./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/memleaks_test23_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c00e63dc 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/ldv-memsafety/memleaks_test23_1.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 03499c01c9320e6c56c78c984f54a0b0b3f62caee089ccaa631f137e86019454 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 10:25:47,289 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 10:25:47,329 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-06 10:25:47,333 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 10:25:47,333 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 10:25:47,347 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 10:25:47,347 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 10:25:47,348 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 10:25:47,348 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 10:25:47,348 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 10:25:47,348 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 10:25:47,348 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 10:25:47,348 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 10:25:47,348 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 10:25:47,349 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 10:25:47,349 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 10:25:47,349 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 10:25:47,349 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 10:25:47,349 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 10:25:47,349 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 10:25:47,349 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-06 10:25:47,349 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-06 10:25:47,349 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-06 10:25:47,350 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 10:25:47,350 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-06 10:25:47,350 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 10:25:47,350 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 10:25:47,350 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 10:25:47,350 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 10:25:47,350 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 10:25:47,350 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 10:25:47,350 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 10:25:47,350 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 10:25:47,350 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 10:25:47,351 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 10:25:47,351 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 10:25:47,351 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 10:25:47,351 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 10:25:47,351 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 10:25:47,351 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 10:25:47,351 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 10:25:47,351 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 10:25:47,351 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 -> 03499c01c9320e6c56c78c984f54a0b0b3f62caee089ccaa631f137e86019454 [2025-02-06 10:25:47,613 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 10:25:47,620 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 10:25:47,622 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 10:25:47,622 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 10:25:47,623 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 10:25:47,624 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test23_1.i [2025-02-06 10:25:48,801 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/069e3961e/dc2d0ec4afe54f27a6f743f60534d22f/FLAG8d466ab3b [2025-02-06 10:25:49,119 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 10:25:49,120 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test23_1.i [2025-02-06 10:25:49,140 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/069e3961e/dc2d0ec4afe54f27a6f743f60534d22f/FLAG8d466ab3b [2025-02-06 10:25:49,377 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/069e3961e/dc2d0ec4afe54f27a6f743f60534d22f [2025-02-06 10:25:49,379 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 10:25:49,380 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 10:25:49,382 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 10:25:49,382 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 10:25:49,386 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 10:25:49,386 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 10:25:49" (1/1) ... [2025-02-06 10:25:49,388 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48c85c37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:25:49, skipping insertion in model container [2025-02-06 10:25:49,388 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 10:25:49" (1/1) ... [2025-02-06 10:25:49,415 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 10:25:49,671 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 10:25:49,790 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 10:25:49,797 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 10:25:49,818 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) [2025-02-06 10:25:49,819 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5da35e28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:25:49, skipping insertion in model container [2025-02-06 10:25:49,819 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 10:25:49,819 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-02-06 10:25:49,823 INFO L158 Benchmark]: Toolchain (without parser) took 440.55ms. Allocated memory is still 142.6MB. Free memory was 105.2MB in the beginning and 90.4MB in the end (delta: 14.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-06 10:25:49,824 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 201.3MB. Free memory is still 129.8MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 10:25:49,825 INFO L158 Benchmark]: CACSL2BoogieTranslator took 436.98ms. Allocated memory is still 142.6MB. Free memory was 105.2MB in the beginning and 90.4MB in the end (delta: 14.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-06 10:25:49,826 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 201.3MB. Free memory is still 129.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 436.98ms. Allocated memory is still 142.6MB. Free memory was 105.2MB in the beginning and 90.4MB in the end (delta: 14.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 607]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-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/ldv-memsafety/memleaks_test23_1.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 03499c01c9320e6c56c78c984f54a0b0b3f62caee089ccaa631f137e86019454 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 10:25:51,713 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 10:25:51,793 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-02-06 10:25:51,798 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 10:25:51,798 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 10:25:51,816 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 10:25:51,817 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 10:25:51,817 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 10:25:51,817 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 10:25:51,817 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 10:25:51,817 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 10:25:51,817 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 10:25:51,818 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 10:25:51,818 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 10:25:51,818 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 10:25:51,818 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 10:25:51,818 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 10:25:51,818 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 10:25:51,818 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 10:25:51,818 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 10:25:51,818 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-06 10:25:51,818 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-06 10:25:51,819 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-06 10:25:51,819 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 10:25:51,819 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-06 10:25:51,819 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-02-06 10:25:51,819 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-02-06 10:25:51,819 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 10:25:51,819 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 10:25:51,819 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 10:25:51,819 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 10:25:51,819 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 10:25:51,819 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 10:25:51,819 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 10:25:51,820 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 10:25:51,820 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 10:25:51,820 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 10:25:51,820 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 10:25:51,820 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-02-06 10:25:51,820 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-02-06 10:25:51,820 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 10:25:51,820 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 10:25:51,820 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 10:25:51,820 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 10:25:51,820 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 -> 03499c01c9320e6c56c78c984f54a0b0b3f62caee089ccaa631f137e86019454 [2025-02-06 10:25:52,079 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 10:25:52,084 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 10:25:52,086 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 10:25:52,086 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 10:25:52,087 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 10:25:52,087 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test23_1.i [2025-02-06 10:25:53,300 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b43cc133b/32242c7152f54dc2b56e39e83bcbd14a/FLAG65a4224da [2025-02-06 10:25:53,559 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 10:25:53,560 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test23_1.i [2025-02-06 10:25:53,575 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b43cc133b/32242c7152f54dc2b56e39e83bcbd14a/FLAG65a4224da [2025-02-06 10:25:53,592 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b43cc133b/32242c7152f54dc2b56e39e83bcbd14a [2025-02-06 10:25:53,595 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 10:25:53,597 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 10:25:53,598 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 10:25:53,599 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 10:25:53,602 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 10:25:53,603 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 10:25:53" (1/1) ... [2025-02-06 10:25:53,605 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31ed981f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:25:53, skipping insertion in model container [2025-02-06 10:25:53,605 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 10:25:53" (1/1) ... [2025-02-06 10:25:53,642 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 10:25:53,848 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 10:25:53,924 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 10:25:53,927 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 10:25:53,951 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-02-06 10:25:53,967 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 10:25:53,995 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 10:25:54,031 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 10:25:54,034 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 10:25:54,039 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 10:25:54,085 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 10:25:54,122 INFO L204 MainTranslator]: Completed translation [2025-02-06 10:25:54,124 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:25:54 WrapperNode [2025-02-06 10:25:54,124 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 10:25:54,125 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 10:25:54,125 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 10:25:54,126 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 10:25:54,130 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:25:54" (1/1) ... [2025-02-06 10:25:54,147 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:25:54" (1/1) ... [2025-02-06 10:25:54,163 INFO L138 Inliner]: procedures = 175, calls = 121, calls flagged for inlining = 30, calls inlined = 15, statements flattened = 206 [2025-02-06 10:25:54,163 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 10:25:54,164 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 10:25:54,164 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 10:25:54,164 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 10:25:54,170 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:25:54" (1/1) ... [2025-02-06 10:25:54,170 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:25:54" (1/1) ... [2025-02-06 10:25:54,174 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:25:54" (1/1) ... [2025-02-06 10:25:54,206 INFO L175 MemorySlicer]: Split 37 memory accesses to 4 slices as follows [2, 1, 29, 5]. 78 percent of accesses are in the largest equivalence class. The 4 initializations are split as follows [2, 0, 2, 0]. The 17 writes are split as follows [0, 0, 13, 4]. [2025-02-06 10:25:54,206 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:25:54" (1/1) ... [2025-02-06 10:25:54,206 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:25:54" (1/1) ... [2025-02-06 10:25:54,230 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:25:54" (1/1) ... [2025-02-06 10:25:54,231 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:25:54" (1/1) ... [2025-02-06 10:25:54,236 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:25:54" (1/1) ... [2025-02-06 10:25:54,237 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:25:54" (1/1) ... [2025-02-06 10:25:54,243 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 10:25:54,244 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 10:25:54,244 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 10:25:54,244 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 10:25:54,245 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:25:54" (1/1) ... [2025-02-06 10:25:54,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 10:25:54,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:25:54,271 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) [2025-02-06 10:25:54,276 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 [2025-02-06 10:25:54,291 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-02-06 10:25:54,291 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-02-06 10:25:54,291 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2025-02-06 10:25:54,291 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2025-02-06 10:25:54,291 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2025-02-06 10:25:54,291 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2025-02-06 10:25:54,291 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2025-02-06 10:25:54,291 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2025-02-06 10:25:54,291 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2025-02-06 10:25:54,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2025-02-06 10:25:54,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-06 10:25:54,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 10:25:54,291 INFO L130 BoogieDeclarations]: Found specification of procedure free_reports [2025-02-06 10:25:54,291 INFO L138 BoogieDeclarations]: Found implementation of procedure free_reports [2025-02-06 10:25:54,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-06 10:25:54,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-06 10:25:54,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-06 10:25:54,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-02-06 10:25:54,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-02-06 10:25:54,292 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-06 10:25:54,292 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-02-06 10:25:54,292 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-02-06 10:25:54,292 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-02-06 10:25:54,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-02-06 10:25:54,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-02-06 10:25:54,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2025-02-06 10:25:54,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2025-02-06 10:25:54,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-06 10:25:54,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-02-06 10:25:54,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-02-06 10:25:54,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-02-06 10:25:54,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2025-02-06 10:25:54,292 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2025-02-06 10:25:54,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2025-02-06 10:25:54,292 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2025-02-06 10:25:54,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2025-02-06 10:25:54,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 10:25:54,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 10:25:54,447 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 10:25:54,450 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 10:25:54,661 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L527: havoc #t~malloc12.base, #t~malloc12.offset; [2025-02-06 10:25:54,667 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L533: havoc #t~malloc13#1.base, #t~malloc13#1.offset; [2025-02-06 10:25:54,936 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L815: call ULTIMATE.dealloc(hid_open_report_~#item~0#1.base, hid_open_report_~#item~0#1.offset);havoc hid_open_report_~#item~0#1.base, hid_open_report_~#item~0#1.offset; [2025-02-06 10:25:54,960 INFO L? ?]: Removed 248 outVars from TransFormulas that were not future-live. [2025-02-06 10:25:54,961 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 10:25:54,969 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 10:25:54,969 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 10:25:54,970 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 10:25:54 BoogieIcfgContainer [2025-02-06 10:25:54,970 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 10:25:54,971 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 10:25:54,971 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 10:25:54,974 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 10:25:54,975 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 10:25:53" (1/3) ... [2025-02-06 10:25:54,975 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bbf201 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 10:25:54, skipping insertion in model container [2025-02-06 10:25:54,975 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:25:54" (2/3) ... [2025-02-06 10:25:54,975 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bbf201 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 10:25:54, skipping insertion in model container [2025-02-06 10:25:54,975 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 10:25:54" (3/3) ... [2025-02-06 10:25:54,976 INFO L128 eAbstractionObserver]: Analyzing ICFG memleaks_test23_1.i [2025-02-06 10:25:54,986 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 10:25:54,987 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG memleaks_test23_1.i that has 7 procedures, 206 locations, 1 initial locations, 2 loop locations, and 80 error locations. [2025-02-06 10:25:55,013 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 10:25:55,020 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;@4c7b89f8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 10:25:55,021 INFO L334 AbstractCegarLoop]: Starting to check reachability of 80 error locations. [2025-02-06 10:25:55,023 INFO L276 IsEmpty]: Start isEmpty. Operand has 206 states, 111 states have (on average 1.8468468468468469) internal successors, (205), 191 states have internal predecessors, (205), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2025-02-06 10:25:55,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-02-06 10:25:55,027 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:25:55,027 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:25:55,028 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2ASSERT_VIOLATIONMEMORY_FREE (and 77 more)] === [2025-02-06 10:25:55,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:25:55,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1817236037, now seen corresponding path program 1 times [2025-02-06 10:25:55,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:25:55,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1817732664] [2025-02-06 10:25:55,038 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:25:55,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:25:55,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:25:55,040 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) [2025-02-06 10:25:55,042 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 [2025-02-06 10:25:55,142 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-06 10:25:55,151 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 10:25:55,152 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:25:55,152 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:25:55,153 INFO L256 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-06 10:25:55,157 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:25:55,192 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 [2025-02-06 10:25:55,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:25:55,240 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:25:55,240 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:25:55,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817732664] [2025-02-06 10:25:55,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817732664] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:25:55,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:25:55,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 10:25:55,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864927795] [2025-02-06 10:25:55,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:25:55,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 10:25:55,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:25:55,259 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 10:25:55,259 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-06 10:25:55,261 INFO L87 Difference]: Start difference. First operand has 206 states, 111 states have (on average 1.8468468468468469) internal successors, (205), 191 states have internal predecessors, (205), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:25:55,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:25:55,762 INFO L93 Difference]: Finished difference Result 222 states and 238 transitions. [2025-02-06 10:25:55,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 10:25:55,764 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2025-02-06 10:25:55,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:25:55,768 INFO L225 Difference]: With dead ends: 222 [2025-02-06 10:25:55,769 INFO L226 Difference]: Without dead ends: 220 [2025-02-06 10:25:55,770 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-02-06 10:25:55,771 INFO L435 NwaCegarLoop]: 207 mSDtfsCounter, 10 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 844 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-06 10:25:55,772 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 844 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-06 10:25:55,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2025-02-06 10:25:55,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 213. [2025-02-06 10:25:55,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 117 states have (on average 1.8034188034188035) internal successors, (211), 196 states have internal predecessors, (211), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2025-02-06 10:25:55,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 230 transitions. [2025-02-06 10:25:55,799 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 230 transitions. Word has length 12 [2025-02-06 10:25:55,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:25:55,800 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 230 transitions. [2025-02-06 10:25:55,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:25:55,800 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 230 transitions. [2025-02-06 10:25:55,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-02-06 10:25:55,800 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:25:55,800 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:25:55,809 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-06 10:25:56,005 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 [2025-02-06 10:25:56,005 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2ASSERT_VIOLATIONMEMORY_FREE (and 77 more)] === [2025-02-06 10:25:56,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:25:56,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1817236038, now seen corresponding path program 1 times [2025-02-06 10:25:56,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:25:56,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1881852086] [2025-02-06 10:25:56,006 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:25:56,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:25:56,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:25:56,009 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) [2025-02-06 10:25:56,010 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 [2025-02-06 10:25:56,083 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-06 10:25:56,091 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 10:25:56,091 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:25:56,091 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:25:56,092 INFO L256 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-06 10:25:56,093 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:25:56,104 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 [2025-02-06 10:25:56,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:25:56,200 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:25:56,200 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:25:56,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881852086] [2025-02-06 10:25:56,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881852086] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:25:56,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:25:56,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-06 10:25:56,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617664329] [2025-02-06 10:25:56,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:25:56,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 10:25:56,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:25:56,201 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 10:25:56,201 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-02-06 10:25:56,201 INFO L87 Difference]: Start difference. First operand 213 states and 230 transitions. Second operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:25:56,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:25:56,898 INFO L93 Difference]: Finished difference Result 217 states and 232 transitions. [2025-02-06 10:25:56,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 10:25:56,901 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2025-02-06 10:25:56,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:25:56,905 INFO L225 Difference]: With dead ends: 217 [2025-02-06 10:25:56,905 INFO L226 Difference]: Without dead ends: 217 [2025-02-06 10:25:56,905 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-02-06 10:25:56,906 INFO L435 NwaCegarLoop]: 206 mSDtfsCounter, 10 mSDsluCounter, 903 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1109 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-02-06 10:25:56,906 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 1109 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-02-06 10:25:56,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2025-02-06 10:25:56,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 213. [2025-02-06 10:25:56,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 117 states have (on average 1.7863247863247864) internal successors, (209), 196 states have internal predecessors, (209), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2025-02-06 10:25:56,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 228 transitions. [2025-02-06 10:25:56,930 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 228 transitions. Word has length 12 [2025-02-06 10:25:56,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:25:56,931 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 228 transitions. [2025-02-06 10:25:56,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:25:56,931 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 228 transitions. [2025-02-06 10:25:56,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-02-06 10:25:56,931 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:25:56,931 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:25:56,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-06 10:25:57,131 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 [2025-02-06 10:25:57,132 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2ASSERT_VIOLATIONMEMORY_FREE (and 77 more)] === [2025-02-06 10:25:57,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:25:57,133 INFO L85 PathProgramCache]: Analyzing trace with hash -734920924, now seen corresponding path program 1 times [2025-02-06 10:25:57,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:25:57,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1913912442] [2025-02-06 10:25:57,133 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:25:57,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:25:57,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:25:57,135 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) [2025-02-06 10:25:57,136 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 [2025-02-06 10:25:57,185 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-06 10:25:57,191 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 10:25:57,191 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:25:57,192 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:25:57,192 INFO L256 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-06 10:25:57,193 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:25:57,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:25:57,224 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:25:57,224 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:25:57,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913912442] [2025-02-06 10:25:57,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913912442] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:25:57,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:25:57,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 10:25:57,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983457255] [2025-02-06 10:25:57,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:25:57,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 10:25:57,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:25:57,226 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 10:25:57,226 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 10:25:57,226 INFO L87 Difference]: Start difference. First operand 213 states and 228 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:25:57,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:25:57,249 INFO L93 Difference]: Finished difference Result 204 states and 218 transitions. [2025-02-06 10:25:57,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 10:25:57,249 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2025-02-06 10:25:57,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:25:57,250 INFO L225 Difference]: With dead ends: 204 [2025-02-06 10:25:57,250 INFO L226 Difference]: Without dead ends: 204 [2025-02-06 10:25:57,250 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 10:25:57,250 INFO L435 NwaCegarLoop]: 216 mSDtfsCounter, 0 mSDsluCounter, 629 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 845 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:25:57,250 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 845 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:25:57,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2025-02-06 10:25:57,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2025-02-06 10:25:57,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 113 states have (on average 1.7787610619469028) internal successors, (201), 188 states have internal predecessors, (201), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2025-02-06 10:25:57,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 218 transitions. [2025-02-06 10:25:57,256 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 218 transitions. Word has length 12 [2025-02-06 10:25:57,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:25:57,256 INFO L471 AbstractCegarLoop]: Abstraction has 204 states and 218 transitions. [2025-02-06 10:25:57,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:25:57,256 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 218 transitions. [2025-02-06 10:25:57,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-02-06 10:25:57,256 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:25:57,256 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:25:57,262 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-06 10:25:57,457 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 [2025-02-06 10:25:57,457 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2ASSERT_VIOLATIONMEMORY_FREE (and 77 more)] === [2025-02-06 10:25:57,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:25:57,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1817056777, now seen corresponding path program 1 times [2025-02-06 10:25:57,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:25:57,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [69563786] [2025-02-06 10:25:57,458 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:25:57,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:25:57,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:25:57,461 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) [2025-02-06 10:25:57,463 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 [2025-02-06 10:25:57,516 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-06 10:25:57,523 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 10:25:57,523 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:25:57,523 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:25:57,523 INFO L256 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 10:25:57,525 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:25:57,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:25:57,545 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:25:57,545 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:25:57,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69563786] [2025-02-06 10:25:57,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69563786] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:25:57,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:25:57,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 10:25:57,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794305531] [2025-02-06 10:25:57,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:25:57,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 10:25:57,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:25:57,546 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 10:25:57,546 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 10:25:57,546 INFO L87 Difference]: Start difference. First operand 204 states and 218 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 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) [2025-02-06 10:25:57,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:25:57,574 INFO L93 Difference]: Finished difference Result 205 states and 218 transitions. [2025-02-06 10:25:57,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 10:25:57,575 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 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 12 [2025-02-06 10:25:57,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:25:57,576 INFO L225 Difference]: With dead ends: 205 [2025-02-06 10:25:57,576 INFO L226 Difference]: Without dead ends: 205 [2025-02-06 10:25:57,576 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 10:25:57,577 INFO L435 NwaCegarLoop]: 208 mSDtfsCounter, 108 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 713 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:25:57,577 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 713 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:25:57,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2025-02-06 10:25:57,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 204. [2025-02-06 10:25:57,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 113 states have (on average 1.7699115044247788) internal successors, (200), 188 states have internal predecessors, (200), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2025-02-06 10:25:57,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 217 transitions. [2025-02-06 10:25:57,589 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 217 transitions. Word has length 12 [2025-02-06 10:25:57,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:25:57,590 INFO L471 AbstractCegarLoop]: Abstraction has 204 states and 217 transitions. [2025-02-06 10:25:57,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 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) [2025-02-06 10:25:57,590 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 217 transitions. [2025-02-06 10:25:57,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-02-06 10:25:57,590 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:25:57,590 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:25:57,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-06 10:25:57,790 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 [2025-02-06 10:25:57,791 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2ASSERT_VIOLATIONMEMORY_FREE (and 77 more)] === [2025-02-06 10:25:57,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:25:57,792 INFO L85 PathProgramCache]: Analyzing trace with hash -735100184, now seen corresponding path program 1 times [2025-02-06 10:25:57,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:25:57,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [794891036] [2025-02-06 10:25:57,792 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:25:57,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:25:57,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:25:57,794 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) [2025-02-06 10:25:57,796 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 [2025-02-06 10:25:57,855 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-06 10:25:57,861 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 10:25:57,861 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:25:57,861 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:25:57,862 INFO L256 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 10:25:57,862 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:25:57,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:25:57,879 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:25:57,879 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:25:57,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794891036] [2025-02-06 10:25:57,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794891036] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:25:57,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:25:57,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 10:25:57,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917494844] [2025-02-06 10:25:57,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:25:57,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 10:25:57,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:25:57,880 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 10:25:57,881 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 10:25:57,881 INFO L87 Difference]: Start difference. First operand 204 states and 217 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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) [2025-02-06 10:25:57,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:25:57,899 INFO L93 Difference]: Finished difference Result 206 states and 219 transitions. [2025-02-06 10:25:57,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 10:25:57,899 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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 12 [2025-02-06 10:25:57,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:25:57,900 INFO L225 Difference]: With dead ends: 206 [2025-02-06 10:25:57,900 INFO L226 Difference]: Without dead ends: 206 [2025-02-06 10:25:57,900 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 10:25:57,901 INFO L435 NwaCegarLoop]: 211 mSDtfsCounter, 102 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:25:57,901 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 724 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:25:57,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2025-02-06 10:25:57,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2025-02-06 10:25:57,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 115 states have (on average 1.7565217391304349) internal successors, (202), 190 states have internal predecessors, (202), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2025-02-06 10:25:57,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 219 transitions. [2025-02-06 10:25:57,910 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 219 transitions. Word has length 12 [2025-02-06 10:25:57,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:25:57,910 INFO L471 AbstractCegarLoop]: Abstraction has 206 states and 219 transitions. [2025-02-06 10:25:57,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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) [2025-02-06 10:25:57,910 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 219 transitions. [2025-02-06 10:25:57,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-02-06 10:25:57,910 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:25:57,910 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:25:57,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-02-06 10:25:58,111 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 [2025-02-06 10:25:58,111 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2ASSERT_VIOLATIONMEMORY_FREE (and 77 more)] === [2025-02-06 10:25:58,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:25:58,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1313268657, now seen corresponding path program 1 times [2025-02-06 10:25:58,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:25:58,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1395291527] [2025-02-06 10:25:58,113 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:25:58,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:25:58,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:25:58,116 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) [2025-02-06 10:25:58,117 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 [2025-02-06 10:25:58,170 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-06 10:25:58,176 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 10:25:58,176 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:25:58,176 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:25:58,178 INFO L256 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 10:25:58,178 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:25:58,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:25:58,205 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:25:58,205 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:25:58,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395291527] [2025-02-06 10:25:58,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395291527] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:25:58,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:25:58,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 10:25:58,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105476859] [2025-02-06 10:25:58,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:25:58,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 10:25:58,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:25:58,206 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 10:25:58,206 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 10:25:58,206 INFO L87 Difference]: Start difference. First operand 206 states and 219 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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) [2025-02-06 10:25:58,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:25:58,475 INFO L93 Difference]: Finished difference Result 218 states and 233 transitions. [2025-02-06 10:25:58,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 10:25:58,475 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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 13 [2025-02-06 10:25:58,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:25:58,476 INFO L225 Difference]: With dead ends: 218 [2025-02-06 10:25:58,476 INFO L226 Difference]: Without dead ends: 210 [2025-02-06 10:25:58,476 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 10:25:58,477 INFO L435 NwaCegarLoop]: 173 mSDtfsCounter, 51 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-06 10:25:58,477 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 384 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-06 10:25:58,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2025-02-06 10:25:58,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 200. [2025-02-06 10:25:58,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 110 states have (on average 1.7818181818181817) internal successors, (196), 185 states have internal predecessors, (196), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2025-02-06 10:25:58,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 212 transitions. [2025-02-06 10:25:58,481 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 212 transitions. Word has length 13 [2025-02-06 10:25:58,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:25:58,482 INFO L471 AbstractCegarLoop]: Abstraction has 200 states and 212 transitions. [2025-02-06 10:25:58,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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) [2025-02-06 10:25:58,482 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 212 transitions. [2025-02-06 10:25:58,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-02-06 10:25:58,482 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:25:58,482 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:25:58,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-02-06 10:25:58,687 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 [2025-02-06 10:25:58,687 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr49REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2ASSERT_VIOLATIONMEMORY_FREE (and 77 more)] === [2025-02-06 10:25:58,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:25:58,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1466472051, now seen corresponding path program 1 times [2025-02-06 10:25:58,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:25:58,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [921067490] [2025-02-06 10:25:58,688 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:25:58,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:25:58,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:25:58,693 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) [2025-02-06 10:25:58,694 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 [2025-02-06 10:25:58,760 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-06 10:25:58,772 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 10:25:58,772 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:25:58,772 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:25:58,777 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-06 10:25:58,778 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:25:58,883 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2025-02-06 10:25:58,883 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2025-02-06 10:25:58,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:25:58,929 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:25:58,929 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:25:58,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921067490] [2025-02-06 10:25:58,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921067490] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:25:58,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:25:58,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 10:25:58,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274579372] [2025-02-06 10:25:58,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:25:58,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 10:25:58,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:25:58,931 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 10:25:58,931 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-02-06 10:25:58,932 INFO L87 Difference]: Start difference. First operand 200 states and 212 transitions. Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 10:25:59,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:25:59,844 INFO L93 Difference]: Finished difference Result 251 states and 266 transitions. [2025-02-06 10:25:59,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 10:25:59,845 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2025-02-06 10:25:59,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:25:59,846 INFO L225 Difference]: With dead ends: 251 [2025-02-06 10:25:59,846 INFO L226 Difference]: Without dead ends: 251 [2025-02-06 10:25:59,846 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-02-06 10:25:59,847 INFO L435 NwaCegarLoop]: 134 mSDtfsCounter, 212 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-02-06 10:25:59,847 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 491 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-02-06 10:25:59,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2025-02-06 10:25:59,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 210. [2025-02-06 10:25:59,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 119 states have (on average 1.7647058823529411) internal successors, (210), 194 states have internal predecessors, (210), 8 states have call successors, (8), 7 states have call predecessors, (8), 8 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2025-02-06 10:25:59,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 228 transitions. [2025-02-06 10:25:59,854 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 228 transitions. Word has length 16 [2025-02-06 10:25:59,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:25:59,854 INFO L471 AbstractCegarLoop]: Abstraction has 210 states and 228 transitions. [2025-02-06 10:25:59,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 10:25:59,854 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 228 transitions. [2025-02-06 10:25:59,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-02-06 10:25:59,855 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:25:59,855 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:25:59,864 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-06 10:26:00,055 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 [2025-02-06 10:26:00,056 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr50REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2ASSERT_VIOLATIONMEMORY_FREE (and 77 more)] === [2025-02-06 10:26:00,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:26:00,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1466472052, now seen corresponding path program 1 times [2025-02-06 10:26:00,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:26:00,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [497635132] [2025-02-06 10:26:00,057 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:26:00,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:26:00,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:26:00,059 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) [2025-02-06 10:26:00,060 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 [2025-02-06 10:26:00,124 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-06 10:26:00,134 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 10:26:00,134 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:26:00,134 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:26:00,138 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-02-06 10:26:00,140 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:26:00,237 WARN L873 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (store |c_old(#length)| |ldv_malloc_#res.base| (select |c_#length| |ldv_malloc_#res.base|)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)))) is different from true [2025-02-06 10:26:00,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 10:26:00,298 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 [2025-02-06 10:26:00,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:26:00,358 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:26:00,358 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:26:00,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497635132] [2025-02-06 10:26:00,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497635132] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:26:00,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:26:00,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 10:26:00,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659640817] [2025-02-06 10:26:00,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:26:00,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 10:26:00,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:26:00,363 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 10:26:00,363 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=28, Unknown=1, NotChecked=10, Total=56 [2025-02-06 10:26:00,363 INFO L87 Difference]: Start difference. First operand 210 states and 228 transitions. Second operand has 8 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 10:26:01,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:26:01,125 INFO L93 Difference]: Finished difference Result 250 states and 265 transitions. [2025-02-06 10:26:01,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 10:26:01,125 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2025-02-06 10:26:01,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:26:01,126 INFO L225 Difference]: With dead ends: 250 [2025-02-06 10:26:01,126 INFO L226 Difference]: Without dead ends: 250 [2025-02-06 10:26:01,126 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=76, Unknown=1, NotChecked=18, Total=132 [2025-02-06 10:26:01,127 INFO L435 NwaCegarLoop]: 87 mSDtfsCounter, 303 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 263 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-02-06 10:26:01,127 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 250 Invalid, 762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 476 Invalid, 0 Unknown, 263 Unchecked, 0.7s Time] [2025-02-06 10:26:01,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2025-02-06 10:26:01,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 209. [2025-02-06 10:26:01,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 119 states have (on average 1.7563025210084033) internal successors, (209), 193 states have internal predecessors, (209), 8 states have call successors, (8), 7 states have call predecessors, (8), 8 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2025-02-06 10:26:01,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 227 transitions. [2025-02-06 10:26:01,131 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 227 transitions. Word has length 16 [2025-02-06 10:26:01,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:26:01,131 INFO L471 AbstractCegarLoop]: Abstraction has 209 states and 227 transitions. [2025-02-06 10:26:01,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 10:26:01,132 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 227 transitions. [2025-02-06 10:26:01,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-02-06 10:26:01,132 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:26:01,132 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] [2025-02-06 10:26:01,139 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-02-06 10:26:01,336 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 [2025-02-06 10:26:01,336 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr47REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2ASSERT_VIOLATIONMEMORY_FREE (and 77 more)] === [2025-02-06 10:26:01,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:26:01,336 INFO L85 PathProgramCache]: Analyzing trace with hash -867254433, now seen corresponding path program 1 times [2025-02-06 10:26:01,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:26:01,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1380740406] [2025-02-06 10:26:01,337 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:26:01,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:26:01,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:26:01,339 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) [2025-02-06 10:26:01,340 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 [2025-02-06 10:26:01,397 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-06 10:26:01,429 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-06 10:26:01,429 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:26:01,429 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:26:01,431 INFO L256 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 10:26:01,432 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:26:01,436 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 [2025-02-06 10:26:01,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:26:01,460 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:26:01,460 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:26:01,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380740406] [2025-02-06 10:26:01,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1380740406] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:26:01,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:26:01,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 10:26:01,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956421688] [2025-02-06 10:26:01,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:26:01,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 10:26:01,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:26:01,461 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 10:26:01,461 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 10:26:01,461 INFO L87 Difference]: Start difference. First operand 209 states and 227 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2025-02-06 10:26:01,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:26:01,855 INFO L93 Difference]: Finished difference Result 267 states and 294 transitions. [2025-02-06 10:26:01,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 10:26:01,856 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2025-02-06 10:26:01,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:26:01,857 INFO L225 Difference]: With dead ends: 267 [2025-02-06 10:26:01,857 INFO L226 Difference]: Without dead ends: 267 [2025-02-06 10:26:01,857 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 10:26:01,858 INFO L435 NwaCegarLoop]: 172 mSDtfsCounter, 69 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-06 10:26:01,858 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 641 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-06 10:26:01,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2025-02-06 10:26:01,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 239. [2025-02-06 10:26:01,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 151 states have (on average 1.7748344370860927) internal successors, (268), 223 states have internal predecessors, (268), 8 states have call successors, (8), 7 states have call predecessors, (8), 8 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2025-02-06 10:26:01,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 286 transitions. [2025-02-06 10:26:01,862 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 286 transitions. Word has length 25 [2025-02-06 10:26:01,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:26:01,862 INFO L471 AbstractCegarLoop]: Abstraction has 239 states and 286 transitions. [2025-02-06 10:26:01,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2025-02-06 10:26:01,863 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 286 transitions. [2025-02-06 10:26:01,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-02-06 10:26:01,863 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:26:01,863 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] [2025-02-06 10:26:01,869 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 [2025-02-06 10:26:02,066 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 [2025-02-06 10:26:02,067 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr48REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2ASSERT_VIOLATIONMEMORY_FREE (and 77 more)] === [2025-02-06 10:26:02,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:26:02,067 INFO L85 PathProgramCache]: Analyzing trace with hash -867254432, now seen corresponding path program 1 times [2025-02-06 10:26:02,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:26:02,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1616292710] [2025-02-06 10:26:02,067 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:26:02,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:26:02,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:26:02,069 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) [2025-02-06 10:26:02,071 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 [2025-02-06 10:26:02,144 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-06 10:26:02,159 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-06 10:26:02,160 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:26:02,160 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:26:02,163 INFO L256 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-06 10:26:02,165 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:26:02,171 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 [2025-02-06 10:26:02,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:26:02,220 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:26:02,220 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:26:02,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616292710] [2025-02-06 10:26:02,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616292710] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:26:02,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:26:02,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 10:26:02,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992300221] [2025-02-06 10:26:02,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:26:02,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 10:26:02,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:26:02,222 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 10:26:02,222 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 10:26:02,222 INFO L87 Difference]: Start difference. First operand 239 states and 286 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2025-02-06 10:26:02,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:26:02,683 INFO L93 Difference]: Finished difference Result 265 states and 292 transitions. [2025-02-06 10:26:02,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 10:26:02,683 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2025-02-06 10:26:02,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:26:02,685 INFO L225 Difference]: With dead ends: 265 [2025-02-06 10:26:02,685 INFO L226 Difference]: Without dead ends: 265 [2025-02-06 10:26:02,686 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 10:26:02,686 INFO L435 NwaCegarLoop]: 171 mSDtfsCounter, 66 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 676 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-06 10:26:02,686 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 676 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-06 10:26:02,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2025-02-06 10:26:02,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 240. [2025-02-06 10:26:02,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 153 states have (on average 1.7581699346405228) internal successors, (269), 223 states have internal predecessors, (269), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2025-02-06 10:26:02,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 290 transitions. [2025-02-06 10:26:02,693 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 290 transitions. Word has length 25 [2025-02-06 10:26:02,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:26:02,693 INFO L471 AbstractCegarLoop]: Abstraction has 240 states and 290 transitions. [2025-02-06 10:26:02,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2025-02-06 10:26:02,693 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 290 transitions. [2025-02-06 10:26:02,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-02-06 10:26:02,693 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:26:02,693 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] [2025-02-06 10:26:02,701 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-02-06 10:26:02,895 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 [2025-02-06 10:26:02,896 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2ASSERT_VIOLATIONMEMORY_FREE (and 77 more)] === [2025-02-06 10:26:02,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:26:02,897 INFO L85 PathProgramCache]: Analyzing trace with hash -207987891, now seen corresponding path program 1 times [2025-02-06 10:26:02,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:26:02,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [380766395] [2025-02-06 10:26:02,898 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:26:02,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:26:02,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:26:02,900 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) [2025-02-06 10:26:02,901 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 [2025-02-06 10:26:02,968 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-02-06 10:26:02,983 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-02-06 10:26:02,983 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:26:02,983 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:26:02,984 INFO L256 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 10:26:02,985 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:26:03,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:26:03,010 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:26:03,010 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:26:03,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380766395] [2025-02-06 10:26:03,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380766395] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:26:03,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:26:03,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 10:26:03,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486028265] [2025-02-06 10:26:03,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:26:03,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 10:26:03,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:26:03,011 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 10:26:03,011 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 10:26:03,011 INFO L87 Difference]: Start difference. First operand 240 states and 290 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-06 10:26:03,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:26:03,030 INFO L93 Difference]: Finished difference Result 240 states and 290 transitions. [2025-02-06 10:26:03,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 10:26:03,031 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 27 [2025-02-06 10:26:03,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:26:03,032 INFO L225 Difference]: With dead ends: 240 [2025-02-06 10:26:03,032 INFO L226 Difference]: Without dead ends: 240 [2025-02-06 10:26:03,032 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 10:26:03,032 INFO L435 NwaCegarLoop]: 201 mSDtfsCounter, 92 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:26:03,032 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 695 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:26:03,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2025-02-06 10:26:03,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 239. [2025-02-06 10:26:03,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 153 states have (on average 1.7516339869281046) internal successors, (268), 222 states have internal predecessors, (268), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2025-02-06 10:26:03,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 289 transitions. [2025-02-06 10:26:03,037 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 289 transitions. Word has length 27 [2025-02-06 10:26:03,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:26:03,037 INFO L471 AbstractCegarLoop]: Abstraction has 239 states and 289 transitions. [2025-02-06 10:26:03,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-06 10:26:03,038 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 289 transitions. [2025-02-06 10:26:03,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-02-06 10:26:03,038 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:26:03,038 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] [2025-02-06 10:26:03,044 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-02-06 10:26:03,238 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 [2025-02-06 10:26:03,239 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2ASSERT_VIOLATIONMEMORY_FREE (and 77 more)] === [2025-02-06 10:26:03,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:26:03,239 INFO L85 PathProgramCache]: Analyzing trace with hash 2142310036, now seen corresponding path program 1 times [2025-02-06 10:26:03,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:26:03,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1781870494] [2025-02-06 10:26:03,240 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:26:03,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:26:03,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:26:03,242 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) [2025-02-06 10:26:03,244 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 [2025-02-06 10:26:03,308 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-02-06 10:26:03,322 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-02-06 10:26:03,322 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:26:03,322 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:26:03,323 INFO L256 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 10:26:03,324 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:26:03,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:26:03,344 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:26:03,344 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:26:03,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781870494] [2025-02-06 10:26:03,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781870494] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:26:03,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:26:03,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 10:26:03,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625403964] [2025-02-06 10:26:03,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:26:03,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 10:26:03,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:26:03,345 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 10:26:03,345 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 10:26:03,346 INFO L87 Difference]: Start difference. First operand 239 states and 289 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2025-02-06 10:26:03,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:26:03,402 INFO L93 Difference]: Finished difference Result 239 states and 288 transitions. [2025-02-06 10:26:03,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 10:26:03,403 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2025-02-06 10:26:03,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:26:03,403 INFO L225 Difference]: With dead ends: 239 [2025-02-06 10:26:03,403 INFO L226 Difference]: Without dead ends: 239 [2025-02-06 10:26:03,404 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 10:26:03,404 INFO L435 NwaCegarLoop]: 190 mSDtfsCounter, 85 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 861 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:26:03,404 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 861 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:26:03,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2025-02-06 10:26:03,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2025-02-06 10:26:03,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 153 states have (on average 1.7450980392156863) internal successors, (267), 222 states have internal predecessors, (267), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2025-02-06 10:26:03,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 288 transitions. [2025-02-06 10:26:03,409 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 288 transitions. Word has length 28 [2025-02-06 10:26:03,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:26:03,409 INFO L471 AbstractCegarLoop]: Abstraction has 239 states and 288 transitions. [2025-02-06 10:26:03,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2025-02-06 10:26:03,409 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 288 transitions. [2025-02-06 10:26:03,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-02-06 10:26:03,409 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:26:03,409 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] [2025-02-06 10:26:03,417 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-02-06 10:26:03,610 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 [2025-02-06 10:26:03,610 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2ASSERT_VIOLATIONMEMORY_FREE (and 77 more)] === [2025-02-06 10:26:03,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:26:03,610 INFO L85 PathProgramCache]: Analyzing trace with hash -23404206, now seen corresponding path program 1 times [2025-02-06 10:26:03,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:26:03,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [311102075] [2025-02-06 10:26:03,611 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:26:03,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:26:03,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:26:03,613 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) [2025-02-06 10:26:03,615 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 [2025-02-06 10:26:03,702 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-02-06 10:26:03,723 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-02-06 10:26:03,724 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:26:03,724 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:26:03,728 INFO L256 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-06 10:26:03,730 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:26:03,734 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 [2025-02-06 10:26:03,746 WARN L873 $PredicateComparison]: unable to prove that (exists ((|ldv_zalloc_#t~malloc13#1.base| (_ BitVec 32))) (= (store |c_old(#valid)| |ldv_zalloc_#t~malloc13#1.base| (_ bv1 1)) |c_#valid|)) is different from true [2025-02-06 10:26:03,760 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2025-02-06 10:26:03,761 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2025-02-06 10:26:03,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:26:03,798 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:26:03,799 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:26:03,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311102075] [2025-02-06 10:26:03,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [311102075] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:26:03,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:26:03,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 10:26:03,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082591652] [2025-02-06 10:26:03,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:26:03,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 10:26:03,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:26:03,800 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 10:26:03,800 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=14, Unknown=1, NotChecked=6, Total=30 [2025-02-06 10:26:03,800 INFO L87 Difference]: Start difference. First operand 239 states and 288 transitions. Second operand has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-06 10:26:04,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:26:04,168 INFO L93 Difference]: Finished difference Result 283 states and 334 transitions. [2025-02-06 10:26:04,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 10:26:04,169 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2025-02-06 10:26:04,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:26:04,170 INFO L225 Difference]: With dead ends: 283 [2025-02-06 10:26:04,170 INFO L226 Difference]: Without dead ends: 283 [2025-02-06 10:26:04,170 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=20, Unknown=1, NotChecked=8, Total=42 [2025-02-06 10:26:04,170 INFO L435 NwaCegarLoop]: 126 mSDtfsCounter, 129 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 268 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-06 10:26:04,170 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 375 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 330 Invalid, 0 Unknown, 268 Unchecked, 0.4s Time] [2025-02-06 10:26:04,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2025-02-06 10:26:04,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 253. [2025-02-06 10:26:04,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 170 states have (on average 1.6705882352941177) internal successors, (284), 236 states have internal predecessors, (284), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2025-02-06 10:26:04,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 305 transitions. [2025-02-06 10:26:04,175 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 305 transitions. Word has length 33 [2025-02-06 10:26:04,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:26:04,175 INFO L471 AbstractCegarLoop]: Abstraction has 253 states and 305 transitions. [2025-02-06 10:26:04,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-06 10:26:04,175 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 305 transitions. [2025-02-06 10:26:04,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-02-06 10:26:04,176 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:26:04,176 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] [2025-02-06 10:26:04,184 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-02-06 10:26:04,379 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 [2025-02-06 10:26:04,380 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr44REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2ASSERT_VIOLATIONMEMORY_FREE (and 77 more)] === [2025-02-06 10:26:04,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:26:04,380 INFO L85 PathProgramCache]: Analyzing trace with hash -23404205, now seen corresponding path program 1 times [2025-02-06 10:26:04,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:26:04,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1987847392] [2025-02-06 10:26:04,380 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:26:04,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:26:04,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:26:04,387 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) [2025-02-06 10:26:04,388 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 [2025-02-06 10:26:04,467 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-02-06 10:26:04,492 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-02-06 10:26:04,492 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:26:04,492 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:26:04,494 INFO L256 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-06 10:26:04,496 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:26:04,503 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 [2025-02-06 10:26:04,512 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 [2025-02-06 10:26:04,563 WARN L873 $PredicateComparison]: unable to prove that (exists ((|ldv_zalloc_#t~malloc13#1.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_zalloc_#t~malloc13#1.base|)) (= |c_#length| (store |c_old(#length)| |ldv_zalloc_#t~malloc13#1.base| (select |c_#length| |ldv_zalloc_#t~malloc13#1.base|))))) is different from true [2025-02-06 10:26:04,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 10:26:04,596 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 [2025-02-06 10:26:04,609 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-02-06 10:26:04,609 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 [2025-02-06 10:26:04,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:26:04,702 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:26:04,703 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:26:04,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987847392] [2025-02-06 10:26:04,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987847392] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:26:04,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:26:04,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 10:26:04,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620282094] [2025-02-06 10:26:04,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:26:04,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 10:26:04,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:26:04,703 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 10:26:04,703 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=21, Unknown=1, NotChecked=8, Total=42 [2025-02-06 10:26:04,703 INFO L87 Difference]: Start difference. First operand 253 states and 305 transitions. Second operand has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-06 10:26:05,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:26:05,351 INFO L93 Difference]: Finished difference Result 304 states and 340 transitions. [2025-02-06 10:26:05,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 10:26:05,352 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2025-02-06 10:26:05,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:26:05,353 INFO L225 Difference]: With dead ends: 304 [2025-02-06 10:26:05,353 INFO L226 Difference]: Without dead ends: 304 [2025-02-06 10:26:05,353 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=37, Unknown=1, NotChecked=12, Total=72 [2025-02-06 10:26:05,354 INFO L435 NwaCegarLoop]: 122 mSDtfsCounter, 138 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 321 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-06 10:26:05,354 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 434 Invalid, 880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 542 Invalid, 0 Unknown, 321 Unchecked, 0.6s Time] [2025-02-06 10:26:05,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2025-02-06 10:26:05,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 253. [2025-02-06 10:26:05,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 170 states have (on average 1.6411764705882352) internal successors, (279), 236 states have internal predecessors, (279), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2025-02-06 10:26:05,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 300 transitions. [2025-02-06 10:26:05,359 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 300 transitions. Word has length 33 [2025-02-06 10:26:05,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:26:05,359 INFO L471 AbstractCegarLoop]: Abstraction has 253 states and 300 transitions. [2025-02-06 10:26:05,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-06 10:26:05,359 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 300 transitions. [2025-02-06 10:26:05,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2025-02-06 10:26:05,360 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:26:05,360 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] [2025-02-06 10:26:05,367 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-02-06 10:26:05,564 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 [2025-02-06 10:26:05,564 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2ASSERT_VIOLATIONMEMORY_FREE (and 77 more)] === [2025-02-06 10:26:05,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:26:05,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1451220528, now seen corresponding path program 1 times [2025-02-06 10:26:05,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:26:05,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1147315357] [2025-02-06 10:26:05,565 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:26:05,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:26:05,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:26:05,567 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) [2025-02-06 10:26:05,569 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 [2025-02-06 10:26:05,637 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-02-06 10:26:05,659 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-02-06 10:26:05,659 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:26:05,659 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:26:05,661 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 10:26:05,662 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:26:05,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:26:05,672 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:26:05,673 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:26:05,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147315357] [2025-02-06 10:26:05,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147315357] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:26:05,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:26:05,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 10:26:05,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542539666] [2025-02-06 10:26:05,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:26:05,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 10:26:05,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:26:05,674 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 10:26:05,674 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 10:26:05,674 INFO L87 Difference]: Start difference. First operand 253 states and 300 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2025-02-06 10:26:05,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:26:05,685 INFO L93 Difference]: Finished difference Result 259 states and 306 transitions. [2025-02-06 10:26:05,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 10:26:05,685 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 36 [2025-02-06 10:26:05,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:26:05,686 INFO L225 Difference]: With dead ends: 259 [2025-02-06 10:26:05,686 INFO L226 Difference]: Without dead ends: 259 [2025-02-06 10:26:05,686 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 10:26:05,687 INFO L435 NwaCegarLoop]: 199 mSDtfsCounter, 0 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:26:05,687 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 591 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:26:05,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2025-02-06 10:26:05,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 257. [2025-02-06 10:26:05,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 174 states have (on average 1.6264367816091954) internal successors, (283), 240 states have internal predecessors, (283), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2025-02-06 10:26:05,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 304 transitions. [2025-02-06 10:26:05,691 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 304 transitions. Word has length 36 [2025-02-06 10:26:05,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:26:05,691 INFO L471 AbstractCegarLoop]: Abstraction has 257 states and 304 transitions. [2025-02-06 10:26:05,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2025-02-06 10:26:05,691 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 304 transitions. [2025-02-06 10:26:05,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2025-02-06 10:26:05,692 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:26:05,692 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] [2025-02-06 10:26:05,700 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-02-06 10:26:05,892 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 [2025-02-06 10:26:05,893 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2ASSERT_VIOLATIONMEMORY_FREE (and 77 more)] === [2025-02-06 10:26:05,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:26:05,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1451221295, now seen corresponding path program 1 times [2025-02-06 10:26:05,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:26:05,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [165263099] [2025-02-06 10:26:05,894 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:26:05,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:26:05,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:26:05,896 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) [2025-02-06 10:26:05,900 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 [2025-02-06 10:26:05,990 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-02-06 10:26:06,016 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-02-06 10:26:06,017 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:26:06,017 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:26:06,019 INFO L256 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 10:26:06,020 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:26:06,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:26:06,072 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:26:06,072 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:26:06,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165263099] [2025-02-06 10:26:06,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165263099] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:26:06,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:26:06,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 10:26:06,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931349397] [2025-02-06 10:26:06,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:26:06,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 10:26:06,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:26:06,073 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 10:26:06,073 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 10:26:06,073 INFO L87 Difference]: Start difference. First operand 257 states and 304 transitions. Second operand has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2025-02-06 10:26:06,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:26:06,189 INFO L93 Difference]: Finished difference Result 255 states and 301 transitions. [2025-02-06 10:26:06,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 10:26:06,189 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 36 [2025-02-06 10:26:06,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:26:06,190 INFO L225 Difference]: With dead ends: 255 [2025-02-06 10:26:06,190 INFO L226 Difference]: Without dead ends: 255 [2025-02-06 10:26:06,190 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 10:26:06,191 INFO L435 NwaCegarLoop]: 186 mSDtfsCounter, 70 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 787 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:26:06,191 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 787 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:26:06,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2025-02-06 10:26:06,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2025-02-06 10:26:06,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 174 states have (on average 1.6091954022988506) internal successors, (280), 238 states have internal predecessors, (280), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2025-02-06 10:26:06,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 301 transitions. [2025-02-06 10:26:06,195 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 301 transitions. Word has length 36 [2025-02-06 10:26:06,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:26:06,195 INFO L471 AbstractCegarLoop]: Abstraction has 255 states and 301 transitions. [2025-02-06 10:26:06,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2025-02-06 10:26:06,195 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 301 transitions. [2025-02-06 10:26:06,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2025-02-06 10:26:06,196 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:26:06,196 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] [2025-02-06 10:26:06,205 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 [2025-02-06 10:26:06,396 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 [2025-02-06 10:26:06,396 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2ASSERT_VIOLATIONMEMORY_FREE (and 77 more)] === [2025-02-06 10:26:06,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:26:06,397 INFO L85 PathProgramCache]: Analyzing trace with hash -510601693, now seen corresponding path program 1 times [2025-02-06 10:26:06,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:26:06,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2000036240] [2025-02-06 10:26:06,397 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:26:06,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:26:06,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:26:06,399 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) [2025-02-06 10:26:06,401 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 [2025-02-06 10:26:06,475 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 41 statements into 1 equivalence classes. [2025-02-06 10:26:06,495 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-02-06 10:26:06,496 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:26:06,496 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:26:06,497 INFO L256 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 10:26:06,498 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:26:06,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:26:06,508 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:26:06,508 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:26:06,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000036240] [2025-02-06 10:26:06,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2000036240] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:26:06,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:26:06,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 10:26:06,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914326719] [2025-02-06 10:26:06,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:26:06,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 10:26:06,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:26:06,509 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 10:26:06,509 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 10:26:06,509 INFO L87 Difference]: Start difference. First operand 255 states and 301 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2025-02-06 10:26:06,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:26:06,521 INFO L93 Difference]: Finished difference Result 257 states and 303 transitions. [2025-02-06 10:26:06,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 10:26:06,522 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 41 [2025-02-06 10:26:06,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:26:06,522 INFO L225 Difference]: With dead ends: 257 [2025-02-06 10:26:06,522 INFO L226 Difference]: Without dead ends: 257 [2025-02-06 10:26:06,523 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 10:26:06,523 INFO L435 NwaCegarLoop]: 197 mSDtfsCounter, 0 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 584 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:26:06,523 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 584 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:26:06,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2025-02-06 10:26:06,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 257. [2025-02-06 10:26:06,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 176 states have (on average 1.6022727272727273) internal successors, (282), 240 states have internal predecessors, (282), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2025-02-06 10:26:06,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 303 transitions. [2025-02-06 10:26:06,527 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 303 transitions. Word has length 41 [2025-02-06 10:26:06,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:26:06,527 INFO L471 AbstractCegarLoop]: Abstraction has 257 states and 303 transitions. [2025-02-06 10:26:06,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2025-02-06 10:26:06,527 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 303 transitions. [2025-02-06 10:26:06,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2025-02-06 10:26:06,528 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:26:06,528 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] [2025-02-06 10:26:06,535 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-02-06 10:26:06,728 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 [2025-02-06 10:26:06,728 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2ASSERT_VIOLATIONMEMORY_FREE (and 77 more)] === [2025-02-06 10:26:06,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:26:06,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1351270387, now seen corresponding path program 1 times [2025-02-06 10:26:06,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:26:06,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1930335716] [2025-02-06 10:26:06,729 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:26:06,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:26:06,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:26:06,731 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) [2025-02-06 10:26:06,732 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 [2025-02-06 10:26:06,813 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-02-06 10:26:06,840 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-02-06 10:26:06,841 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:26:06,841 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:26:06,842 INFO L256 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-02-06 10:26:06,844 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:26:06,902 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2025-02-06 10:26:06,902 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2025-02-06 10:26:06,917 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2025-02-06 10:26:06,972 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2025-02-06 10:26:06,972 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2025-02-06 10:26:07,091 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2025-02-06 10:26:07,100 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 16 treesize of output 13 [2025-02-06 10:26:07,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:26:07,117 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:26:07,117 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:26:07,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930335716] [2025-02-06 10:26:07,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930335716] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:26:07,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:26:07,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-02-06 10:26:07,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678656173] [2025-02-06 10:26:07,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:26:07,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 10:26:07,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:26:07,118 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 10:26:07,118 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2025-02-06 10:26:07,118 INFO L87 Difference]: Start difference. First operand 257 states and 303 transitions. Second operand has 11 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-06 10:26:08,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:26:08,063 INFO L93 Difference]: Finished difference Result 332 states and 383 transitions. [2025-02-06 10:26:08,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-06 10:26:08,064 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 42 [2025-02-06 10:26:08,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:26:08,065 INFO L225 Difference]: With dead ends: 332 [2025-02-06 10:26:08,065 INFO L226 Difference]: Without dead ends: 332 [2025-02-06 10:26:08,065 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2025-02-06 10:26:08,065 INFO L435 NwaCegarLoop]: 97 mSDtfsCounter, 305 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 866 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 674 SdHoareTripleChecker+Invalid, 901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-02-06 10:26:08,066 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 674 Invalid, 901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 866 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-02-06 10:26:08,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2025-02-06 10:26:08,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 268. [2025-02-06 10:26:08,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 187 states have (on average 1.5989304812834224) internal successors, (299), 248 states have internal predecessors, (299), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 12 states have call predecessors, (12), 9 states have call successors, (12) [2025-02-06 10:26:08,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 320 transitions. [2025-02-06 10:26:08,071 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 320 transitions. Word has length 42 [2025-02-06 10:26:08,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:26:08,072 INFO L471 AbstractCegarLoop]: Abstraction has 268 states and 320 transitions. [2025-02-06 10:26:08,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-06 10:26:08,072 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 320 transitions. [2025-02-06 10:26:08,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2025-02-06 10:26:08,072 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:26:08,072 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] [2025-02-06 10:26:08,081 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-02-06 10:26:08,273 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 [2025-02-06 10:26:08,273 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2ASSERT_VIOLATIONMEMORY_FREE (and 77 more)] === [2025-02-06 10:26:08,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:26:08,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1351270388, now seen corresponding path program 1 times [2025-02-06 10:26:08,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:26:08,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [199110078] [2025-02-06 10:26:08,274 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:26:08,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:26:08,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:26:08,276 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:26:08,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-02-06 10:26:08,362 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-02-06 10:26:08,392 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-02-06 10:26:08,392 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:26:08,392 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:26:08,395 INFO L256 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-02-06 10:26:08,398 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:26:08,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 10:26:08,509 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 [2025-02-06 10:26:08,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 10:26:08,600 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 [2025-02-06 10:26:16,738 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2025-02-06 10:26:16,739 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2025-02-06 10:26:16,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:26:16,869 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:26:16,870 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:26:16,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199110078] [2025-02-06 10:26:16,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199110078] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:26:16,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:26:16,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-02-06 10:26:16,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410840269] [2025-02-06 10:26:16,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:26:16,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 10:26:16,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:26:16,870 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 10:26:16,870 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=79, Unknown=6, NotChecked=0, Total=110 [2025-02-06 10:26:16,871 INFO L87 Difference]: Start difference. First operand 268 states and 320 transitions. Second operand has 11 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 10:26:20,913 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-06 10:26:25,001 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-06 10:26:29,103 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-06 10:26:33,557 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-06 10:26:37,964 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-06 10:26:42,108 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-06 10:26:46,166 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-06 10:26:50,528 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-06 10:26:54,554 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-06 10:26:58,614 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-06 10:27:02,645 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-06 10:27:02,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:27:02,792 INFO L93 Difference]: Finished difference Result 292 states and 340 transitions. [2025-02-06 10:27:02,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-06 10:27:02,792 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 42 [2025-02-06 10:27:02,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:27:02,793 INFO L225 Difference]: With dead ends: 292 [2025-02-06 10:27:02,793 INFO L226 Difference]: Without dead ends: 292 [2025-02-06 10:27:02,794 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=85, Invalid=287, Unknown=8, NotChecked=0, Total=380 [2025-02-06 10:27:02,794 INFO L435 NwaCegarLoop]: 75 mSDtfsCounter, 294 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 883 mSolverCounterSat, 51 mSolverCounterUnsat, 119 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 1053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 883 IncrementalHoareTripleChecker+Invalid, 119 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45.7s IncrementalHoareTripleChecker+Time [2025-02-06 10:27:02,794 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 465 Invalid, 1053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 883 Invalid, 119 Unknown, 0 Unchecked, 45.7s Time] [2025-02-06 10:27:02,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2025-02-06 10:27:02,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 266. [2025-02-06 10:27:02,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 187 states have (on average 1.5775401069518717) internal successors, (295), 246 states have internal predecessors, (295), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 12 states have call predecessors, (12), 9 states have call successors, (12) [2025-02-06 10:27:02,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 316 transitions. [2025-02-06 10:27:02,798 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 316 transitions. Word has length 42 [2025-02-06 10:27:02,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:27:02,798 INFO L471 AbstractCegarLoop]: Abstraction has 266 states and 316 transitions. [2025-02-06 10:27:02,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 10:27:02,799 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 316 transitions. [2025-02-06 10:27:02,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2025-02-06 10:27:02,799 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:27:02,799 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:27:02,808 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2025-02-06 10:27:02,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:27:03,000 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2ASSERT_VIOLATIONMEMORY_FREE (and 77 more)] === [2025-02-06 10:27:03,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:27:03,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1060290396, now seen corresponding path program 1 times [2025-02-06 10:27:03,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:27:03,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1972258339] [2025-02-06 10:27:03,000 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:27:03,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:27:03,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:27:03,003 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) [2025-02-06 10:27:03,004 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 [2025-02-06 10:27:03,087 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-02-06 10:27:03,107 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-02-06 10:27:03,107 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:27:03,107 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:27:03,109 INFO L256 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 10:27:03,110 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:27:03,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:27:03,121 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:27:03,121 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:27:03,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972258339] [2025-02-06 10:27:03,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972258339] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:27:03,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:27:03,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 10:27:03,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891649082] [2025-02-06 10:27:03,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:27:03,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 10:27:03,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:27:03,122 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 10:27:03,122 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 10:27:03,122 INFO L87 Difference]: Start difference. First operand 266 states and 316 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2025-02-06 10:27:03,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:27:03,135 INFO L93 Difference]: Finished difference Result 268 states and 317 transitions. [2025-02-06 10:27:03,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 10:27:03,135 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 43 [2025-02-06 10:27:03,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:27:03,136 INFO L225 Difference]: With dead ends: 268 [2025-02-06 10:27:03,136 INFO L226 Difference]: Without dead ends: 268 [2025-02-06 10:27:03,136 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 10:27:03,138 INFO L435 NwaCegarLoop]: 195 mSDtfsCounter, 0 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:27:03,138 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 579 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:27:03,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2025-02-06 10:27:03,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 268. [2025-02-06 10:27:03,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 189 states have (on average 1.566137566137566) internal successors, (296), 248 states have internal predecessors, (296), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 12 states have call predecessors, (12), 9 states have call successors, (12) [2025-02-06 10:27:03,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 317 transitions. [2025-02-06 10:27:03,146 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 317 transitions. Word has length 43 [2025-02-06 10:27:03,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:27:03,146 INFO L471 AbstractCegarLoop]: Abstraction has 268 states and 317 transitions. [2025-02-06 10:27:03,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2025-02-06 10:27:03,146 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 317 transitions. [2025-02-06 10:27:03,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2025-02-06 10:27:03,146 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:27:03,146 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] [2025-02-06 10:27:03,157 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-02-06 10:27:03,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:27:03,352 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting free_reportsErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2ASSERT_VIOLATIONMEMORY_FREE (and 77 more)] === [2025-02-06 10:27:03,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:27:03,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1032166694, now seen corresponding path program 1 times [2025-02-06 10:27:03,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:27:03,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1817320987] [2025-02-06 10:27:03,353 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:27:03,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:27:03,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:27:03,358 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:27:03,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-02-06 10:27:03,468 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-02-06 10:27:03,503 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-02-06 10:27:03,503 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:27:03,503 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:27:03,506 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 42 conjuncts are in the unsatisfiable core [2025-02-06 10:27:03,512 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:27:03,533 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 [2025-02-06 10:27:03,638 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-06 10:27:03,706 INFO L349 Elim1Store]: treesize reduction 74, result has 29.5 percent of original size [2025-02-06 10:27:03,706 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 32 treesize of output 44 [2025-02-06 10:27:03,750 INFO L349 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2025-02-06 10:27:03,751 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 19 treesize of output 11 [2025-02-06 10:27:03,839 INFO L349 Elim1Store]: treesize reduction 74, result has 29.5 percent of original size [2025-02-06 10:27:03,839 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 32 treesize of output 44 [2025-02-06 10:27:03,962 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 27 [2025-02-06 10:27:04,040 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 27 [2025-02-06 10:27:04,199 INFO L349 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2025-02-06 10:27:04,199 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 38 [2025-02-06 10:27:04,252 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-06 10:27:04,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:27:04,331 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:27:04,332 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:27:04,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817320987] [2025-02-06 10:27:04,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817320987] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:27:04,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:27:04,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2025-02-06 10:27:04,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551912807] [2025-02-06 10:27:04,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:27:04,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-06 10:27:04,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:27:04,333 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-06 10:27:04,333 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2025-02-06 10:27:04,333 INFO L87 Difference]: Start difference. First operand 268 states and 317 transitions. Second operand has 18 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 10:27:06,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:27:06,461 INFO L93 Difference]: Finished difference Result 422 states and 492 transitions. [2025-02-06 10:27:06,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-02-06 10:27:06,463 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 45 [2025-02-06 10:27:06,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:27:06,464 INFO L225 Difference]: With dead ends: 422 [2025-02-06 10:27:06,464 INFO L226 Difference]: Without dead ends: 422 [2025-02-06 10:27:06,464 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=156, Invalid=966, Unknown=0, NotChecked=0, Total=1122 [2025-02-06 10:27:06,465 INFO L435 NwaCegarLoop]: 96 mSDtfsCounter, 457 mSDsluCounter, 970 mSDsCounter, 0 mSdLazyCounter, 1499 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 1066 SdHoareTripleChecker+Invalid, 1539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-02-06 10:27:06,465 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [459 Valid, 1066 Invalid, 1539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1499 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-02-06 10:27:06,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2025-02-06 10:27:06,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 350. [2025-02-06 10:27:06,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 265 states have (on average 1.5773584905660378) internal successors, (418), 326 states have internal predecessors, (418), 12 states have call successors, (12), 10 states have call predecessors, (12), 11 states have return successors, (17), 13 states have call predecessors, (17), 12 states have call successors, (17) [2025-02-06 10:27:06,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 447 transitions. [2025-02-06 10:27:06,478 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 447 transitions. Word has length 45 [2025-02-06 10:27:06,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:27:06,478 INFO L471 AbstractCegarLoop]: Abstraction has 350 states and 447 transitions. [2025-02-06 10:27:06,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 10:27:06,478 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 447 transitions. [2025-02-06 10:27:06,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2025-02-06 10:27:06,478 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:27:06,478 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] [2025-02-06 10:27:06,486 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-02-06 10:27:06,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:27:06,679 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting free_reportsErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2ASSERT_VIOLATIONMEMORY_FREE (and 77 more)] === [2025-02-06 10:27:06,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:27:06,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1032166693, now seen corresponding path program 1 times [2025-02-06 10:27:06,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:27:06,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2138553440] [2025-02-06 10:27:06,680 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:27:06,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:27:06,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:27:06,682 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:27:06,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-02-06 10:27:06,771 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-02-06 10:27:06,807 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-02-06 10:27:06,807 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:27:06,807 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:27:06,811 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 52 conjuncts are in the unsatisfiable core [2025-02-06 10:27:06,814 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:27:06,830 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 [2025-02-06 10:27:06,834 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 [2025-02-06 10:27:06,988 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-02-06 10:27:06,997 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-06 10:27:07,033 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2025-02-06 10:27:07,033 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 21 [2025-02-06 10:27:07,056 INFO L349 Elim1Store]: treesize reduction 26, result has 33.3 percent of original size [2025-02-06 10:27:07,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 26 [2025-02-06 10:27:07,083 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2025-02-06 10:27:11,161 INFO L349 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2025-02-06 10:27:11,162 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 1 case distinctions, treesize of input 16 treesize of output 26 [2025-02-06 10:27:11,266 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2025-02-06 10:27:11,266 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 37 [2025-02-06 10:27:11,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2025-02-06 10:27:11,334 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2025-02-06 10:27:11,334 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2025-02-06 10:27:11,340 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2025-02-06 10:27:11,589 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2025-02-06 10:27:11,590 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 74 treesize of output 69 [2025-02-06 10:27:11,623 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2025-02-06 10:27:11,704 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2025-02-06 10:27:11,704 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 19 [2025-02-06 10:27:12,114 INFO L349 Elim1Store]: treesize reduction 15, result has 37.5 percent of original size [2025-02-06 10:27:12,114 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 11 treesize of output 9 [2025-02-06 10:27:12,547 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 21 [2025-02-06 10:27:12,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:27:12,695 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:27:12,695 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:27:12,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138553440] [2025-02-06 10:27:12,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138553440] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:27:12,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:27:12,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2025-02-06 10:27:12,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411468999] [2025-02-06 10:27:12,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:27:12,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-06 10:27:12,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:27:12,696 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-06 10:27:12,696 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=298, Unknown=2, NotChecked=0, Total=342 [2025-02-06 10:27:12,696 INFO L87 Difference]: Start difference. First operand 350 states and 447 transitions. Second operand has 19 states, 15 states have (on average 2.533333333333333) internal successors, (38), 16 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 10:27:20,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-06 10:27:20,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:27:20,542 INFO L93 Difference]: Finished difference Result 455 states and 535 transitions. [2025-02-06 10:27:20,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-02-06 10:27:20,545 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 15 states have (on average 2.533333333333333) internal successors, (38), 16 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 45 [2025-02-06 10:27:20,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:27:20,547 INFO L225 Difference]: With dead ends: 455 [2025-02-06 10:27:20,547 INFO L226 Difference]: Without dead ends: 455 [2025-02-06 10:27:20,547 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=107, Invalid=818, Unknown=5, NotChecked=0, Total=930 [2025-02-06 10:27:20,548 INFO L435 NwaCegarLoop]: 114 mSDtfsCounter, 326 mSDsluCounter, 1161 mSDsCounter, 0 mSdLazyCounter, 1925 mSolverCounterSat, 22 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 1275 SdHoareTripleChecker+Invalid, 1953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1925 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:27:20,548 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [326 Valid, 1275 Invalid, 1953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1925 Invalid, 6 Unknown, 0 Unchecked, 7.1s Time] [2025-02-06 10:27:20,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2025-02-06 10:27:20,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 387. [2025-02-06 10:27:20,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 295 states have (on average 1.576271186440678) internal successors, (465), 359 states have internal predecessors, (465), 15 states have call successors, (15), 13 states have call predecessors, (15), 15 states have return successors, (21), 14 states have call predecessors, (21), 15 states have call successors, (21) [2025-02-06 10:27:20,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 501 transitions. [2025-02-06 10:27:20,555 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 501 transitions. Word has length 45 [2025-02-06 10:27:20,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:27:20,555 INFO L471 AbstractCegarLoop]: Abstraction has 387 states and 501 transitions. [2025-02-06 10:27:20,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 15 states have (on average 2.533333333333333) internal successors, (38), 16 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 10:27:20,555 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 501 transitions. [2025-02-06 10:27:20,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2025-02-06 10:27:20,556 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:27:20,556 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] [2025-02-06 10:27:20,563 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2025-02-06 10:27:20,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:27:20,760 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2ASSERT_VIOLATIONMEMORY_FREE (and 77 more)] === [2025-02-06 10:27:20,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:27:20,760 INFO L85 PathProgramCache]: Analyzing trace with hash 2096545869, now seen corresponding path program 1 times [2025-02-06 10:27:20,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 10:27:20,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1886098001] [2025-02-06 10:27:20,761 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:27:20,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:27:20,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:27:20,763 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:27:20,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-02-06 10:27:20,866 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-02-06 10:27:20,931 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-02-06 10:27:20,932 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:27:20,932 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:27:20,936 INFO L256 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 47 conjuncts are in the unsatisfiable core [2025-02-06 10:27:20,940 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:27:21,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 10:27:21,043 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 16 treesize of output 11 [2025-02-06 10:27:21,125 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2025-02-06 10:27:21,125 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2025-02-06 10:27:21,140 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 [2025-02-06 10:27:21,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 10:27:21,312 INFO L349 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2025-02-06 10:27:21,312 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 32 [2025-02-06 10:27:21,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 10:27:21,319 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-02-06 10:27:21,944 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-06 10:27:21,944 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-06 10:27:21,945 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-06 10:27:21,945 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 33 [2025-02-06 10:27:22,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 61 [2025-02-06 10:27:24,249 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 45 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 99 [2025-02-06 10:27:28,608 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 91 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 119 [2025-02-06 10:27:33,408 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 55 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 54 [2025-02-06 10:27:33,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:27:33,469 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:27:33,469 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 10:27:33,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886098001] [2025-02-06 10:27:33,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1886098001] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:27:33,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:27:33,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2025-02-06 10:27:33,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939986691] [2025-02-06 10:27:33,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:27:33,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-06 10:27:33,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 10:27:33,470 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-06 10:27:33,470 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=220, Unknown=5, NotChecked=0, Total=272 [2025-02-06 10:27:33,470 INFO L87 Difference]: Start difference. First operand 387 states and 501 transitions. Second operand has 17 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3)