./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test4-2.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/uthash-2.0.2/uthash_BER_nondet_test4-2.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 6c763f0e5b490114d32e3c1ec14f736caee058b985a7ee61f4d14ad6758e2996 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 12:07:56,762 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 12:07:56,821 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-06 12:07:56,830 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 12:07:56,830 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 12:07:56,847 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 12:07:56,848 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 12:07:56,848 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 12:07:56,848 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 12:07:56,848 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 12:07:56,848 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 12:07:56,849 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 12:07:56,849 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 12:07:56,849 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 12:07:56,851 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 12:07:56,851 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 12:07:56,851 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 12:07:56,851 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 12:07:56,851 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 12:07:56,851 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 12:07:56,851 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-06 12:07:56,852 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-06 12:07:56,852 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-06 12:07:56,852 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 12:07:56,852 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-06 12:07:56,852 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 12:07:56,852 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 12:07:56,852 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 12:07:56,852 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 12:07:56,852 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 12:07:56,853 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 12:07:56,853 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 12:07:56,853 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 12:07:56,853 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 12:07:56,854 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 12:07:56,854 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 12:07:56,854 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 12:07:56,854 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 12:07:56,854 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 12:07:56,854 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 12:07:56,854 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 12:07:56,854 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 12:07:56,854 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 -> 6c763f0e5b490114d32e3c1ec14f736caee058b985a7ee61f4d14ad6758e2996 [2025-02-06 12:07:57,104 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 12:07:57,113 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 12:07:57,116 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 12:07:57,118 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 12:07:57,118 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 12:07:57,119 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test4-2.i [2025-02-06 12:07:58,376 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5712f2eef/26dbf0e7ea564f9eaf0ca7396806369d/FLAGdec403c1c [2025-02-06 12:07:58,713 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 12:07:58,714 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test4-2.i [2025-02-06 12:07:58,733 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5712f2eef/26dbf0e7ea564f9eaf0ca7396806369d/FLAGdec403c1c [2025-02-06 12:07:58,746 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5712f2eef/26dbf0e7ea564f9eaf0ca7396806369d [2025-02-06 12:07:58,748 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 12:07:58,751 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 12:07:58,753 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 12:07:58,753 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 12:07:58,756 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 12:07:58,757 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:07:58" (1/1) ... [2025-02-06 12:07:58,760 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11d7d467 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:07:58, skipping insertion in model container [2025-02-06 12:07:58,760 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:07:58" (1/1) ... [2025-02-06 12:07:58,802 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 12:07:59,189 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:07:59,227 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 12:07:59,233 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 12:07:59,238 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 12:07:59,251 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 12:07:59,285 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 12:07:59,287 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 12:07:59,291 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 12:07:59,301 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 12:07:59,315 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 12:07:59,318 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 12:07:59,321 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 12:07:59,322 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 12:07:59,324 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 12:07:59,327 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 12:07:59,330 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 12:07:59,347 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:07:59,358 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 12:07:59,359 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3738f79a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:07:59, skipping insertion in model container [2025-02-06 12:07:59,359 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 12:07:59,359 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-02-06 12:07:59,363 INFO L158 Benchmark]: Toolchain (without parser) took 609.67ms. Allocated memory is still 167.8MB. Free memory was 120.5MB in the beginning and 99.6MB in the end (delta: 20.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-02-06 12:07:59,363 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 201.3MB. Free memory is still 119.2MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 12:07:59,363 INFO L158 Benchmark]: CACSL2BoogieTranslator took 607.13ms. Allocated memory is still 167.8MB. Free memory was 120.1MB in the beginning and 99.6MB in the end (delta: 20.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-02-06 12:07:59,364 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 201.3MB. Free memory is still 119.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 607.13ms. Allocated memory is still 167.8MB. Free memory was 120.1MB in the beginning and 99.6MB in the end (delta: 20.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 754]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test4-2.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 6c763f0e5b490114d32e3c1ec14f736caee058b985a7ee61f4d14ad6758e2996 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 12:08:01,431 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 12:08:01,529 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-02-06 12:08:01,538 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 12:08:01,538 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 12:08:01,569 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 12:08:01,570 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 12:08:01,570 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 12:08:01,571 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 12:08:01,571 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 12:08:01,571 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 12:08:01,572 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 12:08:01,572 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 12:08:01,573 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 12:08:01,573 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 12:08:01,573 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 12:08:01,573 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 12:08:01,573 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 12:08:01,573 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 12:08:01,573 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 12:08:01,573 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-06 12:08:01,573 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-06 12:08:01,573 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-06 12:08:01,573 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 12:08:01,573 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-06 12:08:01,573 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-02-06 12:08:01,573 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-02-06 12:08:01,574 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 12:08:01,574 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 12:08:01,574 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 12:08:01,574 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 12:08:01,574 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 12:08:01,574 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 12:08:01,574 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 12:08:01,574 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 12:08:01,574 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 12:08:01,574 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 12:08:01,574 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 12:08:01,574 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-02-06 12:08:01,575 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-02-06 12:08:01,575 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 12:08:01,575 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 12:08:01,576 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 12:08:01,576 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 12:08:01,576 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 -> 6c763f0e5b490114d32e3c1ec14f736caee058b985a7ee61f4d14ad6758e2996 [2025-02-06 12:08:01,872 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 12:08:01,878 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 12:08:01,880 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 12:08:01,881 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 12:08:01,881 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 12:08:01,883 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test4-2.i [2025-02-06 12:08:03,219 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a36c5b02e/48eebc6c8cb7400ab09e2444f598bff9/FLAG55b7f60f9 [2025-02-06 12:08:03,590 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 12:08:03,591 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test4-2.i [2025-02-06 12:08:03,615 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a36c5b02e/48eebc6c8cb7400ab09e2444f598bff9/FLAG55b7f60f9 [2025-02-06 12:08:03,638 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a36c5b02e/48eebc6c8cb7400ab09e2444f598bff9 [2025-02-06 12:08:03,641 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 12:08:03,642 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 12:08:03,643 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 12:08:03,644 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 12:08:03,648 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 12:08:03,648 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:08:03" (1/1) ... [2025-02-06 12:08:03,651 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75668545 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:08:03, skipping insertion in model container [2025-02-06 12:08:03,651 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:08:03" (1/1) ... [2025-02-06 12:08:03,692 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 12:08:04,036 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 12:08:04,074 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 12:08:04,082 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 12:08:04,090 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 12:08:04,101 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 12:08:04,135 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 12:08:04,138 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 12:08:04,140 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 12:08:04,145 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 12:08:04,158 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 12:08:04,159 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 12:08:04,162 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 12:08:04,163 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 12:08:04,164 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 12:08:04,164 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 12:08:04,167 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 12:08:04,174 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:08:04,192 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-02-06 12:08:04,211 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 12:08:04,244 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 12:08:04,257 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 12:08:04,259 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 12:08:04,264 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 12:08:04,270 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 12:08:04,289 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 12:08:04,291 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 12:08:04,292 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 12:08:04,300 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 12:08:04,314 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 12:08:04,315 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 12:08:04,317 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 12:08:04,318 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 12:08:04,318 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 12:08:04,319 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 12:08:04,322 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 12:08:04,329 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:08:04,334 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 12:08:04,435 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:08:04,474 INFO L204 MainTranslator]: Completed translation [2025-02-06 12:08:04,474 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:08:04 WrapperNode [2025-02-06 12:08:04,474 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 12:08:04,475 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 12:08:04,475 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 12:08:04,475 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 12:08:04,480 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:08:04" (1/1) ... [2025-02-06 12:08:04,508 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:08:04" (1/1) ... [2025-02-06 12:08:04,560 INFO L138 Inliner]: procedures = 179, calls = 377, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1258 [2025-02-06 12:08:04,561 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 12:08:04,561 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 12:08:04,561 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 12:08:04,561 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 12:08:04,570 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:08:04" (1/1) ... [2025-02-06 12:08:04,571 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:08:04" (1/1) ... [2025-02-06 12:08:04,591 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:08:04" (1/1) ... [2025-02-06 12:08:04,718 INFO L175 MemorySlicer]: Split 357 memory accesses to 2 slices as follows [2, 355]. 99 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 90 writes are split as follows [0, 90]. [2025-02-06 12:08:04,719 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:08:04" (1/1) ... [2025-02-06 12:08:04,719 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:08:04" (1/1) ... [2025-02-06 12:08:04,783 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:08:04" (1/1) ... [2025-02-06 12:08:04,788 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:08:04" (1/1) ... [2025-02-06 12:08:04,797 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:08:04" (1/1) ... [2025-02-06 12:08:04,801 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:08:04" (1/1) ... [2025-02-06 12:08:04,809 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 12:08:04,810 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 12:08:04,810 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 12:08:04,810 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 12:08:04,811 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:08:04" (1/1) ... [2025-02-06 12:08:04,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 12:08:04,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:08:04,842 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 12:08:04,845 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 12:08:04,870 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2025-02-06 12:08:04,871 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2025-02-06 12:08:04,871 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-02-06 12:08:04,871 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-02-06 12:08:04,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-02-06 12:08:04,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-02-06 12:08:04,871 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-02-06 12:08:04,872 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-02-06 12:08:04,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-06 12:08:04,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 12:08:04,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-06 12:08:04,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-06 12:08:04,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-06 12:08:04,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-02-06 12:08:04,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-06 12:08:04,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-02-06 12:08:04,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-02-06 12:08:04,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-02-06 12:08:04,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-02-06 12:08:04,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 12:08:04,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 12:08:05,162 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 12:08:05,164 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 12:08:09,731 INFO L? ?]: Removed 1535 outVars from TransFormulas that were not future-live. [2025-02-06 12:08:09,731 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 12:08:09,783 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 12:08:09,784 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 12:08:09,784 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 12:08:09 BoogieIcfgContainer [2025-02-06 12:08:09,784 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 12:08:09,787 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 12:08:09,787 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 12:08:09,792 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 12:08:09,792 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 12:08:03" (1/3) ... [2025-02-06 12:08:09,793 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21b62093 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 12:08:09, skipping insertion in model container [2025-02-06 12:08:09,793 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:08:04" (2/3) ... [2025-02-06 12:08:09,793 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21b62093 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 12:08:09, skipping insertion in model container [2025-02-06 12:08:09,793 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 12:08:09" (3/3) ... [2025-02-06 12:08:09,795 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_BER_nondet_test4-2.i [2025-02-06 12:08:09,809 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 12:08:09,811 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_BER_nondet_test4-2.i that has 3 procedures, 1443 locations, 1 initial locations, 41 loop locations, and 733 error locations. [2025-02-06 12:08:09,882 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 12:08:09,897 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;@998f91e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 12:08:09,898 INFO L334 AbstractCegarLoop]: Starting to check reachability of 733 error locations. [2025-02-06 12:08:09,908 INFO L276 IsEmpty]: Start isEmpty. Operand has 1438 states, 703 states have (on average 2.2233285917496444) internal successors, (1563), 1430 states have internal predecessors, (1563), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-06 12:08:09,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-02-06 12:08:09,915 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:08:09,915 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-02-06 12:08:09,915 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-02-06 12:08:09,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:08:09,920 INFO L85 PathProgramCache]: Analyzing trace with hash 49436455, now seen corresponding path program 1 times [2025-02-06 12:08:09,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:08:09,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [885964551] [2025-02-06 12:08:09,930 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:08:09,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:08:09,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:08:09,934 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 12:08:09,936 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 12:08:10,105 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-06 12:08:10,113 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-06 12:08:10,114 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:08:10,114 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:08:10,119 INFO L256 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-06 12:08:10,123 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:08:10,152 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 12:08:10,153 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:08:10,154 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:08:10,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885964551] [2025-02-06 12:08:10,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885964551] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:08:10,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:08:10,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 12:08:10,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758652096] [2025-02-06 12:08:10,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:08:10,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:08:10,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:08:10,181 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:08:10,181 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:08:10,185 INFO L87 Difference]: Start difference. First operand has 1438 states, 703 states have (on average 2.2233285917496444) internal successors, (1563), 1430 states have internal predecessors, (1563), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:08:12,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:08:12,234 INFO L93 Difference]: Finished difference Result 1628 states and 1707 transitions. [2025-02-06 12:08:12,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:08:12,236 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2025-02-06 12:08:12,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:08:12,257 INFO L225 Difference]: With dead ends: 1628 [2025-02-06 12:08:12,257 INFO L226 Difference]: Without dead ends: 1625 [2025-02-06 12:08:12,259 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:08:12,262 INFO L435 NwaCegarLoop]: 1389 mSDtfsCounter, 219 mSDsluCounter, 761 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 2150 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-02-06 12:08:12,262 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 2150 Invalid, 826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 826 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-02-06 12:08:12,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1625 states. [2025-02-06 12:08:12,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1625 to 1434. [2025-02-06 12:08:12,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1434 states, 710 states have (on average 2.112676056338028) internal successors, (1500), 1426 states have internal predecessors, (1500), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-06 12:08:12,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1434 states to 1434 states and 1512 transitions. [2025-02-06 12:08:12,363 INFO L78 Accepts]: Start accepts. Automaton has 1434 states and 1512 transitions. Word has length 4 [2025-02-06 12:08:12,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:08:12,364 INFO L471 AbstractCegarLoop]: Abstraction has 1434 states and 1512 transitions. [2025-02-06 12:08:12,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:08:12,364 INFO L276 IsEmpty]: Start isEmpty. Operand 1434 states and 1512 transitions. [2025-02-06 12:08:12,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-02-06 12:08:12,364 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:08:12,364 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-06 12:08:12,372 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-06 12:08:12,565 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 12:08:12,566 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr731REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-02-06 12:08:12,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:08:12,566 INFO L85 PathProgramCache]: Analyzing trace with hash 265399992, now seen corresponding path program 1 times [2025-02-06 12:08:12,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:08:12,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [501486094] [2025-02-06 12:08:12,567 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:08:12,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:08:12,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:08:12,569 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 12:08:12,570 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 12:08:12,706 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 12:08:12,710 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 12:08:12,711 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:08:12,711 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:08:12,713 INFO L256 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 12:08:12,715 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:08:12,740 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 12:08:12,748 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 12:08:12,749 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:08:12,749 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:08:12,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501486094] [2025-02-06 12:08:12,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501486094] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:08:12,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:08:12,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 12:08:12,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717591384] [2025-02-06 12:08:12,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:08:12,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:08:12,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:08:12,751 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:08:12,751 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:08:12,751 INFO L87 Difference]: Start difference. First operand 1434 states and 1512 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:08:14,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:08:14,777 INFO L93 Difference]: Finished difference Result 1340 states and 1416 transitions. [2025-02-06 12:08:14,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:08:14,778 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2025-02-06 12:08:14,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:08:14,783 INFO L225 Difference]: With dead ends: 1340 [2025-02-06 12:08:14,783 INFO L226 Difference]: Without dead ends: 1340 [2025-02-06 12:08:14,784 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:08:14,784 INFO L435 NwaCegarLoop]: 776 mSDtfsCounter, 1036 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 839 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1042 SdHoareTripleChecker+Valid, 887 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-02-06 12:08:14,785 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1042 Valid, 887 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 839 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-02-06 12:08:14,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1340 states. [2025-02-06 12:08:14,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1340 to 1340. [2025-02-06 12:08:14,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1340 states, 710 states have (on average 1.9774647887323944) internal successors, (1404), 1332 states have internal predecessors, (1404), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-06 12:08:14,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1340 states to 1340 states and 1416 transitions. [2025-02-06 12:08:14,813 INFO L78 Accepts]: Start accepts. Automaton has 1340 states and 1416 transitions. Word has length 6 [2025-02-06 12:08:14,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:08:14,813 INFO L471 AbstractCegarLoop]: Abstraction has 1340 states and 1416 transitions. [2025-02-06 12:08:14,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:08:14,813 INFO L276 IsEmpty]: Start isEmpty. Operand 1340 states and 1416 transitions. [2025-02-06 12:08:14,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-02-06 12:08:14,814 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:08:14,814 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-06 12:08:14,823 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-06 12:08:15,014 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 12:08:15,015 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr732REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-02-06 12:08:15,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:08:15,015 INFO L85 PathProgramCache]: Analyzing trace with hash 265399993, now seen corresponding path program 1 times [2025-02-06 12:08:15,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:08:15,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2105542205] [2025-02-06 12:08:15,016 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:08:15,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:08:15,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:08:15,019 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 12:08:15,020 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 12:08:15,133 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 12:08:15,139 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 12:08:15,139 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:08:15,139 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:08:15,140 INFO L256 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 12:08:15,142 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:08:15,150 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 12:08:15,168 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 12:08:15,169 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:08:15,169 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:08:15,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105542205] [2025-02-06 12:08:15,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2105542205] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:08:15,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:08:15,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 12:08:15,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711602298] [2025-02-06 12:08:15,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:08:15,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:08:15,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:08:15,171 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:08:15,171 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:08:15,171 INFO L87 Difference]: Start difference. First operand 1340 states and 1416 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:08:17,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:08:17,521 INFO L93 Difference]: Finished difference Result 1664 states and 1760 transitions. [2025-02-06 12:08:17,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:08:17,521 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2025-02-06 12:08:17,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:08:17,527 INFO L225 Difference]: With dead ends: 1664 [2025-02-06 12:08:17,528 INFO L226 Difference]: Without dead ends: 1664 [2025-02-06 12:08:17,528 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:08:17,531 INFO L435 NwaCegarLoop]: 1142 mSDtfsCounter, 527 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 881 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 527 SdHoareTripleChecker+Valid, 1698 SdHoareTripleChecker+Invalid, 906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2025-02-06 12:08:17,531 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [527 Valid, 1698 Invalid, 906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 881 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2025-02-06 12:08:17,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1664 states. [2025-02-06 12:08:17,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1664 to 1512. [2025-02-06 12:08:17,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1512 states, 892 states have (on average 1.938340807174888) internal successors, (1729), 1504 states have internal predecessors, (1729), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-06 12:08:17,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1512 states to 1512 states and 1741 transitions. [2025-02-06 12:08:17,565 INFO L78 Accepts]: Start accepts. Automaton has 1512 states and 1741 transitions. Word has length 6 [2025-02-06 12:08:17,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:08:17,565 INFO L471 AbstractCegarLoop]: Abstraction has 1512 states and 1741 transitions. [2025-02-06 12:08:17,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:08:17,566 INFO L276 IsEmpty]: Start isEmpty. Operand 1512 states and 1741 transitions. [2025-02-06 12:08:17,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-02-06 12:08:17,566 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:08:17,566 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-06 12:08:17,576 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 12:08:17,766 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 12:08:17,767 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr111REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-02-06 12:08:17,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:08:17,767 INFO L85 PathProgramCache]: Analyzing trace with hash 264099163, now seen corresponding path program 1 times [2025-02-06 12:08:17,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:08:17,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1156765826] [2025-02-06 12:08:17,768 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:08:17,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:08:17,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:08:17,770 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 12:08:17,772 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 12:08:17,877 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 12:08:17,881 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 12:08:17,881 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:08:17,881 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:08:17,883 INFO L256 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 12:08:17,884 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:08:17,931 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 12:08:17,934 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:08:17,934 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:08:17,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156765826] [2025-02-06 12:08:17,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156765826] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:08:17,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:08:17,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:08:17,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466668214] [2025-02-06 12:08:17,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:08:17,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:08:17,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:08:17,936 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:08:17,936 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:08:17,936 INFO L87 Difference]: Start difference. First operand 1512 states and 1741 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:08:18,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:08:18,728 INFO L93 Difference]: Finished difference Result 2287 states and 2642 transitions. [2025-02-06 12:08:18,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:08:18,729 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2025-02-06 12:08:18,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:08:18,737 INFO L225 Difference]: With dead ends: 2287 [2025-02-06 12:08:18,737 INFO L226 Difference]: Without dead ends: 2287 [2025-02-06 12:08:18,738 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:08:18,738 INFO L435 NwaCegarLoop]: 1375 mSDtfsCounter, 695 mSDsluCounter, 2505 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 3880 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-02-06 12:08:18,739 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [698 Valid, 3880 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-02-06 12:08:18,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2287 states. [2025-02-06 12:08:18,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2287 to 1988. [2025-02-06 12:08:18,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1988 states, 1368 states have (on average 1.9181286549707601) internal successors, (2624), 1977 states have internal predecessors, (2624), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-02-06 12:08:18,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1988 states to 1988 states and 2642 transitions. [2025-02-06 12:08:18,786 INFO L78 Accepts]: Start accepts. Automaton has 1988 states and 2642 transitions. Word has length 6 [2025-02-06 12:08:18,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:08:18,786 INFO L471 AbstractCegarLoop]: Abstraction has 1988 states and 2642 transitions. [2025-02-06 12:08:18,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:08:18,787 INFO L276 IsEmpty]: Start isEmpty. Operand 1988 states and 2642 transitions. [2025-02-06 12:08:18,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-02-06 12:08:18,787 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:08:18,788 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:08:18,796 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-06 12:08:18,988 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 12:08:18,988 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr104REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-02-06 12:08:18,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:08:18,989 INFO L85 PathProgramCache]: Analyzing trace with hash -402884086, now seen corresponding path program 1 times [2025-02-06 12:08:18,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:08:18,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1152877082] [2025-02-06 12:08:18,989 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:08:18,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:08:18,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:08:18,991 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 12:08:18,993 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 12:08:19,101 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 12:08:19,105 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 12:08:19,105 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:08:19,105 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:08:19,106 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 12:08:19,107 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:08:19,144 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 12:08:19,144 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:08:19,144 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:08:19,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152877082] [2025-02-06 12:08:19,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152877082] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:08:19,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:08:19,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 12:08:19,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30705258] [2025-02-06 12:08:19,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:08:19,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:08:19,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:08:19,145 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:08:19,145 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:08:19,145 INFO L87 Difference]: Start difference. First operand 1988 states and 2642 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:08:19,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:08:19,356 INFO L93 Difference]: Finished difference Result 2063 states and 2581 transitions. [2025-02-06 12:08:19,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:08:19,357 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2025-02-06 12:08:19,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:08:19,366 INFO L225 Difference]: With dead ends: 2063 [2025-02-06 12:08:19,366 INFO L226 Difference]: Without dead ends: 2063 [2025-02-06 12:08:19,366 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:08:19,368 INFO L435 NwaCegarLoop]: 1449 mSDtfsCounter, 317 mSDsluCounter, 1311 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 2760 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 12:08:19,368 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [317 Valid, 2760 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 12:08:19,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2063 states. [2025-02-06 12:08:19,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2063 to 1845. [2025-02-06 12:08:19,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1845 states, 1225 states have (on average 1.9281632653061225) internal successors, (2362), 1834 states have internal predecessors, (2362), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-02-06 12:08:19,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1845 states to 1845 states and 2380 transitions. [2025-02-06 12:08:19,406 INFO L78 Accepts]: Start accepts. Automaton has 1845 states and 2380 transitions. Word has length 7 [2025-02-06 12:08:19,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:08:19,406 INFO L471 AbstractCegarLoop]: Abstraction has 1845 states and 2380 transitions. [2025-02-06 12:08:19,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:08:19,406 INFO L276 IsEmpty]: Start isEmpty. Operand 1845 states and 2380 transitions. [2025-02-06 12:08:19,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-02-06 12:08:19,407 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:08:19,407 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:08:19,415 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-06 12:08:19,607 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 12:08:19,608 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr102REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-02-06 12:08:19,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:08:19,609 INFO L85 PathProgramCache]: Analyzing trace with hash 2112997752, now seen corresponding path program 1 times [2025-02-06 12:08:19,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:08:19,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [167215116] [2025-02-06 12:08:19,609 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:08:19,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:08:19,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:08:19,612 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 12:08:19,632 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 12:08:19,737 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 12:08:19,742 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 12:08:19,742 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:08:19,742 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:08:19,743 INFO L256 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 12:08:19,745 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:08:19,801 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 12:08:19,802 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:08:19,802 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:08:19,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167215116] [2025-02-06 12:08:19,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167215116] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:08:19,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:08:19,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:08:19,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435132418] [2025-02-06 12:08:19,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:08:19,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:08:19,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:08:19,803 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:08:19,803 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:08:19,803 INFO L87 Difference]: Start difference. First operand 1845 states and 2380 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:08:20,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:08:20,762 INFO L93 Difference]: Finished difference Result 2063 states and 2580 transitions. [2025-02-06 12:08:20,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:08:20,763 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-02-06 12:08:20,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:08:20,769 INFO L225 Difference]: With dead ends: 2063 [2025-02-06 12:08:20,770 INFO L226 Difference]: Without dead ends: 2059 [2025-02-06 12:08:20,770 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:08:20,771 INFO L435 NwaCegarLoop]: 1449 mSDtfsCounter, 319 mSDsluCounter, 2543 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 3992 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-02-06 12:08:20,772 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [319 Valid, 3992 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-02-06 12:08:20,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2059 states. [2025-02-06 12:08:20,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2059 to 1841. [2025-02-06 12:08:20,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1841 states, 1221 states have (on average 1.9303849303849303) internal successors, (2357), 1830 states have internal predecessors, (2357), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-02-06 12:08:20,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1841 states to 1841 states and 2375 transitions. [2025-02-06 12:08:20,807 INFO L78 Accepts]: Start accepts. Automaton has 1841 states and 2375 transitions. Word has length 10 [2025-02-06 12:08:20,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:08:20,807 INFO L471 AbstractCegarLoop]: Abstraction has 1841 states and 2375 transitions. [2025-02-06 12:08:20,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:08:20,808 INFO L276 IsEmpty]: Start isEmpty. Operand 1841 states and 2375 transitions. [2025-02-06 12:08:20,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-02-06 12:08:20,809 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:08:20,809 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:08:20,819 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 12:08:21,010 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 12:08:21,010 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr727REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-02-06 12:08:21,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:08:21,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1012196081, now seen corresponding path program 1 times [2025-02-06 12:08:21,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:08:21,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1324715586] [2025-02-06 12:08:21,011 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:08:21,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:08:21,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:08:21,015 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 12:08:21,016 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 12:08:21,132 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-06 12:08:21,152 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 12:08:21,152 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:08:21,152 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:08:21,155 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 12:08:21,166 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:08:21,175 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 12:08:21,203 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 12:08:21,203 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:08:21,203 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:08:21,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324715586] [2025-02-06 12:08:21,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1324715586] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:08:21,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:08:21,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 12:08:21,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514790091] [2025-02-06 12:08:21,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:08:21,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:08:21,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:08:21,204 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:08:21,204 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:08:21,204 INFO L87 Difference]: Start difference. First operand 1841 states and 2375 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:08:23,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:08:23,255 INFO L93 Difference]: Finished difference Result 1826 states and 2337 transitions. [2025-02-06 12:08:23,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:08:23,255 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2025-02-06 12:08:23,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:08:23,260 INFO L225 Difference]: With dead ends: 1826 [2025-02-06 12:08:23,260 INFO L226 Difference]: Without dead ends: 1826 [2025-02-06 12:08:23,261 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:08:23,261 INFO L435 NwaCegarLoop]: 751 mSDtfsCounter, 1086 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 1526 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1092 SdHoareTripleChecker+Valid, 1438 SdHoareTripleChecker+Invalid, 1558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-02-06 12:08:23,261 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1092 Valid, 1438 Invalid, 1558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1526 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-02-06 12:08:23,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1826 states. [2025-02-06 12:08:23,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1826 to 1818. [2025-02-06 12:08:23,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1818 states, 1221 states have (on average 1.8927108927108927) internal successors, (2311), 1807 states have internal predecessors, (2311), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-02-06 12:08:23,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1818 states to 1818 states and 2329 transitions. [2025-02-06 12:08:23,291 INFO L78 Accepts]: Start accepts. Automaton has 1818 states and 2329 transitions. Word has length 12 [2025-02-06 12:08:23,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:08:23,292 INFO L471 AbstractCegarLoop]: Abstraction has 1818 states and 2329 transitions. [2025-02-06 12:08:23,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:08:23,292 INFO L276 IsEmpty]: Start isEmpty. Operand 1818 states and 2329 transitions. [2025-02-06 12:08:23,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-02-06 12:08:23,292 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:08:23,292 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:08:23,301 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 12:08:23,493 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 12:08:23,493 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr728REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-02-06 12:08:23,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:08:23,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1012196082, now seen corresponding path program 1 times [2025-02-06 12:08:23,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:08:23,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [837864707] [2025-02-06 12:08:23,494 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:08:23,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:08:23,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:08:23,497 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 12:08:23,498 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 12:08:23,608 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-06 12:08:23,629 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 12:08:23,630 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:08:23,630 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:08:23,634 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 12:08:23,636 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:08:23,646 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 12:08:23,715 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 12:08:23,716 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:08:23,716 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:08:23,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837864707] [2025-02-06 12:08:23,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837864707] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:08:23,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:08:23,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 12:08:23,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58457596] [2025-02-06 12:08:23,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:08:23,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:08:23,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:08:23,718 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:08:23,718 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:08:23,718 INFO L87 Difference]: Start difference. First operand 1818 states and 2329 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:08:26,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:08:26,562 INFO L93 Difference]: Finished difference Result 2100 states and 2502 transitions. [2025-02-06 12:08:26,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:08:26,562 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2025-02-06 12:08:26,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:08:26,567 INFO L225 Difference]: With dead ends: 2100 [2025-02-06 12:08:26,567 INFO L226 Difference]: Without dead ends: 2100 [2025-02-06 12:08:26,567 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:08:26,567 INFO L435 NwaCegarLoop]: 1430 mSDtfsCounter, 650 mSDsluCounter, 1385 mSDsCounter, 0 mSdLazyCounter, 1724 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 650 SdHoareTripleChecker+Valid, 2815 SdHoareTripleChecker+Invalid, 1746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2025-02-06 12:08:26,567 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [650 Valid, 2815 Invalid, 1746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1724 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2025-02-06 12:08:26,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2100 states. [2025-02-06 12:08:26,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2100 to 1932. [2025-02-06 12:08:26,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1932 states, 1335 states have (on average 1.8344569288389514) internal successors, (2449), 1921 states have internal predecessors, (2449), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-02-06 12:08:26,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1932 states to 1932 states and 2467 transitions. [2025-02-06 12:08:26,598 INFO L78 Accepts]: Start accepts. Automaton has 1932 states and 2467 transitions. Word has length 12 [2025-02-06 12:08:26,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:08:26,599 INFO L471 AbstractCegarLoop]: Abstraction has 1932 states and 2467 transitions. [2025-02-06 12:08:26,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:08:26,599 INFO L276 IsEmpty]: Start isEmpty. Operand 1932 states and 2467 transitions. [2025-02-06 12:08:26,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-02-06 12:08:26,601 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:08:26,601 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:08:26,610 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-06 12:08:26,801 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 12:08:26,802 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr728REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-02-06 12:08:26,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:08:26,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1098403751, now seen corresponding path program 1 times [2025-02-06 12:08:26,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:08:26,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [358739486] [2025-02-06 12:08:26,803 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:08:26,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:08:26,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:08:26,805 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 12:08:26,806 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 12:08:26,924 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-02-06 12:08:26,983 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-02-06 12:08:26,984 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:08:26,984 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:08:26,994 INFO L256 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 12:08:26,996 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:08:27,005 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 12:08:27,175 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:08:27,176 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:08:27,477 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:08:27,478 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:08:27,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358739486] [2025-02-06 12:08:27,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [358739486] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 12:08:27,478 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 12:08:27,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2025-02-06 12:08:27,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079740590] [2025-02-06 12:08:27,478 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 12:08:27,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 12:08:27,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:08:27,479 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 12:08:27,479 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-02-06 12:08:27,479 INFO L87 Difference]: Start difference. First operand 1932 states and 2467 transitions. Second operand has 8 states, 7 states have (on average 8.428571428571429) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:08:34,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:08:34,632 INFO L93 Difference]: Finished difference Result 2487 states and 3032 transitions. [2025-02-06 12:08:34,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 12:08:34,633 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.428571428571429) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2025-02-06 12:08:34,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:08:34,640 INFO L225 Difference]: With dead ends: 2487 [2025-02-06 12:08:34,640 INFO L226 Difference]: Without dead ends: 2487 [2025-02-06 12:08:34,640 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2025-02-06 12:08:34,641 INFO L435 NwaCegarLoop]: 1471 mSDtfsCounter, 2250 mSDsluCounter, 2346 mSDsCounter, 0 mSdLazyCounter, 2769 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2252 SdHoareTripleChecker+Valid, 3817 SdHoareTripleChecker+Invalid, 2797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 2769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2025-02-06 12:08:34,641 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2252 Valid, 3817 Invalid, 2797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 2769 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2025-02-06 12:08:34,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2487 states. [2025-02-06 12:08:34,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2487 to 2096. [2025-02-06 12:08:34,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2096 states, 1499 states have (on average 1.7885256837891927) internal successors, (2681), 2085 states have internal predecessors, (2681), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-02-06 12:08:34,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2096 states to 2096 states and 2699 transitions. [2025-02-06 12:08:34,681 INFO L78 Accepts]: Start accepts. Automaton has 2096 states and 2699 transitions. Word has length 31 [2025-02-06 12:08:34,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:08:34,681 INFO L471 AbstractCegarLoop]: Abstraction has 2096 states and 2699 transitions. [2025-02-06 12:08:34,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.428571428571429) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:08:34,681 INFO L276 IsEmpty]: Start isEmpty. Operand 2096 states and 2699 transitions. [2025-02-06 12:08:34,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2025-02-06 12:08:34,685 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:08:34,685 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:08:34,698 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-02-06 12:08:34,889 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 12:08:34,889 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr646REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-02-06 12:08:34,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:08:34,889 INFO L85 PathProgramCache]: Analyzing trace with hash 734843618, now seen corresponding path program 1 times [2025-02-06 12:08:34,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:08:34,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [653817309] [2025-02-06 12:08:34,890 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:08:34,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:08:34,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:08:34,892 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 12:08:34,893 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 12:08:35,027 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 47 statements into 1 equivalence classes. [2025-02-06 12:08:35,088 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 47 of 47 statements. [2025-02-06 12:08:35,088 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:08:35,088 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:08:35,097 INFO L256 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 12:08:35,100 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:08:35,141 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 12:08:35,142 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:08:35,142 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:08:35,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653817309] [2025-02-06 12:08:35,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653817309] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:08:35,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:08:35,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:08:35,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610560066] [2025-02-06 12:08:35,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:08:35,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:08:35,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:08:35,147 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:08:35,147 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:08:35,147 INFO L87 Difference]: Start difference. First operand 2096 states and 2699 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:08:35,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:08:35,239 INFO L93 Difference]: Finished difference Result 1785 states and 2263 transitions. [2025-02-06 12:08:35,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 12:08:35,240 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2025-02-06 12:08:35,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:08:35,245 INFO L225 Difference]: With dead ends: 1785 [2025-02-06 12:08:35,245 INFO L226 Difference]: Without dead ends: 1785 [2025-02-06 12:08:35,245 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:08:35,246 INFO L435 NwaCegarLoop]: 1294 mSDtfsCounter, 56 mSDsluCounter, 2515 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 3809 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 12:08:35,246 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 3809 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 12:08:35,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1785 states. [2025-02-06 12:08:35,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1785 to 1783. [2025-02-06 12:08:35,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1783 states, 1209 states have (on average 1.8552522746071134) internal successors, (2243), 1772 states have internal predecessors, (2243), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-02-06 12:08:35,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1783 states to 1783 states and 2261 transitions. [2025-02-06 12:08:35,275 INFO L78 Accepts]: Start accepts. Automaton has 1783 states and 2261 transitions. Word has length 47 [2025-02-06 12:08:35,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:08:35,276 INFO L471 AbstractCegarLoop]: Abstraction has 1783 states and 2261 transitions. [2025-02-06 12:08:35,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:08:35,277 INFO L276 IsEmpty]: Start isEmpty. Operand 1783 states and 2261 transitions. [2025-02-06 12:08:35,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2025-02-06 12:08:35,279 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:08:35,279 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:08:35,292 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-06 12:08:35,479 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 12:08:35,480 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr646REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-02-06 12:08:35,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:08:35,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1437967402, now seen corresponding path program 1 times [2025-02-06 12:08:35,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:08:35,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1909654094] [2025-02-06 12:08:35,482 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:08:35,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:08:35,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:08:35,484 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 12:08:35,487 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 12:08:35,634 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 55 statements into 1 equivalence classes. [2025-02-06 12:08:35,701 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-02-06 12:08:35,702 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:08:35,702 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:08:35,712 INFO L256 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 12:08:35,715 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:08:35,727 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 12:08:35,738 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 12:08:36,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 12:08:36,173 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 12:08:36,191 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-02-06 12:08:36,191 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 12:08:36,207 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 12:08:36,207 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:08:36,207 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:08:36,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909654094] [2025-02-06 12:08:36,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909654094] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:08:36,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:08:36,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 12:08:36,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881376925] [2025-02-06 12:08:36,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:08:36,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:08:36,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:08:36,208 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:08:36,208 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:08:36,208 INFO L87 Difference]: Start difference. First operand 1783 states and 2261 transitions. Second operand has 4 states, 3 states have (on average 18.333333333333332) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:08:37,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:08:37,999 INFO L93 Difference]: Finished difference Result 1699 states and 2136 transitions. [2025-02-06 12:08:37,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:08:38,000 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 18.333333333333332) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2025-02-06 12:08:38,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:08:38,005 INFO L225 Difference]: With dead ends: 1699 [2025-02-06 12:08:38,005 INFO L226 Difference]: Without dead ends: 1699 [2025-02-06 12:08:38,005 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:08:38,005 INFO L435 NwaCegarLoop]: 554 mSDtfsCounter, 910 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 981 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 916 SdHoareTripleChecker+Valid, 749 SdHoareTripleChecker+Invalid, 1072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-02-06 12:08:38,006 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [916 Valid, 749 Invalid, 1072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 981 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-02-06 12:08:38,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1699 states. [2025-02-06 12:08:38,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1699 to 1517. [2025-02-06 12:08:38,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1517 states, 1027 states have (on average 1.736124634858812) internal successors, (1783), 1506 states have internal predecessors, (1783), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-02-06 12:08:38,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1517 states to 1517 states and 1801 transitions. [2025-02-06 12:08:38,031 INFO L78 Accepts]: Start accepts. Automaton has 1517 states and 1801 transitions. Word has length 55 [2025-02-06 12:08:38,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:08:38,031 INFO L471 AbstractCegarLoop]: Abstraction has 1517 states and 1801 transitions. [2025-02-06 12:08:38,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 18.333333333333332) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:08:38,032 INFO L276 IsEmpty]: Start isEmpty. Operand 1517 states and 1801 transitions. [2025-02-06 12:08:38,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2025-02-06 12:08:38,033 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:08:38,033 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:08:38,046 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-06 12:08:38,233 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 12:08:38,234 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr639REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-02-06 12:08:38,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:08:38,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1598679900, now seen corresponding path program 1 times [2025-02-06 12:08:38,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:08:38,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [533892132] [2025-02-06 12:08:38,236 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:08:38,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:08:38,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:08:38,239 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 12:08:38,240 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 12:08:38,386 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 60 statements into 1 equivalence classes. [2025-02-06 12:08:38,445 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 60 of 60 statements. [2025-02-06 12:08:38,445 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:08:38,445 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:08:38,454 INFO L256 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-06 12:08:38,457 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:08:38,479 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 12:08:38,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-06 12:08:38,519 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-02-06 12:08:38,528 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 12:08:38,529 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:08:38,529 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:08:38,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533892132] [2025-02-06 12:08:38,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533892132] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:08:38,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:08:38,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:08:38,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214663672] [2025-02-06 12:08:38,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:08:38,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 12:08:38,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:08:38,530 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 12:08:38,530 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:08:38,530 INFO L87 Difference]: Start difference. First operand 1517 states and 1801 transitions. Second operand has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:08:40,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:08:40,608 INFO L93 Difference]: Finished difference Result 1516 states and 1799 transitions. [2025-02-06 12:08:40,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 12:08:40,608 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2025-02-06 12:08:40,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:08:40,612 INFO L225 Difference]: With dead ends: 1516 [2025-02-06 12:08:40,612 INFO L226 Difference]: Without dead ends: 1516 [2025-02-06 12:08:40,613 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-06 12:08:40,613 INFO L435 NwaCegarLoop]: 1220 mSDtfsCounter, 2 mSDsluCounter, 1866 mSDsCounter, 0 mSdLazyCounter, 1801 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3086 SdHoareTripleChecker+Invalid, 1802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-02-06 12:08:40,613 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3086 Invalid, 1802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1801 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-02-06 12:08:40,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1516 states. [2025-02-06 12:08:40,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1516 to 1516. [2025-02-06 12:08:40,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1516 states, 1027 states have (on average 1.7341772151898733) internal successors, (1781), 1505 states have internal predecessors, (1781), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-02-06 12:08:40,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1516 states to 1516 states and 1799 transitions. [2025-02-06 12:08:40,635 INFO L78 Accepts]: Start accepts. Automaton has 1516 states and 1799 transitions. Word has length 60 [2025-02-06 12:08:40,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:08:40,636 INFO L471 AbstractCegarLoop]: Abstraction has 1516 states and 1799 transitions. [2025-02-06 12:08:40,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:08:40,636 INFO L276 IsEmpty]: Start isEmpty. Operand 1516 states and 1799 transitions. [2025-02-06 12:08:40,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2025-02-06 12:08:40,637 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:08:40,637 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:08:40,651 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 12:08:40,837 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 12:08:40,838 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr640REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-02-06 12:08:40,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:08:40,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1598679901, now seen corresponding path program 1 times [2025-02-06 12:08:40,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:08:40,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1867381798] [2025-02-06 12:08:40,840 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:08:40,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:08:40,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:08:40,843 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 12:08:40,845 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 12:08:40,993 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 60 statements into 1 equivalence classes. [2025-02-06 12:08:41,071 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 60 of 60 statements. [2025-02-06 12:08:41,071 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:08:41,072 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:08:41,085 INFO L256 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-06 12:08:41,088 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:08:41,102 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 12:08:41,128 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-02-06 12:08:41,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-06 12:08:41,167 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2025-02-06 12:08:41,186 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 12:08:41,186 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:08:41,186 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:08:41,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867381798] [2025-02-06 12:08:41,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867381798] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:08:41,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:08:41,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:08:41,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216646753] [2025-02-06 12:08:41,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:08:41,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 12:08:41,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:08:41,187 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 12:08:41,187 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:08:41,187 INFO L87 Difference]: Start difference. First operand 1516 states and 1799 transitions. Second operand has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:08:43,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:08:43,852 INFO L93 Difference]: Finished difference Result 1515 states and 1797 transitions. [2025-02-06 12:08:43,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 12:08:43,852 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2025-02-06 12:08:43,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:08:43,856 INFO L225 Difference]: With dead ends: 1515 [2025-02-06 12:08:43,857 INFO L226 Difference]: Without dead ends: 1515 [2025-02-06 12:08:43,857 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-06 12:08:43,857 INFO L435 NwaCegarLoop]: 1220 mSDtfsCounter, 1 mSDsluCounter, 1897 mSDsCounter, 0 mSdLazyCounter, 1767 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3117 SdHoareTripleChecker+Invalid, 1768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2025-02-06 12:08:43,858 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 3117 Invalid, 1768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1767 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2025-02-06 12:08:43,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1515 states. [2025-02-06 12:08:43,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1515 to 1515. [2025-02-06 12:08:43,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1515 states, 1025 states have (on average 1.735609756097561) internal successors, (1779), 1504 states have internal predecessors, (1779), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-02-06 12:08:43,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1515 states to 1515 states and 1797 transitions. [2025-02-06 12:08:43,880 INFO L78 Accepts]: Start accepts. Automaton has 1515 states and 1797 transitions. Word has length 60 [2025-02-06 12:08:43,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:08:43,882 INFO L471 AbstractCegarLoop]: Abstraction has 1515 states and 1797 transitions. [2025-02-06 12:08:43,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:08:43,882 INFO L276 IsEmpty]: Start isEmpty. Operand 1515 states and 1797 transitions. [2025-02-06 12:08:43,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-02-06 12:08:43,883 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:08:43,883 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:08:43,897 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 12:08:44,088 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 12:08:44,088 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr635REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-02-06 12:08:44,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:08:44,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1087196441, now seen corresponding path program 1 times [2025-02-06 12:08:44,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:08:44,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1602808818] [2025-02-06 12:08:44,089 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:08:44,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:08:44,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:08:44,091 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 12:08:44,093 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 12:08:44,234 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-02-06 12:08:44,290 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-02-06 12:08:44,290 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:08:44,290 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:08:44,299 INFO L256 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-06 12:08:44,301 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:08:44,308 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-06 12:08:44,360 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-02-06 12:08:44,373 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 12:08:44,373 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:08:44,373 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:08:44,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602808818] [2025-02-06 12:08:44,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602808818] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:08:44,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:08:44,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 12:08:44,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860143165] [2025-02-06 12:08:44,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:08:44,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 12:08:44,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:08:44,375 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 12:08:44,375 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-02-06 12:08:44,375 INFO L87 Difference]: Start difference. First operand 1515 states and 1797 transitions. Second operand has 7 states, 5 states have (on average 13.2) internal successors, (66), 6 states have internal predecessors, (66), 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 12:08:47,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:08:47,809 INFO L93 Difference]: Finished difference Result 1533 states and 1827 transitions. [2025-02-06 12:08:47,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 12:08:47,810 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 13.2) internal successors, (66), 6 states have internal predecessors, (66), 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 68 [2025-02-06 12:08:47,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:08:47,815 INFO L225 Difference]: With dead ends: 1533 [2025-02-06 12:08:47,815 INFO L226 Difference]: Without dead ends: 1533 [2025-02-06 12:08:47,816 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2025-02-06 12:08:47,816 INFO L435 NwaCegarLoop]: 1209 mSDtfsCounter, 6 mSDsluCounter, 3763 mSDsCounter, 0 mSdLazyCounter, 2355 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 4972 SdHoareTripleChecker+Invalid, 2362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 2355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2025-02-06 12:08:47,816 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 4972 Invalid, 2362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 2355 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2025-02-06 12:08:47,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1533 states. [2025-02-06 12:08:47,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1533 to 1524. [2025-02-06 12:08:47,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1524 states, 1033 states have (on average 1.7328170377541143) internal successors, (1790), 1511 states have internal predecessors, (1790), 9 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (18), 11 states have call predecessors, (18), 9 states have call successors, (18) [2025-02-06 12:08:47,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1524 states to 1524 states and 1817 transitions. [2025-02-06 12:08:47,836 INFO L78 Accepts]: Start accepts. Automaton has 1524 states and 1817 transitions. Word has length 68 [2025-02-06 12:08:47,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:08:47,836 INFO L471 AbstractCegarLoop]: Abstraction has 1524 states and 1817 transitions. [2025-02-06 12:08:47,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 13.2) internal successors, (66), 6 states have internal predecessors, (66), 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 12:08:47,837 INFO L276 IsEmpty]: Start isEmpty. Operand 1524 states and 1817 transitions. [2025-02-06 12:08:47,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-02-06 12:08:47,837 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:08:47,837 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:08:47,851 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 12:08:48,038 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 12:08:48,038 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr636REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-02-06 12:08:48,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:08:48,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1087196442, now seen corresponding path program 1 times [2025-02-06 12:08:48,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:08:48,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [914521519] [2025-02-06 12:08:48,039 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:08:48,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:08:48,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:08:48,042 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 12:08:48,043 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 12:08:48,187 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-02-06 12:08:48,251 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-02-06 12:08:48,252 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:08:48,252 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:08:48,261 INFO L256 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 12:08:48,263 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:08:48,274 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 12:08:48,275 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 12:08:48,275 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:08:48,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914521519] [2025-02-06 12:08:48,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914521519] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:08:48,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:08:48,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:08:48,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865883005] [2025-02-06 12:08:48,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:08:48,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:08:48,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:08:48,276 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:08:48,276 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:08:48,276 INFO L87 Difference]: Start difference. First operand 1524 states and 1817 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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 12:08:48,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:08:48,334 INFO L93 Difference]: Finished difference Result 1518 states and 1803 transitions. [2025-02-06 12:08:48,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:08:48,334 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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 68 [2025-02-06 12:08:48,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:08:48,339 INFO L225 Difference]: With dead ends: 1518 [2025-02-06 12:08:48,339 INFO L226 Difference]: Without dead ends: 1518 [2025-02-06 12:08:48,339 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 65 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 12:08:48,340 INFO L435 NwaCegarLoop]: 1219 mSDtfsCounter, 0 mSDsluCounter, 2430 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3649 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 12:08:48,340 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3649 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 12:08:48,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1518 states. [2025-02-06 12:08:48,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1518 to 1518. [2025-02-06 12:08:48,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1518 states, 1027 states have (on average 1.7351509250243426) internal successors, (1782), 1507 states have internal predecessors, (1782), 9 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2025-02-06 12:08:48,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1518 states to 1518 states and 1803 transitions. [2025-02-06 12:08:48,362 INFO L78 Accepts]: Start accepts. Automaton has 1518 states and 1803 transitions. Word has length 68 [2025-02-06 12:08:48,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:08:48,362 INFO L471 AbstractCegarLoop]: Abstraction has 1518 states and 1803 transitions. [2025-02-06 12:08:48,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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 12:08:48,362 INFO L276 IsEmpty]: Start isEmpty. Operand 1518 states and 1803 transitions. [2025-02-06 12:08:48,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-02-06 12:08:48,363 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:08:48,363 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:08:48,377 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 12:08:48,563 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 12:08:48,564 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr635REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-02-06 12:08:48,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:08:48,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1208568919, now seen corresponding path program 1 times [2025-02-06 12:08:48,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:08:48,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [747083944] [2025-02-06 12:08:48,565 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:08:48,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:08:48,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:08:48,567 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 12:08:48,567 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 12:08:48,718 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-02-06 12:08:48,779 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-02-06 12:08:48,780 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:08:48,780 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:08:48,789 INFO L256 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 12:08:48,791 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:08:48,813 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:08:48,813 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:08:48,873 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:08:48,874 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:08:48,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747083944] [2025-02-06 12:08:48,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747083944] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 12:08:48,874 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 12:08:48,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2025-02-06 12:08:48,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165712380] [2025-02-06 12:08:48,874 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 12:08:48,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 12:08:48,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:08:48,875 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 12:08:48,875 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-02-06 12:08:48,875 INFO L87 Difference]: Start difference. First operand 1518 states and 1803 transitions. Second operand has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 12:08:48,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:08:48,995 INFO L93 Difference]: Finished difference Result 1530 states and 1822 transitions. [2025-02-06 12:08:48,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 12:08:48,996 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 69 [2025-02-06 12:08:48,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:08:49,000 INFO L225 Difference]: With dead ends: 1530 [2025-02-06 12:08:49,000 INFO L226 Difference]: Without dead ends: 1530 [2025-02-06 12:08:49,001 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2025-02-06 12:08:49,001 INFO L435 NwaCegarLoop]: 1218 mSDtfsCounter, 8 mSDsluCounter, 3643 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 4861 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 12:08:49,001 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 4861 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 12:08:49,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1530 states. [2025-02-06 12:08:49,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1530 to 1528. [2025-02-06 12:08:49,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1528 states, 1036 states have (on average 1.7345559845559846) internal successors, (1797), 1516 states have internal predecessors, (1797), 9 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2025-02-06 12:08:49,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1528 states to 1528 states and 1818 transitions. [2025-02-06 12:08:49,021 INFO L78 Accepts]: Start accepts. Automaton has 1528 states and 1818 transitions. Word has length 69 [2025-02-06 12:08:49,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:08:49,025 INFO L471 AbstractCegarLoop]: Abstraction has 1528 states and 1818 transitions. [2025-02-06 12:08:49,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 12:08:49,026 INFO L276 IsEmpty]: Start isEmpty. Operand 1528 states and 1818 transitions. [2025-02-06 12:08:49,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2025-02-06 12:08:49,026 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:08:49,026 INFO L218 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:08:49,039 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-02-06 12:08:49,227 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 12:08:49,227 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr635REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-02-06 12:08:49,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:08:49,227 INFO L85 PathProgramCache]: Analyzing trace with hash 796011673, now seen corresponding path program 2 times [2025-02-06 12:08:49,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:08:49,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1996429969] [2025-02-06 12:08:49,228 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 12:08:49,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:08:49,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:08:49,230 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 12:08:49,232 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 12:08:49,400 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 72 statements into 2 equivalence classes. [2025-02-06 12:09:03,954 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 72 of 72 statements. [2025-02-06 12:09:03,955 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 12:09:03,955 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:09:03,968 INFO L256 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-02-06 12:09:03,972 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:09:03,974 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 12:09:04,044 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-02-06 12:09:04,044 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 12:09:04,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-06 12:09:04,166 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-02-06 12:09:04,167 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2025-02-06 12:09:04,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2025-02-06 12:09:04,218 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-06 12:09:04,219 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:09:04,285 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2025-02-06 12:09:04,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2025-02-06 12:09:04,293 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_852 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_#t~mem32#1.base| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_852) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))) is different from false [2025-02-06 12:09:04,297 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:09:04,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996429969] [2025-02-06 12:09:04,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1996429969] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 12:09:04,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [111507833] [2025-02-06 12:09:04,297 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 12:09:04,297 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-02-06 12:09:04,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 [2025-02-06 12:09:04,299 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-02-06 12:09:04,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2025-02-06 12:09:04,561 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 72 statements into 2 equivalence classes. [2025-02-06 12:09:05,101 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 72 of 72 statements. [2025-02-06 12:09:05,101 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 12:09:05,101 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:09:05,121 INFO L256 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-06 12:09:05,122 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:09:05,254 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:09:05,254 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:09:05,475 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:09:05,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [111507833] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 12:09:05,475 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 12:09:05,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 23 [2025-02-06 12:09:05,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237113205] [2025-02-06 12:09:05,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 12:09:05,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-06 12:09:05,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:09:05,476 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-06 12:09:05,477 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=467, Unknown=1, NotChecked=44, Total=600 [2025-02-06 12:09:05,477 INFO L87 Difference]: Start difference. First operand 1528 states and 1818 transitions. Second operand has 23 states, 22 states have (on average 6.454545454545454) internal successors, (142), 22 states have internal predecessors, (142), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-06 12:09:13,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:09:13,794 INFO L93 Difference]: Finished difference Result 1544 states and 1841 transitions. [2025-02-06 12:09:13,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-02-06 12:09:13,795 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 6.454545454545454) internal successors, (142), 22 states have internal predecessors, (142), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 72 [2025-02-06 12:09:13,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:09:13,798 INFO L225 Difference]: With dead ends: 1544 [2025-02-06 12:09:13,798 INFO L226 Difference]: Without dead ends: 1538 [2025-02-06 12:09:13,798 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=386, Invalid=1969, Unknown=1, NotChecked=94, Total=2450 [2025-02-06 12:09:13,799 INFO L435 NwaCegarLoop]: 729 mSDtfsCounter, 931 mSDsluCounter, 8856 mSDsCounter, 0 mSdLazyCounter, 8063 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 938 SdHoareTripleChecker+Valid, 9585 SdHoareTripleChecker+Invalid, 8103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 8063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2025-02-06 12:09:13,799 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [938 Valid, 9585 Invalid, 8103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 8063 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2025-02-06 12:09:13,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1538 states. [2025-02-06 12:09:13,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1538 to 1536. [2025-02-06 12:09:13,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1536 states, 1045 states have (on average 1.7282296650717703) internal successors, (1806), 1524 states have internal predecessors, (1806), 9 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2025-02-06 12:09:13,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1536 states to 1536 states and 1827 transitions. [2025-02-06 12:09:13,822 INFO L78 Accepts]: Start accepts. Automaton has 1536 states and 1827 transitions. Word has length 72 [2025-02-06 12:09:13,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:09:13,822 INFO L471 AbstractCegarLoop]: Abstraction has 1536 states and 1827 transitions. [2025-02-06 12:09:13,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 6.454545454545454) internal successors, (142), 22 states have internal predecessors, (142), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-06 12:09:13,823 INFO L276 IsEmpty]: Start isEmpty. Operand 1536 states and 1827 transitions. [2025-02-06 12:09:13,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2025-02-06 12:09:13,823 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:09:13,823 INFO L218 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:09:13,834 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2025-02-06 12:09:14,053 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 12:09:14,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:09:14,224 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr636REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-02-06 12:09:14,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:09:14,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1704424410, now seen corresponding path program 1 times [2025-02-06 12:09:14,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:09:14,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1596370910] [2025-02-06 12:09:14,225 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:09:14,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:09:14,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:09:14,227 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 12:09:14,228 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 12:09:14,401 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 78 statements into 1 equivalence classes. [2025-02-06 12:09:14,506 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 78 of 78 statements. [2025-02-06 12:09:14,506 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:09:14,506 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:09:14,520 INFO L256 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-06 12:09:14,522 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:09:14,628 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:09:14,629 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:09:15,025 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:09:15,026 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 12:09:15,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596370910] [2025-02-06 12:09:15,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596370910] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 12:09:15,026 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 12:09:15,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2025-02-06 12:09:15,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966722071] [2025-02-06 12:09:15,026 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 12:09:15,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-02-06 12:09:15,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 12:09:15,027 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-02-06 12:09:15,027 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2025-02-06 12:09:15,028 INFO L87 Difference]: Start difference. First operand 1536 states and 1827 transitions. Second operand has 26 states, 26 states have (on average 3.423076923076923) internal successors, (89), 26 states have internal predecessors, (89), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 12:09:16,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 12:09:16,282 INFO L93 Difference]: Finished difference Result 1560 states and 1866 transitions. [2025-02-06 12:09:16,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-02-06 12:09:16,282 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.423076923076923) internal successors, (89), 26 states have internal predecessors, (89), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 78 [2025-02-06 12:09:16,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 12:09:16,284 INFO L225 Difference]: With dead ends: 1560 [2025-02-06 12:09:16,284 INFO L226 Difference]: Without dead ends: 1554 [2025-02-06 12:09:16,285 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=728, Invalid=1434, Unknown=0, NotChecked=0, Total=2162 [2025-02-06 12:09:16,285 INFO L435 NwaCegarLoop]: 1218 mSDtfsCounter, 22 mSDsluCounter, 13354 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 14572 SdHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-06 12:09:16,286 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 14572 Invalid, 657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-06 12:09:16,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2025-02-06 12:09:16,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1554. [2025-02-06 12:09:16,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1554 states, 1063 states have (on average 1.7206020696142992) internal successors, (1829), 1542 states have internal predecessors, (1829), 9 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2025-02-06 12:09:16,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 1850 transitions. [2025-02-06 12:09:16,303 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 1850 transitions. Word has length 78 [2025-02-06 12:09:16,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 12:09:16,303 INFO L471 AbstractCegarLoop]: Abstraction has 1554 states and 1850 transitions. [2025-02-06 12:09:16,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.423076923076923) internal successors, (89), 26 states have internal predecessors, (89), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 12:09:16,303 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 1850 transitions. [2025-02-06 12:09:16,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2025-02-06 12:09:16,304 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 12:09:16,304 INFO L218 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:09:16,321 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-02-06 12:09:16,504 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 12:09:16,505 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr636REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-02-06 12:09:16,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:09:16,506 INFO L85 PathProgramCache]: Analyzing trace with hash -567365030, now seen corresponding path program 2 times [2025-02-06 12:09:16,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 12:09:16,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [725080042] [2025-02-06 12:09:16,506 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 12:09:16,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:09:16,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:09:16,508 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 12:09:16,509 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 12:09:16,687 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 90 statements into 2 equivalence classes.