34,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791209641] [2025-02-08 07:52:34,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:52:34,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 07:52:34,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:52:34,761 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 07:52:34,761 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 07:52:34,761 INFO L87 Difference]: Start difference. First operand 1715 states and 2015 transitions. Second operand has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:52:37,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:52:37,178 INFO L93 Difference]: Finished difference Result 1714 states and 2013 transitions. [2025-02-08 07:52:37,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 07:52:37,179 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2025-02-08 07:52:37,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:52:37,182 INFO L225 Difference]: With dead ends: 1714 [2025-02-08 07:52:37,182 INFO L226 Difference]: Without dead ends: 1714 [2025-02-08 07:52:37,182 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-08 07:52:37,183 INFO L435 NwaCegarLoop]: 1434 mSDtfsCounter, 2 mSDsluCounter, 2223 mSDsCounter, 0 mSdLazyCounter, 2086 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3657 SdHoareTripleChecker+Invalid, 2087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2025-02-08 07:52:37,183 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3657 Invalid, 2087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2086 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2025-02-08 07:52:37,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1714 states. [2025-02-08 07:52:37,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1714 to 1714. [2025-02-08 07:52:37,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1714 states, 1117 states have (on average 1.7770814682184422) internal successors, (1985), 1702 states have internal predecessors, (1985), 19 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-02-08 07:52:37,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1714 states to 1714 states and 2013 transitions. [2025-02-08 07:52:37,215 INFO L78 Accepts]: Start accepts. Automaton has 1714 states and 2013 transitions. Word has length 58 [2025-02-08 07:52:37,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:52:37,215 INFO L471 AbstractCegarLoop]: Abstraction has 1714 states and 2013 transitions. [2025-02-08 07:52:37,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:52:37,216 INFO L276 IsEmpty]: Start isEmpty. Operand 1714 states and 2013 transitions. [2025-02-08 07:52:37,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2025-02-08 07:52:37,218 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:52:37,218 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 07:52:37,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-02-08 07:52:37,419 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 [2025-02-08 07:52:37,419 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr737REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-02-08 07:52:37,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:52:37,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1687724382, now seen corresponding path program 1 times [2025-02-08 07:52:37,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:52:37,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1586441368] [2025-02-08 07:52:37,420 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:52:37,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:52:37,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:52:37,422 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) [2025-02-08 07:52:37,424 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 [2025-02-08 07:52:37,580 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-02-08 07:52:37,647 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-02-08 07:52:37,647 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:52:37,647 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:52:37,656 INFO L256 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-08 07:52:37,661 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:52:37,671 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 [2025-02-08 07:52:37,691 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 [2025-02-08 07:52:37,700 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 [2025-02-08 07:52:37,738 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 [2025-02-08 07:52:37,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:52:37,751 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:52:37,751 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:52:37,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586441368] [2025-02-08 07:52:37,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586441368] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:52:37,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:52:37,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 07:52:37,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957341237] [2025-02-08 07:52:37,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:52:37,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 07:52:37,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:52:37,752 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 07:52:37,752 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 07:52:37,752 INFO L87 Difference]: Start difference. First operand 1714 states and 2013 transitions. Second operand has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:52:41,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:52:41,107 INFO L93 Difference]: Finished difference Result 1713 states and 2011 transitions. [2025-02-08 07:52:41,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 07:52:41,107 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2025-02-08 07:52:41,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:52:41,111 INFO L225 Difference]: With dead ends: 1713 [2025-02-08 07:52:41,111 INFO L226 Difference]: Without dead ends: 1713 [2025-02-08 07:52:41,111 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-08 07:52:41,112 INFO L435 NwaCegarLoop]: 1434 mSDtfsCounter, 1 mSDsluCounter, 2266 mSDsCounter, 0 mSdLazyCounter, 2040 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3700 SdHoareTripleChecker+Invalid, 2041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2025-02-08 07:52:41,112 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 3700 Invalid, 2041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2040 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2025-02-08 07:52:41,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1713 states. [2025-02-08 07:52:41,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1713 to 1713. [2025-02-08 07:52:41,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1713 states, 1115 states have (on average 1.77847533632287) internal successors, (1983), 1701 states have internal predecessors, (1983), 19 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-02-08 07:52:41,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1713 states to 1713 states and 2011 transitions. [2025-02-08 07:52:41,134 INFO L78 Accepts]: Start accepts. Automaton has 1713 states and 2011 transitions. Word has length 58 [2025-02-08 07:52:41,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:52:41,134 INFO L471 AbstractCegarLoop]: Abstraction has 1713 states and 2011 transitions. [2025-02-08 07:52:41,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 07:52:41,135 INFO L276 IsEmpty]: Start isEmpty. Operand 1713 states and 2011 transitions. [2025-02-08 07:52:41,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-02-08 07:52:41,135 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:52:41,135 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 07:52:41,150 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-02-08 07:52:41,336 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 [2025-02-08 07:52:41,336 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr732REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-02-08 07:52:41,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:52:41,336 INFO L85 PathProgramCache]: Analyzing trace with hash 383624830, now seen corresponding path program 1 times [2025-02-08 07:52:41,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:52:41,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1658012885] [2025-02-08 07:52:41,337 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:52:41,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:52:41,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:52:41,339 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) [2025-02-08 07:52:41,340 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 [2025-02-08 07:52:41,498 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-02-08 07:52:41,558 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-02-08 07:52:41,559 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:52:41,559 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:52:41,567 INFO L256 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-08 07:52:41,569 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:52:41,575 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 [2025-02-08 07:52:41,672 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 [2025-02-08 07:52:41,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:52:41,687 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:52:41,687 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:52:41,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658012885] [2025-02-08 07:52:41,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658012885] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:52:41,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:52:41,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 07:52:41,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371842901] [2025-02-08 07:52:41,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:52:41,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 07:52:41,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:52:41,689 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 07:52:41,689 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-02-08 07:52:41,689 INFO L87 Difference]: Start difference. First operand 1713 states and 2011 transitions. Second operand has 7 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 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) [2025-02-08 07:52:45,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:52:45,764 INFO L93 Difference]: Finished difference Result 1731 states and 2041 transitions. [2025-02-08 07:52:45,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 07:52:45,765 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 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 66 [2025-02-08 07:52:45,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:52:45,773 INFO L225 Difference]: With dead ends: 1731 [2025-02-08 07:52:45,776 INFO L226 Difference]: Without dead ends: 1731 [2025-02-08 07:52:45,777 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2025-02-08 07:52:45,777 INFO L435 NwaCegarLoop]: 1419 mSDtfsCounter, 10 mSDsluCounter, 4430 mSDsCounter, 0 mSdLazyCounter, 2748 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 5849 SdHoareTripleChecker+Invalid, 2765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2025-02-08 07:52:45,778 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 5849 Invalid, 2765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2748 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2025-02-08 07:52:45,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1731 states. [2025-02-08 07:52:45,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1731 to 1722. [2025-02-08 07:52:45,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1722 states, 1123 states have (on average 1.7756010685663401) internal successors, (1994), 1708 states have internal predecessors, (1994), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 11 states have call predecessors, (18), 9 states have call successors, (18) [2025-02-08 07:52:45,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1722 states to 1722 states and 2031 transitions. [2025-02-08 07:52:45,800 INFO L78 Accepts]: Start accepts. Automaton has 1722 states and 2031 transitions. Word has length 66 [2025-02-08 07:52:45,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:52:45,800 INFO L471 AbstractCegarLoop]: Abstraction has 1722 states and 2031 transitions. [2025-02-08 07:52:45,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 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) [2025-02-08 07:52:45,801 INFO L276 IsEmpty]: Start isEmpty. Operand 1722 states and 2031 transitions. [2025-02-08 07:52:45,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-02-08 07:52:45,801 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:52:45,801 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 07:52:45,819 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-02-08 07:52:46,002 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 [2025-02-08 07:52:46,002 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr733REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-02-08 07:52:46,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:52:46,002 INFO L85 PathProgramCache]: Analyzing trace with hash 383624831, now seen corresponding path program 1 times [2025-02-08 07:52:46,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:52:46,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [552078470] [2025-02-08 07:52:46,003 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:52:46,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:52:46,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:52:46,005 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) [2025-02-08 07:52:46,006 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 [2025-02-08 07:52:46,169 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-02-08 07:52:46,253 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-02-08 07:52:46,253 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:52:46,253 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:52:46,266 INFO L256 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 07:52:46,268 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:52:46,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:52:46,288 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 07:52:46,288 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:52:46,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552078470] [2025-02-08 07:52:46,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552078470] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 07:52:46,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 07:52:46,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 07:52:46,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122482054] [2025-02-08 07:52:46,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 07:52:46,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 07:52:46,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:52:46,289 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 07:52:46,289 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:52:46,289 INFO L87 Difference]: Start difference. First operand 1722 states and 2031 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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) [2025-02-08 07:52:46,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:52:46,354 INFO L93 Difference]: Finished difference Result 1716 states and 2017 transitions. [2025-02-08 07:52:46,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 07:52:46,355 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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 66 [2025-02-08 07:52:46,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:52:46,362 INFO L225 Difference]: With dead ends: 1716 [2025-02-08 07:52:46,362 INFO L226 Difference]: Without dead ends: 1716 [2025-02-08 07:52:46,362 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 07:52:46,363 INFO L435 NwaCegarLoop]: 1433 mSDtfsCounter, 0 mSDsluCounter, 2858 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4291 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 [2025-02-08 07:52:46,364 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4291 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 07:52:46,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1716 states. [2025-02-08 07:52:46,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1716 to 1716. [2025-02-08 07:52:46,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1716 states, 1117 states have (on average 1.7779767233661594) internal successors, (1986), 1704 states have internal predecessors, (1986), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2025-02-08 07:52:46,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1716 states to 1716 states and 2017 transitions. [2025-02-08 07:52:46,394 INFO L78 Accepts]: Start accepts. Automaton has 1716 states and 2017 transitions. Word has length 66 [2025-02-08 07:52:46,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:52:46,395 INFO L471 AbstractCegarLoop]: Abstraction has 1716 states and 2017 transitions. [2025-02-08 07:52:46,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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) [2025-02-08 07:52:46,395 INFO L276 IsEmpty]: Start isEmpty. Operand 1716 states and 2017 transitions. [2025-02-08 07:52:46,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-02-08 07:52:46,395 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:52:46,395 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] [2025-02-08 07:52:46,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-02-08 07:52:46,599 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 [2025-02-08 07:52:46,600 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr732REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-02-08 07:52:46,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:52:46,601 INFO L85 PathProgramCache]: Analyzing trace with hash 624943748, now seen corresponding path program 1 times [2025-02-08 07:52:46,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:52:46,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1884878008] [2025-02-08 07:52:46,601 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:52:46,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:52:46,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:52:46,603 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) [2025-02-08 07:52:46,604 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 [2025-02-08 07:52:46,764 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-02-08 07:52:46,842 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-02-08 07:52:46,842 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:52:46,842 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:52:46,851 INFO L256 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 07:52:46,853 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:52:46,872 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:52:46,872 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 07:52:46,943 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:52:46,943 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:52:46,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884878008] [2025-02-08 07:52:46,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884878008] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 07:52:46,944 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 07:52:46,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2025-02-08 07:52:46,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520798583] [2025-02-08 07:52:46,944 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 07:52:46,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-08 07:52:46,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:52:46,945 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-08 07:52:46,946 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-02-08 07:52:46,947 INFO L87 Difference]: Start difference. First operand 1716 states and 2017 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 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) [2025-02-08 07:52:47,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:52:47,144 INFO L93 Difference]: Finished difference Result 1728 states and 2036 transitions. [2025-02-08 07:52:47,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 07:52:47,145 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 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 67 [2025-02-08 07:52:47,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:52:47,150 INFO L225 Difference]: With dead ends: 1728 [2025-02-08 07:52:47,150 INFO L226 Difference]: Without dead ends: 1728 [2025-02-08 07:52:47,150 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2025-02-08 07:52:47,151 INFO L435 NwaCegarLoop]: 1432 mSDtfsCounter, 6 mSDsluCounter, 5710 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 7142 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 07:52:47,151 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 7142 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 07:52:47,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1728 states. [2025-02-08 07:52:47,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1728 to 1726. [2025-02-08 07:52:47,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1726 states, 1126 states have (on average 1.7770870337477798) internal successors, (2001), 1713 states have internal predecessors, (2001), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2025-02-08 07:52:47,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1726 states to 1726 states and 2032 transitions. [2025-02-08 07:52:47,178 INFO L78 Accepts]: Start accepts. Automaton has 1726 states and 2032 transitions. Word has length 67 [2025-02-08 07:52:47,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:52:47,178 INFO L471 AbstractCegarLoop]: Abstraction has 1726 states and 2032 transitions. [2025-02-08 07:52:47,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 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) [2025-02-08 07:52:47,179 INFO L276 IsEmpty]: Start isEmpty. Operand 1726 states and 2032 transitions. [2025-02-08 07:52:47,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2025-02-08 07:52:47,179 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:52:47,179 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] [2025-02-08 07:52:47,192 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-02-08 07:52:47,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:52:47,380 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr732REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-02-08 07:52:47,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:52:47,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1148225538, now seen corresponding path program 2 times [2025-02-08 07:52:47,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:52:47,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1202971806] [2025-02-08 07:52:47,381 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 07:52:47,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:52:47,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:52:47,383 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 07:52:47,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-02-08 07:52:47,546 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 70 statements into 2 equivalence classes. [2025-02-08 07:53:06,402 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 70 of 70 statements. [2025-02-08 07:53:06,402 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 07:53:06,402 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:53:06,420 INFO L256 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-02-08 07:53:06,422 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:53:06,426 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 [2025-02-08 07:53:06,508 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-02-08 07:53:06,508 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 [2025-02-08 07:53:06,524 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 [2025-02-08 07:53:06,699 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-02-08 07:53:06,699 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 [2025-02-08 07:53:06,740 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 [2025-02-08 07:53:06,757 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 07:53:06,758 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 07:53:06,836 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2025-02-08 07:53:06,836 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 [2025-02-08 07:53:06,846 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_854 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_#t~mem32#1.base| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_854) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))) is different from false [2025-02-08 07:53:06,849 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 07:53:06,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202971806] [2025-02-08 07:53:06,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1202971806] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 07:53:06,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1276049060] [2025-02-08 07:53:06,851 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 07:53:06,851 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-02-08 07:53:06,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 [2025-02-08 07:53:06,879 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-02-08 07:53:06,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2025-02-08 07:53:07,124 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 70 statements into 2 equivalence classes. [2025-02-08 07:53:07,775 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 70 of 70 statements. [2025-02-08 07:53:07,775 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 07:53:07,775 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:53:07,797 INFO L256 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-08 07:53:07,798 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 07:53:07,908 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:53:07,908 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 07:53:08,106 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 07:53:08,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1276049060] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 07:53:08,106 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 07:53:08,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 23 [2025-02-08 07:53:08,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800479506] [2025-02-08 07:53:08,106 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 07:53:08,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-08 07:53:08,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 07:53:08,107 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-08 07:53:08,107 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=467, Unknown=1, NotChecked=44, Total=600 [2025-02-08 07:53:08,107 INFO L87 Difference]: Start difference. First operand 1726 states and 2032 transitions. Second operand has 23 states, 22 states have (on average 6.363636363636363) internal successors, (140), 22 states have internal predecessors, (140), 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) [2025-02-08 07:53:16,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 07:53:16,559 INFO L93 Difference]: Finished difference Result 1742 states and 2058 transitions. [2025-02-08 07:53:16,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-02-08 07:53:16,560 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 6.363636363636363) internal successors, (140), 22 states have internal predecessors, (140), 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 70 [2025-02-08 07:53:16,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 07:53:16,563 INFO L225 Difference]: With dead ends: 1742 [2025-02-08 07:53:16,563 INFO L226 Difference]: Without dead ends: 1738 [2025-02-08 07:53:16,564 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=407, Invalid=2046, Unknown=1, NotChecked=96, Total=2550 [2025-02-08 07:53:16,564 INFO L435 NwaCegarLoop]: 939 mSDtfsCounter, 946 mSDsluCounter, 10528 mSDsCounter, 0 mSdLazyCounter, 7876 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 955 SdHoareTripleChecker+Valid, 11467 SdHoareTripleChecker+Invalid, 7919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 7876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2025-02-08 07:53:16,564 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [955 Valid, 11467 Invalid, 7919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 7876 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2025-02-08 07:53:16,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1738 states. [2025-02-08 07:53:16,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1738 to 1734. [2025-02-08 07:53:16,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1734 states, 1135 states have (on average 1.7718061674008811) internal successors, (2011), 1721 states have internal predecessors, (2011), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2025-02-08 07:53:16,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1734 states to 1734 states and 2042 transitions. [2025-02-08 07:53:16,599 INFO L78 Accepts]: Start accepts. Automaton has 1734 states and 2042 transitions. Word has length 70 [2025-02-08 07:53:16,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 07:53:16,599 INFO L471 AbstractCegarLoop]: Abstraction has 1734 states and 2042 transitions. [2025-02-08 07:53:16,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 6.363636363636363) internal successors, (140), 22 states have internal predecessors, (140), 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) [2025-02-08 07:53:16,599 INFO L276 IsEmpty]: Start isEmpty. Operand 1734 states and 2042 transitions. [2025-02-08 07:53:16,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2025-02-08 07:53:16,602 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 07:53:16,602 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] [2025-02-08 07:53:16,639 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-02-08 07:53:16,810 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (20)] Ended with exit code 0 [2025-02-08 07:53:17,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2025-02-08 07:53:17,003 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr733REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-02-08 07:53:17,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 07:53:17,004 INFO L85 PathProgramCache]: Analyzing trace with hash 672614975, now seen corresponding path program 1 times [2025-02-08 07:53:17,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 07:53:17,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [736379036] [2025-02-08 07:53:17,004 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 07:53:17,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 07:53:17,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 07:53:17,006 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) [2025-02-08 07:53:17,007 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 [2025-02-08 07:53:17,183 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 76 statements into 1 equivalence classes. [2025-02-08 07:53:17,263 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 76 of 76 statements. [2025-02-08 07:53:17,263 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 07:53:17,263 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 07:53:17,273 INFO L256 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-08 07:53:17,274 INFO L279 TraceCheckSpWp]: Computing forward predicates...