./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e095bb5ea0d924a9f9ab04ab393eec77de9b1aa4e50357711d33ebab16e651dd --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 00:44:09,351 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 00:44:09,403 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-09 00:44:09,407 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 00:44:09,407 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 00:44:09,422 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 00:44:09,423 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 00:44:09,423 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 00:44:09,423 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 00:44:09,423 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 00:44:09,423 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 00:44:09,423 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 00:44:09,424 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 00:44:09,424 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 00:44:09,424 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 00:44:09,424 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 00:44:09,424 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 00:44:09,424 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 00:44:09,424 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 00:44:09,424 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 00:44:09,424 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-09 00:44:09,424 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-09 00:44:09,425 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-09 00:44:09,425 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 00:44:09,425 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-09 00:44:09,425 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 00:44:09,425 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 00:44:09,425 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 00:44:09,425 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 00:44:09,425 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 00:44:09,425 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 00:44:09,425 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 00:44:09,425 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 00:44:09,426 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 00:44:09,426 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 00:44:09,426 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 00:44:09,426 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 00:44:09,426 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 00:44:09,426 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 00:44:09,426 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 00:44:09,426 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 00:44:09,426 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 00:44:09,426 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e095bb5ea0d924a9f9ab04ab393eec77de9b1aa4e50357711d33ebab16e651dd [2025-03-09 00:44:09,650 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 00:44:09,659 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 00:44:09,661 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 00:44:09,662 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 00:44:09,663 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 00:44:09,664 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-2.i [2025-03-09 00:44:10,817 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f33d6f4d0/2409d3e34cc14e81adda9b560f4dba47/FLAG0907ce656 [2025-03-09 00:44:11,152 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 00:44:11,154 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-2.i [2025-03-09 00:44:11,171 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f33d6f4d0/2409d3e34cc14e81adda9b560f4dba47/FLAG0907ce656 [2025-03-09 00:44:11,383 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f33d6f4d0/2409d3e34cc14e81adda9b560f4dba47 [2025-03-09 00:44:11,386 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 00:44:11,387 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 00:44:11,389 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 00:44:11,389 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 00:44:11,393 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 00:44:11,393 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 12:44:11" (1/1) ... [2025-03-09 00:44:11,394 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60eb3c45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:44:11, skipping insertion in model container [2025-03-09 00:44:11,394 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 12:44:11" (1/1) ... [2025-03-09 00:44:11,430 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 00:44:11,707 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:44:11,732 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:44:11,735 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:44:11,737 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:44:11,741 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:44:11,768 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:44:11,771 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:44:11,772 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:44:11,776 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:44:11,783 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:44:11,784 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:44:11,785 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:44:11,792 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:44:11,792 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:44:11,793 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:44:11,796 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:44:11,805 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 00:44:11,818 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2025-03-09 00:44:11,819 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7fbb142b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:44:11, skipping insertion in model container [2025-03-09 00:44:11,819 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 00:44:11,819 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-03-09 00:44:11,820 INFO L158 Benchmark]: Toolchain (without parser) took 432.99ms. Allocated memory is still 142.6MB. Free memory was 102.3MB in the beginning and 81.9MB in the end (delta: 20.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-09 00:44:11,820 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 201.3MB. Free memory is still 127.2MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 00:44:11,821 INFO L158 Benchmark]: CACSL2BoogieTranslator took 430.31ms. Allocated memory is still 142.6MB. Free memory was 102.3MB in the beginning and 81.9MB in the end (delta: 20.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-09 00:44:11,822 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 201.3MB. Free memory is still 127.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 430.31ms. Allocated memory is still 142.6MB. Free memory was 102.3MB in the beginning and 81.9MB in the end (delta: 20.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 766]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e095bb5ea0d924a9f9ab04ab393eec77de9b1aa4e50357711d33ebab16e651dd --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 00:44:13,503 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 00:44:13,591 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-03-09 00:44:13,597 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 00:44:13,598 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 00:44:13,621 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 00:44:13,622 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 00:44:13,623 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 00:44:13,623 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 00:44:13,623 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 00:44:13,623 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 00:44:13,623 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 00:44:13,624 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 00:44:13,624 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 00:44:13,624 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 00:44:13,624 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 00:44:13,625 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 00:44:13,625 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 00:44:13,625 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 00:44:13,625 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 00:44:13,625 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-09 00:44:13,625 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-09 00:44:13,626 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-09 00:44:13,626 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 00:44:13,626 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-09 00:44:13,626 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-09 00:44:13,626 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-09 00:44:13,626 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 00:44:13,626 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 00:44:13,626 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 00:44:13,626 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 00:44:13,627 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 00:44:13,627 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 00:44:13,627 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 00:44:13,627 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 00:44:13,627 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 00:44:13,627 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 00:44:13,628 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 00:44:13,628 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-09 00:44:13,628 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-09 00:44:13,628 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 00:44:13,628 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 00:44:13,628 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 00:44:13,628 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 00:44:13,628 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e095bb5ea0d924a9f9ab04ab393eec77de9b1aa4e50357711d33ebab16e651dd [2025-03-09 00:44:13,858 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 00:44:13,865 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 00:44:13,866 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 00:44:13,867 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 00:44:13,868 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 00:44:13,868 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-2.i [2025-03-09 00:44:14,996 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/091445eac/1c543f166acc409ba4f908f8d9238e1a/FLAGc42178869 [2025-03-09 00:44:15,257 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 00:44:15,259 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-2.i [2025-03-09 00:44:15,276 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/091445eac/1c543f166acc409ba4f908f8d9238e1a/FLAGc42178869 [2025-03-09 00:44:15,556 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/091445eac/1c543f166acc409ba4f908f8d9238e1a [2025-03-09 00:44:15,557 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 00:44:15,558 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 00:44:15,559 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 00:44:15,559 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 00:44:15,562 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 00:44:15,563 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 12:44:15" (1/1) ... [2025-03-09 00:44:15,563 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@584ec269 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:44:15, skipping insertion in model container [2025-03-09 00:44:15,563 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 12:44:15" (1/1) ... [2025-03-09 00:44:15,592 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 00:44:15,834 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:44:15,865 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:44:15,868 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:44:15,874 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:44:15,879 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:44:15,900 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:44:15,901 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:44:15,905 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:44:15,909 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:44:15,917 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:44:15,922 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:44:15,924 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:44:15,927 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:44:15,929 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:44:15,930 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:44:15,934 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:44:15,941 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 00:44:15,952 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-03-09 00:44:15,962 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 00:44:15,985 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:44:16,002 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:44:16,004 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:44:16,005 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:44:16,008 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:44:16,018 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:44:16,019 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:44:16,020 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:44:16,022 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:44:16,026 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:44:16,027 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:44:16,028 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:44:16,028 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:44:16,028 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:44:16,029 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:44:16,030 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:44:16,034 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 00:44:16,041 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 00:44:16,124 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 00:44:16,155 INFO L204 MainTranslator]: Completed translation [2025-03-09 00:44:16,156 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:44:16 WrapperNode [2025-03-09 00:44:16,157 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 00:44:16,158 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 00:44:16,158 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 00:44:16,158 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 00:44:16,163 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:44:16" (1/1) ... [2025-03-09 00:44:16,194 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:44:16" (1/1) ... [2025-03-09 00:44:16,256 INFO L138 Inliner]: procedures = 179, calls = 387, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1298 [2025-03-09 00:44:16,257 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 00:44:16,257 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 00:44:16,257 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 00:44:16,257 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 00:44:16,263 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:44:16" (1/1) ... [2025-03-09 00:44:16,263 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:44:16" (1/1) ... [2025-03-09 00:44:16,274 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:44:16" (1/1) ... [2025-03-09 00:44:16,355 INFO L175 MemorySlicer]: Split 357 memory accesses to 2 slices as follows [355, 2]. 99 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [0, 2]. The 90 writes are split as follows [90, 0]. [2025-03-09 00:44:16,355 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:44:16" (1/1) ... [2025-03-09 00:44:16,355 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:44:16" (1/1) ... [2025-03-09 00:44:16,389 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:44:16" (1/1) ... [2025-03-09 00:44:16,391 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:44:16" (1/1) ... [2025-03-09 00:44:16,394 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:44:16" (1/1) ... [2025-03-09 00:44:16,396 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:44:16" (1/1) ... [2025-03-09 00:44:16,404 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 00:44:16,405 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 00:44:16,405 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 00:44:16,405 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 00:44:16,406 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:44:16" (1/1) ... [2025-03-09 00:44:16,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 00:44:16,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:44:16,429 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-09 00:44:16,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-09 00:44:16,449 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2025-03-09 00:44:16,449 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2025-03-09 00:44:16,449 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-03-09 00:44:16,449 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-03-09 00:44:16,450 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-09 00:44:16,450 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-09 00:44:16,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-03-09 00:44:16,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-03-09 00:44:16,450 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-03-09 00:44:16,450 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-03-09 00:44:16,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-09 00:44:16,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 00:44:16,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-09 00:44:16,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-09 00:44:16,451 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-09 00:44:16,451 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-09 00:44:16,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-09 00:44:16,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-03-09 00:44:16,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-03-09 00:44:16,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-09 00:44:16,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-03-09 00:44:16,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 00:44:16,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 00:44:16,632 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 00:44:16,634 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 00:44:20,133 INFO L? ?]: Removed 1544 outVars from TransFormulas that were not future-live. [2025-03-09 00:44:20,134 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 00:44:20,171 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 00:44:20,171 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 00:44:20,171 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 12:44:20 BoogieIcfgContainer [2025-03-09 00:44:20,171 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 00:44:20,175 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 00:44:20,175 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 00:44:20,178 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 00:44:20,179 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 12:44:15" (1/3) ... [2025-03-09 00:44:20,179 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@459bbdb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 12:44:20, skipping insertion in model container [2025-03-09 00:44:20,179 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:44:16" (2/3) ... [2025-03-09 00:44:20,179 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@459bbdb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 12:44:20, skipping insertion in model container [2025-03-09 00:44:20,179 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 12:44:20" (3/3) ... [2025-03-09 00:44:20,180 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test4-2.i [2025-03-09 00:44:20,190 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 00:44:20,191 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_OAT_test4-2.i that has 4 procedures, 1446 locations, 1 initial locations, 39 loop locations, and 733 error locations. [2025-03-09 00:44:20,247 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 00:44:20,259 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;@18805dc0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 00:44:20,260 INFO L334 AbstractCegarLoop]: Starting to check reachability of 733 error locations. [2025-03-09 00:44:20,265 INFO L276 IsEmpty]: Start isEmpty. Operand has 1441 states, 695 states have (on average 2.2489208633093525) internal successors, (1563), 1432 states have internal predecessors, (1563), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2025-03-09 00:44:20,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-03-09 00:44:20,270 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:44:20,271 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-03-09 00:44:20,272 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr730REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-03-09 00:44:20,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:44:20,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1557393918, now seen corresponding path program 1 times [2025-03-09 00:44:20,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:44:20,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1623627438] [2025-03-09 00:44:20,286 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:44:20,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:44:20,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:44:20,290 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:44:20,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-09 00:44:20,427 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-09 00:44:20,432 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-09 00:44:20,432 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:44:20,432 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:44:20,434 INFO L256 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-09 00:44:20,436 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:44:20,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:44:20,442 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:44:20,442 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:44:20,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623627438] [2025-03-09 00:44:20,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1623627438] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:44:20,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:44:20,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 00:44:20,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696601588] [2025-03-09 00:44:20,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:44:20,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-09 00:44:20,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:44:20,459 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-09 00:44:20,460 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-09 00:44:20,463 INFO L87 Difference]: Start difference. First operand has 1441 states, 695 states have (on average 2.2489208633093525) internal successors, (1563), 1432 states have internal predecessors, (1563), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:44:20,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:44:20,520 INFO L93 Difference]: Finished difference Result 1422 states and 1505 transitions. [2025-03-09 00:44:20,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-09 00:44:20,525 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2025-03-09 00:44:20,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:44:20,541 INFO L225 Difference]: With dead ends: 1422 [2025-03-09 00:44:20,541 INFO L226 Difference]: Without dead ends: 1420 [2025-03-09 00:44:20,543 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-09 00:44:20,546 INFO L435 NwaCegarLoop]: 1505 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1505 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-09 00:44:20,547 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1505 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-09 00:44:20,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1420 states. [2025-03-09 00:44:20,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1420 to 1420. [2025-03-09 00:44:20,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1420 states, 685 states have (on average 2.1474452554744525) internal successors, (1471), 1411 states have internal predecessors, (1471), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2025-03-09 00:44:20,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1420 states to 1420 states and 1503 transitions. [2025-03-09 00:44:20,620 INFO L78 Accepts]: Start accepts. Automaton has 1420 states and 1503 transitions. Word has length 5 [2025-03-09 00:44:20,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:44:20,621 INFO L471 AbstractCegarLoop]: Abstraction has 1420 states and 1503 transitions. [2025-03-09 00:44:20,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:44:20,621 INFO L276 IsEmpty]: Start isEmpty. Operand 1420 states and 1503 transitions. [2025-03-09 00:44:20,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-03-09 00:44:20,621 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:44:20,621 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-03-09 00:44:20,628 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-09 00:44:20,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:44:20,822 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr730REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-03-09 00:44:20,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:44:20,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1557393949, now seen corresponding path program 1 times [2025-03-09 00:44:20,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:44:20,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1425705383] [2025-03-09 00:44:20,823 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:44:20,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:44:20,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:44:20,825 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:44:20,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-09 00:44:20,944 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-09 00:44:20,948 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-09 00:44:20,948 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:44:20,948 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:44:20,949 INFO L256 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 00:44:20,951 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:44:20,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-09 00:44:20,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:44:20,990 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:44:20,990 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:44:20,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425705383] [2025-03-09 00:44:20,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425705383] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:44:20,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:44:20,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 00:44:20,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164064134] [2025-03-09 00:44:20,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:44:20,991 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 00:44:20,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:44:20,993 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 00:44:20,993 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:44:20,993 INFO L87 Difference]: Start difference. First operand 1420 states and 1503 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:44:22,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:44:22,700 INFO L93 Difference]: Finished difference Result 1327 states and 1411 transitions. [2025-03-09 00:44:22,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 00:44:22,700 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2025-03-09 00:44:22,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:44:22,704 INFO L225 Difference]: With dead ends: 1327 [2025-03-09 00:44:22,705 INFO L226 Difference]: Without dead ends: 1327 [2025-03-09 00:44:22,705 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:44:22,705 INFO L435 NwaCegarLoop]: 797 mSDtfsCounter, 1035 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 849 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1051 SdHoareTripleChecker+Valid, 910 SdHoareTripleChecker+Invalid, 951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-03-09 00:44:22,706 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1051 Valid, 910 Invalid, 951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 849 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-03-09 00:44:22,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1327 states. [2025-03-09 00:44:22,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1327 to 1326. [2025-03-09 00:44:22,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1326 states, 685 states have (on average 2.01021897810219) internal successors, (1377), 1317 states have internal predecessors, (1377), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2025-03-09 00:44:22,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1326 states to 1326 states and 1409 transitions. [2025-03-09 00:44:22,745 INFO L78 Accepts]: Start accepts. Automaton has 1326 states and 1409 transitions. Word has length 5 [2025-03-09 00:44:22,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:44:22,746 INFO L471 AbstractCegarLoop]: Abstraction has 1326 states and 1409 transitions. [2025-03-09 00:44:22,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:44:22,746 INFO L276 IsEmpty]: Start isEmpty. Operand 1326 states and 1409 transitions. [2025-03-09 00:44:22,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-03-09 00:44:22,746 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:44:22,746 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-03-09 00:44:22,753 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-09 00:44:22,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:44:22,951 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr731REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-03-09 00:44:22,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:44:22,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1557393950, now seen corresponding path program 1 times [2025-03-09 00:44:22,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:44:22,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [150631821] [2025-03-09 00:44:22,952 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:44:22,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:44:22,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:44:22,954 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:44:22,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-09 00:44:23,039 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-09 00:44:23,043 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-09 00:44:23,044 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:44:23,044 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:44:23,045 INFO L256 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 00:44:23,046 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:44:23,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-09 00:44:23,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:44:23,073 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:44:23,073 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:44:23,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150631821] [2025-03-09 00:44:23,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150631821] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:44:23,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:44:23,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 00:44:23,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804665996] [2025-03-09 00:44:23,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:44:23,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 00:44:23,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:44:23,075 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 00:44:23,075 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:44:23,075 INFO L87 Difference]: Start difference. First operand 1326 states and 1409 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:44:25,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:44:25,277 INFO L93 Difference]: Finished difference Result 1643 states and 1746 transitions. [2025-03-09 00:44:25,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 00:44:25,278 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2025-03-09 00:44:25,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:44:25,282 INFO L225 Difference]: With dead ends: 1643 [2025-03-09 00:44:25,282 INFO L226 Difference]: Without dead ends: 1643 [2025-03-09 00:44:25,282 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:44:25,283 INFO L435 NwaCegarLoop]: 1163 mSDtfsCounter, 517 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 881 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 517 SdHoareTripleChecker+Valid, 1743 SdHoareTripleChecker+Invalid, 906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2025-03-09 00:44:25,283 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [517 Valid, 1743 Invalid, 906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 881 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2025-03-09 00:44:25,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1643 states. [2025-03-09 00:44:25,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1643 to 1491. [2025-03-09 00:44:25,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1491 states, 860 states have (on average 1.9709302325581395) internal successors, (1695), 1482 states have internal predecessors, (1695), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2025-03-09 00:44:25,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1491 states to 1491 states and 1727 transitions. [2025-03-09 00:44:25,303 INFO L78 Accepts]: Start accepts. Automaton has 1491 states and 1727 transitions. Word has length 5 [2025-03-09 00:44:25,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:44:25,304 INFO L471 AbstractCegarLoop]: Abstraction has 1491 states and 1727 transitions. [2025-03-09 00:44:25,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:44:25,304 INFO L276 IsEmpty]: Start isEmpty. Operand 1491 states and 1727 transitions. [2025-03-09 00:44:25,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-03-09 00:44:25,304 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:44:25,304 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-03-09 00:44:25,310 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-09 00:44:25,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:44:25,505 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr110REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-03-09 00:44:25,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:44:25,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1556107022, now seen corresponding path program 1 times [2025-03-09 00:44:25,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:44:25,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [533737992] [2025-03-09 00:44:25,506 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:44:25,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:44:25,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:44:25,509 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:44:25,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-09 00:44:25,588 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-09 00:44:25,591 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-09 00:44:25,591 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:44:25,591 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:44:25,592 INFO L256 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 00:44:25,593 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:44:25,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:44:25,621 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:44:25,622 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:44:25,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533737992] [2025-03-09 00:44:25,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533737992] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:44:25,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:44:25,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:44:25,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159598907] [2025-03-09 00:44:25,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:44:25,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:44:25,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:44:25,623 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:44:25,623 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:44:25,623 INFO L87 Difference]: Start difference. First operand 1491 states and 1727 transitions. Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:44:26,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:44:26,196 INFO L93 Difference]: Finished difference Result 2265 states and 2635 transitions. [2025-03-09 00:44:26,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:44:26,197 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2025-03-09 00:44:26,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:44:26,204 INFO L225 Difference]: With dead ends: 2265 [2025-03-09 00:44:26,204 INFO L226 Difference]: Without dead ends: 2265 [2025-03-09 00:44:26,207 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:44:26,208 INFO L435 NwaCegarLoop]: 1396 mSDtfsCounter, 686 mSDsluCounter, 2548 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 3944 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-09 00:44:26,208 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [689 Valid, 3944 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-09 00:44:26,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2265 states. [2025-03-09 00:44:26,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2265 to 1966. [2025-03-09 00:44:26,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1966 states, 1335 states have (on average 1.945318352059925) internal successors, (2597), 1954 states have internal predecessors, (2597), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2025-03-09 00:44:26,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1966 states to 1966 states and 2635 transitions. [2025-03-09 00:44:26,247 INFO L78 Accepts]: Start accepts. Automaton has 1966 states and 2635 transitions. Word has length 5 [2025-03-09 00:44:26,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:44:26,247 INFO L471 AbstractCegarLoop]: Abstraction has 1966 states and 2635 transitions. [2025-03-09 00:44:26,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:44:26,247 INFO L276 IsEmpty]: Start isEmpty. Operand 1966 states and 2635 transitions. [2025-03-09 00:44:26,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-03-09 00:44:26,247 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:44:26,247 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-09 00:44:26,255 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-09 00:44:26,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:44:26,452 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)] === [2025-03-09 00:44:26,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:44:26,452 INFO L85 PathProgramCache]: Analyzing trace with hash 994606260, now seen corresponding path program 1 times [2025-03-09 00:44:26,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:44:26,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1357562680] [2025-03-09 00:44:26,453 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:44:26,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:44:26,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:44:26,455 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:44:26,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-09 00:44:26,545 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-09 00:44:26,548 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-09 00:44:26,548 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:44:26,548 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:44:26,549 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 00:44:26,551 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:44:26,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:44:26,577 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:44:26,577 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:44:26,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357562680] [2025-03-09 00:44:26,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1357562680] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:44:26,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:44:26,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 00:44:26,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526964336] [2025-03-09 00:44:26,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:44:26,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 00:44:26,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:44:26,578 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 00:44:26,578 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:44:26,578 INFO L87 Difference]: Start difference. First operand 1966 states and 2635 transitions. Second operand has 3 states, 3 states have (on average 2.0) 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) [2025-03-09 00:44:26,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:44:26,753 INFO L93 Difference]: Finished difference Result 2046 states and 2582 transitions. [2025-03-09 00:44:26,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 00:44:26,754 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) 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 [2025-03-09 00:44:26,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:44:26,761 INFO L225 Difference]: With dead ends: 2046 [2025-03-09 00:44:26,761 INFO L226 Difference]: Without dead ends: 2046 [2025-03-09 00:44:26,761 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 [2025-03-09 00:44:26,762 INFO L435 NwaCegarLoop]: 1468 mSDtfsCounter, 312 mSDsluCounter, 1333 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 2801 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 [2025-03-09 00:44:26,763 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 2801 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-09 00:44:26,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2046 states. [2025-03-09 00:44:26,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2046 to 1831. [2025-03-09 00:44:26,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1831 states, 1200 states have (on average 1.955) internal successors, (2346), 1819 states have internal predecessors, (2346), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2025-03-09 00:44:26,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1831 states to 1831 states and 2384 transitions. [2025-03-09 00:44:26,803 INFO L78 Accepts]: Start accepts. Automaton has 1831 states and 2384 transitions. Word has length 6 [2025-03-09 00:44:26,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:44:26,803 INFO L471 AbstractCegarLoop]: Abstraction has 1831 states and 2384 transitions. [2025-03-09 00:44:26,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) 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) [2025-03-09 00:44:26,803 INFO L276 IsEmpty]: Start isEmpty. Operand 1831 states and 2384 transitions. [2025-03-09 00:44:26,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-03-09 00:44:26,804 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:44:26,804 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:44:26,811 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-09 00:44:27,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:44:27,005 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-03-09 00:44:27,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:44:27,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1961123408, now seen corresponding path program 1 times [2025-03-09 00:44:27,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:44:27,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2025246844] [2025-03-09 00:44:27,006 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:44:27,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:44:27,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:44:27,008 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:44:27,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-09 00:44:27,085 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 00:44:27,088 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 00:44:27,088 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:44:27,088 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:44:27,089 INFO L256 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-09 00:44:27,090 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:44:27,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:44:27,102 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:44:27,102 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:44:27,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025246844] [2025-03-09 00:44:27,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2025246844] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:44:27,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:44:27,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 00:44:27,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098049291] [2025-03-09 00:44:27,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:44:27,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 00:44:27,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:44:27,103 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 00:44:27,103 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:44:27,103 INFO L87 Difference]: Start difference. First operand 1831 states and 2384 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:44:28,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:44:28,305 INFO L93 Difference]: Finished difference Result 2011 states and 2572 transitions. [2025-03-09 00:44:28,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 00:44:28,306 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-03-09 00:44:28,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:44:28,311 INFO L225 Difference]: With dead ends: 2011 [2025-03-09 00:44:28,311 INFO L226 Difference]: Without dead ends: 2010 [2025-03-09 00:44:28,311 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:44:28,311 INFO L435 NwaCegarLoop]: 1312 mSDtfsCounter, 184 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 2084 SdHoareTripleChecker+Invalid, 722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-09 00:44:28,311 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 2084 Invalid, 722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 722 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-09 00:44:28,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2010 states. [2025-03-09 00:44:28,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2010 to 1833. [2025-03-09 00:44:28,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1833 states, 1202 states have (on average 1.9534109816971714) internal successors, (2348), 1821 states have internal predecessors, (2348), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2025-03-09 00:44:28,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1833 states to 1833 states and 2386 transitions. [2025-03-09 00:44:28,339 INFO L78 Accepts]: Start accepts. Automaton has 1833 states and 2386 transitions. Word has length 8 [2025-03-09 00:44:28,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:44:28,340 INFO L471 AbstractCegarLoop]: Abstraction has 1833 states and 2386 transitions. [2025-03-09 00:44:28,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:44:28,341 INFO L276 IsEmpty]: Start isEmpty. Operand 1833 states and 2386 transitions. [2025-03-09 00:44:28,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-03-09 00:44:28,341 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:44:28,342 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:44:28,349 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-09 00:44:28,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:44:28,547 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr102REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-03-09 00:44:28,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:44:28,547 INFO L85 PathProgramCache]: Analyzing trace with hash -665074965, now seen corresponding path program 1 times [2025-03-09 00:44:28,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:44:28,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [20005779] [2025-03-09 00:44:28,548 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:44:28,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:44:28,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:44:28,550 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:44:28,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-09 00:44:28,628 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-09 00:44:28,631 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-09 00:44:28,631 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:44:28,631 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:44:28,632 INFO L256 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 00:44:28,633 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:44:28,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:44:28,683 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:44:28,683 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:44:28,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20005779] [2025-03-09 00:44:28,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20005779] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:44:28,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:44:28,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:44:28,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430536393] [2025-03-09 00:44:28,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:44:28,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:44:28,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:44:28,684 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:44:28,684 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:44:28,684 INFO L87 Difference]: Start difference. First operand 1833 states and 2386 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:44:29,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:44:29,227 INFO L93 Difference]: Finished difference Result 2048 states and 2583 transitions. [2025-03-09 00:44:29,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:44:29,228 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-03-09 00:44:29,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:44:29,233 INFO L225 Difference]: With dead ends: 2048 [2025-03-09 00:44:29,233 INFO L226 Difference]: Without dead ends: 2044 [2025-03-09 00:44:29,233 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:44:29,235 INFO L435 NwaCegarLoop]: 1468 mSDtfsCounter, 314 mSDsluCounter, 2584 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 4052 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-09 00:44:29,235 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 4052 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-09 00:44:29,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2044 states. [2025-03-09 00:44:29,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2044 to 1829. [2025-03-09 00:44:29,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1829 states, 1198 states have (on average 1.9557595993322203) internal successors, (2343), 1817 states have internal predecessors, (2343), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2025-03-09 00:44:29,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1829 states to 1829 states and 2381 transitions. [2025-03-09 00:44:29,260 INFO L78 Accepts]: Start accepts. Automaton has 1829 states and 2381 transitions. Word has length 9 [2025-03-09 00:44:29,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:44:29,260 INFO L471 AbstractCegarLoop]: Abstraction has 1829 states and 2381 transitions. [2025-03-09 00:44:29,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:44:29,260 INFO L276 IsEmpty]: Start isEmpty. Operand 1829 states and 2381 transitions. [2025-03-09 00:44:29,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-03-09 00:44:29,261 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:44:29,261 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:44:29,267 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-09 00:44:29,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:44:29,461 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr726REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-03-09 00:44:29,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:44:29,462 INFO L85 PathProgramCache]: Analyzing trace with hash 774372183, now seen corresponding path program 1 times [2025-03-09 00:44:29,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:44:29,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [110250078] [2025-03-09 00:44:29,462 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:44:29,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:44:29,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:44:29,465 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:44:29,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-09 00:44:29,557 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-09 00:44:29,572 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-09 00:44:29,572 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:44:29,572 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:44:29,574 INFO L256 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 00:44:29,581 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:44:29,586 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-09 00:44:29,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:44:29,612 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:44:29,613 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:44:29,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110250078] [2025-03-09 00:44:29,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110250078] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:44:29,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:44:29,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 00:44:29,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543506441] [2025-03-09 00:44:29,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:44:29,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:44:29,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:44:29,614 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:44:29,614 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:44:29,614 INFO L87 Difference]: Start difference. First operand 1829 states and 2381 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:44:31,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:44:31,559 INFO L93 Difference]: Finished difference Result 1814 states and 2343 transitions. [2025-03-09 00:44:31,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:44:31,560 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-03-09 00:44:31,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:44:31,564 INFO L225 Difference]: With dead ends: 1814 [2025-03-09 00:44:31,565 INFO L226 Difference]: Without dead ends: 1814 [2025-03-09 00:44:31,565 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 [2025-03-09 00:44:31,566 INFO L435 NwaCegarLoop]: 772 mSDtfsCounter, 1086 mSDsluCounter, 690 mSDsCounter, 0 mSdLazyCounter, 1556 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1102 SdHoareTripleChecker+Valid, 1462 SdHoareTripleChecker+Invalid, 1588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-03-09 00:44:31,566 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1102 Valid, 1462 Invalid, 1588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1556 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-03-09 00:44:31,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1814 states. [2025-03-09 00:44:31,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1814 to 1806. [2025-03-09 00:44:31,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1806 states, 1198 states have (on average 1.9173622704507514) internal successors, (2297), 1794 states have internal predecessors, (2297), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2025-03-09 00:44:31,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1806 states to 1806 states and 2335 transitions. [2025-03-09 00:44:31,589 INFO L78 Accepts]: Start accepts. Automaton has 1806 states and 2335 transitions. Word has length 10 [2025-03-09 00:44:31,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:44:31,589 INFO L471 AbstractCegarLoop]: Abstraction has 1806 states and 2335 transitions. [2025-03-09 00:44:31,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:44:31,589 INFO L276 IsEmpty]: Start isEmpty. Operand 1806 states and 2335 transitions. [2025-03-09 00:44:31,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-03-09 00:44:31,590 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:44:31,590 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:44:31,597 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-03-09 00:44:31,790 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:44:31,791 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr727REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-03-09 00:44:31,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:44:31,791 INFO L85 PathProgramCache]: Analyzing trace with hash 774372184, now seen corresponding path program 1 times [2025-03-09 00:44:31,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:44:31,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [168327813] [2025-03-09 00:44:31,791 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:44:31,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:44:31,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:44:31,793 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:44:31,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-09 00:44:31,885 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-09 00:44:31,902 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-09 00:44:31,902 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:44:31,902 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:44:31,904 INFO L256 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-09 00:44:31,906 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:44:31,912 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-09 00:44:31,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:44:31,963 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:44:31,963 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:44:31,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168327813] [2025-03-09 00:44:31,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168327813] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:44:31,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:44:31,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 00:44:31,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665391730] [2025-03-09 00:44:31,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:44:31,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:44:31,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:44:31,964 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:44:31,964 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:44:31,964 INFO L87 Difference]: Start difference. First operand 1806 states and 2335 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:44:34,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:44:34,490 INFO L93 Difference]: Finished difference Result 2088 states and 2508 transitions. [2025-03-09 00:44:34,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:44:34,490 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-03-09 00:44:34,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:44:34,495 INFO L225 Difference]: With dead ends: 2088 [2025-03-09 00:44:34,495 INFO L226 Difference]: Without dead ends: 2088 [2025-03-09 00:44:34,495 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 [2025-03-09 00:44:34,495 INFO L435 NwaCegarLoop]: 1445 mSDtfsCounter, 641 mSDsluCounter, 1424 mSDsCounter, 0 mSdLazyCounter, 1724 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 641 SdHoareTripleChecker+Valid, 2869 SdHoareTripleChecker+Invalid, 1746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-03-09 00:44:34,495 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [641 Valid, 2869 Invalid, 1746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1724 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-03-09 00:44:34,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2088 states. [2025-03-09 00:44:34,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2088 to 1920. [2025-03-09 00:44:34,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1920 states, 1312 states have (on average 1.8559451219512195) internal successors, (2435), 1908 states have internal predecessors, (2435), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2025-03-09 00:44:34,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1920 states to 1920 states and 2473 transitions. [2025-03-09 00:44:34,517 INFO L78 Accepts]: Start accepts. Automaton has 1920 states and 2473 transitions. Word has length 10 [2025-03-09 00:44:34,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:44:34,517 INFO L471 AbstractCegarLoop]: Abstraction has 1920 states and 2473 transitions. [2025-03-09 00:44:34,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:44:34,517 INFO L276 IsEmpty]: Start isEmpty. Operand 1920 states and 2473 transitions. [2025-03-09 00:44:34,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-03-09 00:44:34,518 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:44:34,519 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:44:34,526 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-03-09 00:44:34,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:44:34,720 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr727REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-03-09 00:44:34,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:44:34,720 INFO L85 PathProgramCache]: Analyzing trace with hash 599915937, now seen corresponding path program 1 times [2025-03-09 00:44:34,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:44:34,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [826099270] [2025-03-09 00:44:34,721 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:44:34,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:44:34,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:44:34,722 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:44:34,723 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-09 00:44:34,819 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-03-09 00:44:34,863 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-03-09 00:44:34,863 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:44:34,863 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:44:34,869 INFO L256 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-09 00:44:34,871 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:44:34,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-09 00:44:35,001 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:44:35,001 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 00:44:35,268 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:44:35,268 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:44:35,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [826099270] [2025-03-09 00:44:35,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [826099270] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 00:44:35,268 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-09 00:44:35,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2025-03-09 00:44:35,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928779240] [2025-03-09 00:44:35,268 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-09 00:44:35,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-09 00:44:35,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:44:35,269 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-09 00:44:35,269 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-09 00:44:35,269 INFO L87 Difference]: Start difference. First operand 1920 states and 2473 transitions. Second operand has 8 states, 7 states have (on average 8.0) internal successors, (56), 8 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:44:42,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:44:42,293 INFO L93 Difference]: Finished difference Result 2475 states and 3038 transitions. [2025-03-09 00:44:42,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-09 00:44:42,294 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.0) internal successors, (56), 8 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2025-03-09 00:44:42,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:44:42,299 INFO L225 Difference]: With dead ends: 2475 [2025-03-09 00:44:42,300 INFO L226 Difference]: Without dead ends: 2475 [2025-03-09 00:44:42,300 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2025-03-09 00:44:42,300 INFO L435 NwaCegarLoop]: 1486 mSDtfsCounter, 2232 mSDsluCounter, 2400 mSDsCounter, 0 mSdLazyCounter, 2769 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2234 SdHoareTripleChecker+Valid, 3886 SdHoareTripleChecker+Invalid, 2797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 2769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2025-03-09 00:44:42,300 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2234 Valid, 3886 Invalid, 2797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 2769 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2025-03-09 00:44:42,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2475 states. [2025-03-09 00:44:42,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2475 to 2084. [2025-03-09 00:44:42,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2084 states, 1476 states have (on average 1.806910569105691) internal successors, (2667), 2072 states have internal predecessors, (2667), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2025-03-09 00:44:42,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2084 states to 2084 states and 2705 transitions. [2025-03-09 00:44:42,330 INFO L78 Accepts]: Start accepts. Automaton has 2084 states and 2705 transitions. Word has length 29 [2025-03-09 00:44:42,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:44:42,331 INFO L471 AbstractCegarLoop]: Abstraction has 2084 states and 2705 transitions. [2025-03-09 00:44:42,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.0) internal successors, (56), 8 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:44:42,331 INFO L276 IsEmpty]: Start isEmpty. Operand 2084 states and 2705 transitions. [2025-03-09 00:44:42,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2025-03-09 00:44:42,334 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:44:42,334 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:44:42,344 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-03-09 00:44:42,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:44:42,534 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr645REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-03-09 00:44:42,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:44:42,535 INFO L85 PathProgramCache]: Analyzing trace with hash 895251391, now seen corresponding path program 1 times [2025-03-09 00:44:42,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:44:42,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1103755962] [2025-03-09 00:44:42,535 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:44:42,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:44:42,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:44:42,537 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:44:42,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-09 00:44:42,651 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-03-09 00:44:42,695 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-03-09 00:44:42,695 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:44:42,696 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:44:42,704 INFO L256 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 00:44:42,705 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:44:42,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:44:42,737 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:44:42,738 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:44:42,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103755962] [2025-03-09 00:44:42,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103755962] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:44:42,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:44:42,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:44:42,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620216257] [2025-03-09 00:44:42,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:44:42,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:44:42,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:44:42,739 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:44:42,739 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:44:42,739 INFO L87 Difference]: Start difference. First operand 2084 states and 2705 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:44:42,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:44:42,800 INFO L93 Difference]: Finished difference Result 1773 states and 2269 transitions. [2025-03-09 00:44:42,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 00:44:42,800 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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 44 [2025-03-09 00:44:42,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:44:42,806 INFO L225 Difference]: With dead ends: 1773 [2025-03-09 00:44:42,806 INFO L226 Difference]: Without dead ends: 1773 [2025-03-09 00:44:42,807 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:44:42,807 INFO L435 NwaCegarLoop]: 1315 mSDtfsCounter, 56 mSDsluCounter, 2557 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 3872 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-09 00:44:42,808 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 3872 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-09 00:44:42,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1773 states. [2025-03-09 00:44:42,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1773 to 1771. [2025-03-09 00:44:42,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1771 states, 1186 states have (on average 1.8794266441821248) internal successors, (2229), 1759 states have internal predecessors, (2229), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2025-03-09 00:44:42,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1771 states to 1771 states and 2267 transitions. [2025-03-09 00:44:42,837 INFO L78 Accepts]: Start accepts. Automaton has 1771 states and 2267 transitions. Word has length 44 [2025-03-09 00:44:42,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:44:42,838 INFO L471 AbstractCegarLoop]: Abstraction has 1771 states and 2267 transitions. [2025-03-09 00:44:42,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:44:42,838 INFO L276 IsEmpty]: Start isEmpty. Operand 1771 states and 2267 transitions. [2025-03-09 00:44:42,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2025-03-09 00:44:42,840 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:44:42,840 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] [2025-03-09 00:44:42,852 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-03-09 00:44:43,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:44:43,044 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr645REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-03-09 00:44:43,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:44:43,045 INFO L85 PathProgramCache]: Analyzing trace with hash 266609527, now seen corresponding path program 1 times [2025-03-09 00:44:43,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:44:43,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [927705508] [2025-03-09 00:44:43,045 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:44:43,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:44:43,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:44:43,047 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:44:43,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-09 00:44:43,157 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 52 statements into 1 equivalence classes. [2025-03-09 00:44:43,216 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 52 of 52 statements. [2025-03-09 00:44:43,216 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:44:43,216 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:44:43,224 INFO L256 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-09 00:44:43,226 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:44:43,232 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-09 00:44:43,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-09 00:44:43,567 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-03-09 00:44:43,580 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-09 00:44:43,580 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-03-09 00:44:43,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:44:43,586 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:44:43,587 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:44:43,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927705508] [2025-03-09 00:44:43,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927705508] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:44:43,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:44:43,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:44:43,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668568899] [2025-03-09 00:44:43,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:44:43,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 00:44:43,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:44:43,588 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 00:44:43,588 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:44:43,588 INFO L87 Difference]: Start difference. First operand 1771 states and 2267 transitions. Second operand has 5 states, 4 states have (on average 13.0) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:44:45,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:44:45,416 INFO L93 Difference]: Finished difference Result 1687 states and 2142 transitions. [2025-03-09 00:44:45,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 00:44:45,416 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 13.0) internal successors, (52), 5 states have internal predecessors, (52), 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 52 [2025-03-09 00:44:45,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:44:45,420 INFO L225 Difference]: With dead ends: 1687 [2025-03-09 00:44:45,420 INFO L226 Difference]: Without dead ends: 1687 [2025-03-09 00:44:45,420 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2025-03-09 00:44:45,420 INFO L435 NwaCegarLoop]: 575 mSDtfsCounter, 1850 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 1468 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1856 SdHoareTripleChecker+Valid, 978 SdHoareTripleChecker+Invalid, 1571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-03-09 00:44:45,420 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1856 Valid, 978 Invalid, 1571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1468 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-03-09 00:44:45,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1687 states. [2025-03-09 00:44:45,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1687 to 1512. [2025-03-09 00:44:45,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1512 states, 1011 states have (on average 1.7566765578635015) internal successors, (1776), 1500 states have internal predecessors, (1776), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2025-03-09 00:44:45,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1512 states to 1512 states and 1814 transitions. [2025-03-09 00:44:45,439 INFO L78 Accepts]: Start accepts. Automaton has 1512 states and 1814 transitions. Word has length 52 [2025-03-09 00:44:45,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:44:45,440 INFO L471 AbstractCegarLoop]: Abstraction has 1512 states and 1814 transitions. [2025-03-09 00:44:45,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 13.0) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:44:45,440 INFO L276 IsEmpty]: Start isEmpty. Operand 1512 states and 1814 transitions. [2025-03-09 00:44:45,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2025-03-09 00:44:45,441 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:44:45,441 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] [2025-03-09 00:44:45,451 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-03-09 00:44:45,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:44:45,642 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr638REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-03-09 00:44:45,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:44:45,642 INFO L85 PathProgramCache]: Analyzing trace with hash 245828561, now seen corresponding path program 1 times [2025-03-09 00:44:45,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:44:45,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1791016692] [2025-03-09 00:44:45,643 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:44:45,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:44:45,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:44:45,645 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:44:45,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-09 00:44:45,760 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 57 statements into 1 equivalence classes. [2025-03-09 00:44:45,816 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 57 of 57 statements. [2025-03-09 00:44:45,816 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:44:45,816 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:44:45,825 INFO L256 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-09 00:44:45,828 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:44:45,837 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-09 00:44:45,851 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-09 00:44:45,873 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-03-09 00:44:45,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:44:45,881 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:44:45,882 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:44:45,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791016692] [2025-03-09 00:44:45,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1791016692] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:44:45,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:44:45,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:44:45,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151995048] [2025-03-09 00:44:45,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:44:45,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 00:44:45,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:44:45,882 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 00:44:45,882 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:44:45,882 INFO L87 Difference]: Start difference. First operand 1512 states and 1814 transitions. Second operand has 5 states, 4 states have (on average 14.25) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:44:47,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:44:47,696 INFO L93 Difference]: Finished difference Result 1511 states and 1812 transitions. [2025-03-09 00:44:47,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 00:44:47,696 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.25) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2025-03-09 00:44:47,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:44:47,700 INFO L225 Difference]: With dead ends: 1511 [2025-03-09 00:44:47,700 INFO L226 Difference]: Without dead ends: 1511 [2025-03-09 00:44:47,700 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-09 00:44:47,702 INFO L435 NwaCegarLoop]: 1241 mSDtfsCounter, 2 mSDsluCounter, 1929 mSDsCounter, 0 mSdLazyCounter, 1801 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3170 SdHoareTripleChecker+Invalid, 1802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-03-09 00:44:47,702 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3170 Invalid, 1802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1801 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-03-09 00:44:47,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1511 states. [2025-03-09 00:44:47,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1511 to 1511. [2025-03-09 00:44:47,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1511 states, 1011 states have (on average 1.7546983184965381) internal successors, (1774), 1499 states have internal predecessors, (1774), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2025-03-09 00:44:47,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1511 states to 1511 states and 1812 transitions. [2025-03-09 00:44:47,717 INFO L78 Accepts]: Start accepts. Automaton has 1511 states and 1812 transitions. Word has length 57 [2025-03-09 00:44:47,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:44:47,717 INFO L471 AbstractCegarLoop]: Abstraction has 1511 states and 1812 transitions. [2025-03-09 00:44:47,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.25) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:44:47,717 INFO L276 IsEmpty]: Start isEmpty. Operand 1511 states and 1812 transitions. [2025-03-09 00:44:47,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2025-03-09 00:44:47,718 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:44:47,718 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] [2025-03-09 00:44:47,734 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-03-09 00:44:47,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:44:47,919 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr639REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-03-09 00:44:47,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:44:47,919 INFO L85 PathProgramCache]: Analyzing trace with hash 245828562, now seen corresponding path program 1 times [2025-03-09 00:44:47,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:44:47,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1369592650] [2025-03-09 00:44:47,920 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:44:47,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:44:47,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:44:47,921 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:44:47,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-09 00:44:48,025 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 57 statements into 1 equivalence classes. [2025-03-09 00:44:48,080 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 57 of 57 statements. [2025-03-09 00:44:48,080 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:44:48,080 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:44:48,088 INFO L256 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-09 00:44:48,090 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:44:48,106 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-09 00:44:48,121 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-09 00:44:48,125 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-03-09 00:44:48,157 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2025-03-09 00:44:48,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:44:48,168 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:44:48,168 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:44:48,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369592650] [2025-03-09 00:44:48,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369592650] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:44:48,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:44:48,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:44:48,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226201761] [2025-03-09 00:44:48,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:44:48,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 00:44:48,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:44:48,169 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 00:44:48,169 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:44:48,169 INFO L87 Difference]: Start difference. First operand 1511 states and 1812 transitions. Second operand has 5 states, 4 states have (on average 14.25) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:44:50,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:44:50,318 INFO L93 Difference]: Finished difference Result 1510 states and 1810 transitions. [2025-03-09 00:44:50,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 00:44:50,318 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.25) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2025-03-09 00:44:50,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:44:50,322 INFO L225 Difference]: With dead ends: 1510 [2025-03-09 00:44:50,322 INFO L226 Difference]: Without dead ends: 1510 [2025-03-09 00:44:50,322 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-09 00:44:50,322 INFO L435 NwaCegarLoop]: 1241 mSDtfsCounter, 1 mSDsluCounter, 1960 mSDsCounter, 0 mSdLazyCounter, 1767 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3201 SdHoareTripleChecker+Invalid, 1768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2025-03-09 00:44:50,323 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 3201 Invalid, 1768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1767 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2025-03-09 00:44:50,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1510 states. [2025-03-09 00:44:50,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1510 to 1510. [2025-03-09 00:44:50,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1510 states, 1009 states have (on average 1.7561942517343905) internal successors, (1772), 1498 states have internal predecessors, (1772), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2025-03-09 00:44:50,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1510 states to 1510 states and 1810 transitions. [2025-03-09 00:44:50,334 INFO L78 Accepts]: Start accepts. Automaton has 1510 states and 1810 transitions. Word has length 57 [2025-03-09 00:44:50,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:44:50,335 INFO L471 AbstractCegarLoop]: Abstraction has 1510 states and 1810 transitions. [2025-03-09 00:44:50,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.25) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:44:50,335 INFO L276 IsEmpty]: Start isEmpty. Operand 1510 states and 1810 transitions. [2025-03-09 00:44:50,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-03-09 00:44:50,335 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:44:50,335 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:44:50,345 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-03-09 00:44:50,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:44:50,539 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr634REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-03-09 00:44:50,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:44:50,539 INFO L85 PathProgramCache]: Analyzing trace with hash -692354770, now seen corresponding path program 1 times [2025-03-09 00:44:50,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:44:50,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1738752052] [2025-03-09 00:44:50,540 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:44:50,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:44:50,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:44:50,542 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:44:50,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-03-09 00:44:50,664 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-03-09 00:44:50,723 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-03-09 00:44:50,724 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:44:50,724 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:44:50,731 INFO L256 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-09 00:44:50,733 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:44:50,739 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-09 00:44:50,796 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-03-09 00:44:50,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:44:50,806 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:44:50,806 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:44:50,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738752052] [2025-03-09 00:44:50,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738752052] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:44:50,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:44:50,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-09 00:44:50,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986034389] [2025-03-09 00:44:50,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:44:50,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-09 00:44:50,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:44:50,807 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-09 00:44:50,807 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-09 00:44:50,807 INFO L87 Difference]: Start difference. First operand 1510 states and 1810 transitions. Second operand has 7 states, 5 states have (on average 12.6) internal successors, (63), 6 states have internal predecessors, (63), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-09 00:44:53,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:44:53,482 INFO L93 Difference]: Finished difference Result 1528 states and 1840 transitions. [2025-03-09 00:44:53,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-09 00:44:53,483 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 12.6) internal successors, (63), 6 states have internal predecessors, (63), 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 65 [2025-03-09 00:44:53,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:44:53,486 INFO L225 Difference]: With dead ends: 1528 [2025-03-09 00:44:53,486 INFO L226 Difference]: Without dead ends: 1528 [2025-03-09 00:44:53,486 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2025-03-09 00:44:53,486 INFO L435 NwaCegarLoop]: 1224 mSDtfsCounter, 12 mSDsluCounter, 3768 mSDsCounter, 0 mSdLazyCounter, 2445 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 4992 SdHoareTripleChecker+Invalid, 2462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2025-03-09 00:44:53,486 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 4992 Invalid, 2462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2445 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2025-03-09 00:44:53,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1528 states. [2025-03-09 00:44:53,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1528 to 1519. [2025-03-09 00:44:53,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1519 states, 1017 states have (on average 1.7531956735496559) internal successors, (1783), 1505 states have internal predecessors, (1783), 19 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (28), 12 states have call predecessors, (28), 19 states have call successors, (28) [2025-03-09 00:44:53,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1519 states to 1519 states and 1830 transitions. [2025-03-09 00:44:53,500 INFO L78 Accepts]: Start accepts. Automaton has 1519 states and 1830 transitions. Word has length 65 [2025-03-09 00:44:53,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:44:53,500 INFO L471 AbstractCegarLoop]: Abstraction has 1519 states and 1830 transitions. [2025-03-09 00:44:53,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 12.6) internal successors, (63), 6 states have internal predecessors, (63), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-09 00:44:53,500 INFO L276 IsEmpty]: Start isEmpty. Operand 1519 states and 1830 transitions. [2025-03-09 00:44:53,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-03-09 00:44:53,501 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:44:53,501 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:44:53,510 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-03-09 00:44:53,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:44:53,701 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)] === [2025-03-09 00:44:53,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:44:53,702 INFO L85 PathProgramCache]: Analyzing trace with hash -692354769, now seen corresponding path program 1 times [2025-03-09 00:44:53,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:44:53,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1917388535] [2025-03-09 00:44:53,702 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:44:53,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:44:53,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:44:53,704 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:44:53,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-03-09 00:44:53,813 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-03-09 00:44:53,864 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-03-09 00:44:53,864 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:44:53,864 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:44:53,872 INFO L256 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 00:44:53,873 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:44:53,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:44:53,887 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:44:53,887 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:44:53,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917388535] [2025-03-09 00:44:53,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1917388535] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:44:53,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:44:53,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:44:53,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238897779] [2025-03-09 00:44:53,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:44:53,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:44:53,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:44:53,888 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:44:53,888 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:44:53,888 INFO L87 Difference]: Start difference. First operand 1519 states and 1830 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-09 00:44:53,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:44:53,924 INFO L93 Difference]: Finished difference Result 1513 states and 1816 transitions. [2025-03-09 00:44:53,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:44:53,925 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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 65 [2025-03-09 00:44:53,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:44:53,930 INFO L225 Difference]: With dead ends: 1513 [2025-03-09 00:44:53,930 INFO L226 Difference]: Without dead ends: 1513 [2025-03-09 00:44:53,930 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:44:53,930 INFO L435 NwaCegarLoop]: 1240 mSDtfsCounter, 0 mSDsluCounter, 2472 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3712 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-09 00:44:53,930 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3712 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-09 00:44:53,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1513 states. [2025-03-09 00:44:53,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1513 to 1513. [2025-03-09 00:44:53,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1513 states, 1011 states have (on average 1.7556874381800198) internal successors, (1775), 1501 states have internal predecessors, (1775), 19 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (22), 10 states have call predecessors, (22), 19 states have call successors, (22) [2025-03-09 00:44:53,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1513 states to 1513 states and 1816 transitions. [2025-03-09 00:44:53,955 INFO L78 Accepts]: Start accepts. Automaton has 1513 states and 1816 transitions. Word has length 65 [2025-03-09 00:44:53,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:44:53,956 INFO L471 AbstractCegarLoop]: Abstraction has 1513 states and 1816 transitions. [2025-03-09 00:44:53,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-09 00:44:53,956 INFO L276 IsEmpty]: Start isEmpty. Operand 1513 states and 1816 transitions. [2025-03-09 00:44:53,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-03-09 00:44:53,956 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:44:53,956 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:44:53,967 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-03-09 00:44:54,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:44:54,157 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr634REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-03-09 00:44:54,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:44:54,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1831505821, now seen corresponding path program 1 times [2025-03-09 00:44:54,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:44:54,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1223319677] [2025-03-09 00:44:54,158 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:44:54,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:44:54,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:44:54,160 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:44:54,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-03-09 00:44:54,277 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-03-09 00:44:54,328 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-03-09 00:44:54,328 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:44:54,328 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:44:54,336 INFO L256 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 00:44:54,337 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:44:54,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:44:54,352 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 00:44:54,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:44:54,387 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:44:54,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223319677] [2025-03-09 00:44:54,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1223319677] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 00:44:54,387 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-09 00:44:54,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2025-03-09 00:44:54,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645761293] [2025-03-09 00:44:54,387 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-09 00:44:54,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-09 00:44:54,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:44:54,388 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-09 00:44:54,388 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-03-09 00:44:54,388 INFO L87 Difference]: Start difference. First operand 1513 states and 1816 transitions. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-09 00:44:54,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:44:54,497 INFO L93 Difference]: Finished difference Result 1525 states and 1835 transitions. [2025-03-09 00:44:54,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-09 00:44:54,498 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 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 66 [2025-03-09 00:44:54,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:44:54,501 INFO L225 Difference]: With dead ends: 1525 [2025-03-09 00:44:54,501 INFO L226 Difference]: Without dead ends: 1525 [2025-03-09 00:44:54,501 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2025-03-09 00:44:54,501 INFO L435 NwaCegarLoop]: 1239 mSDtfsCounter, 8 mSDsluCounter, 3706 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 4945 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 [2025-03-09 00:44:54,501 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 4945 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-09 00:44:54,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1525 states. [2025-03-09 00:44:54,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1525 to 1523. [2025-03-09 00:44:54,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1523 states, 1020 states have (on average 1.7549019607843137) internal successors, (1790), 1510 states have internal predecessors, (1790), 19 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (22), 10 states have call predecessors, (22), 19 states have call successors, (22) [2025-03-09 00:44:54,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1523 states to 1523 states and 1831 transitions. [2025-03-09 00:44:54,516 INFO L78 Accepts]: Start accepts. Automaton has 1523 states and 1831 transitions. Word has length 66 [2025-03-09 00:44:54,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:44:54,516 INFO L471 AbstractCegarLoop]: Abstraction has 1523 states and 1831 transitions. [2025-03-09 00:44:54,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-09 00:44:54,516 INFO L276 IsEmpty]: Start isEmpty. Operand 1523 states and 1831 transitions. [2025-03-09 00:44:54,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-03-09 00:44:54,517 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:44:54,517 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] [2025-03-09 00:44:54,527 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-03-09 00:44:54,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:44:54,717 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr634REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-03-09 00:44:54,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:44:54,718 INFO L85 PathProgramCache]: Analyzing trace with hash -2126306066, now seen corresponding path program 2 times [2025-03-09 00:44:54,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:44:54,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1790235373] [2025-03-09 00:44:54,718 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 00:44:54,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:44:54,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:44:54,720 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:44:54,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-03-09 00:44:54,852 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 69 statements into 2 equivalence classes. [2025-03-09 00:45:01,620 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 69 of 69 statements. [2025-03-09 00:45:01,620 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 00:45:01,620 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:45:01,635 INFO L256 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-09 00:45:01,637 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:45:01,719 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-09 00:45:01,719 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-03-09 00:45:01,733 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-09 00:45:01,879 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-09 00:45:01,879 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2025-03-09 00:45:01,912 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2025-03-09 00:45:01,926 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-09 00:45:01,926 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 00:45:02,014 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2025-03-09 00:45:02,014 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2025-03-09 00:45:02,021 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_848 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_#t~mem32#1.base| (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_848) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))) is different from false [2025-03-09 00:45:02,025 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:45:02,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790235373] [2025-03-09 00:45:02,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790235373] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 00:45:02,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1130316511] [2025-03-09 00:45:02,025 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 00:45:02,025 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-03-09 00:45:02,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2025-03-09 00:45:02,043 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-03-09 00:45:02,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2025-03-09 00:45:02,216 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 69 statements into 2 equivalence classes. [2025-03-09 00:45:02,751 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 69 of 69 statements. [2025-03-09 00:45:02,752 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 00:45:02,752 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:45:02,769 INFO L256 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-09 00:45:02,771 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:45:02,868 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:45:02,868 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 00:45:03,034 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:45:03,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1130316511] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 00:45:03,034 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 00:45:03,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 24 [2025-03-09 00:45:03,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270233757] [2025-03-09 00:45:03,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 00:45:03,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-09 00:45:03,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:45:03,035 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-09 00:45:03,035 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=513, Unknown=1, NotChecked=46, Total=650 [2025-03-09 00:45:03,036 INFO L87 Difference]: Start difference. First operand 1523 states and 1831 transitions. Second operand has 24 states, 23 states have (on average 5.739130434782608) internal successors, (132), 23 states have internal predecessors, (132), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-09 00:45:09,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:45:09,855 INFO L93 Difference]: Finished difference Result 1539 states and 1857 transitions. [2025-03-09 00:45:09,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-03-09 00:45:09,855 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.739130434782608) internal successors, (132), 23 states have internal predecessors, (132), 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 69 [2025-03-09 00:45:09,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:45:09,857 INFO L225 Difference]: With dead ends: 1539 [2025-03-09 00:45:09,857 INFO L226 Difference]: Without dead ends: 1535 [2025-03-09 00:45:09,858 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=413, Invalid=2242, Unknown=1, NotChecked=100, Total=2756 [2025-03-09 00:45:09,858 INFO L435 NwaCegarLoop]: 744 mSDtfsCounter, 992 mSDsluCounter, 8292 mSDsCounter, 0 mSdLazyCounter, 7586 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1011 SdHoareTripleChecker+Valid, 9036 SdHoareTripleChecker+Invalid, 7631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 7586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2025-03-09 00:45:09,859 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1011 Valid, 9036 Invalid, 7631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 7586 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2025-03-09 00:45:09,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1535 states. [2025-03-09 00:45:09,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1535 to 1531. [2025-03-09 00:45:09,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1531 states, 1029 states have (on average 1.749271137026239) internal successors, (1800), 1518 states have internal predecessors, (1800), 19 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (22), 10 states have call predecessors, (22), 19 states have call successors, (22) [2025-03-09 00:45:09,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1531 states to 1531 states and 1841 transitions. [2025-03-09 00:45:09,870 INFO L78 Accepts]: Start accepts. Automaton has 1531 states and 1841 transitions. Word has length 69 [2025-03-09 00:45:09,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:45:09,870 INFO L471 AbstractCegarLoop]: Abstraction has 1531 states and 1841 transitions. [2025-03-09 00:45:09,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.739130434782608) internal successors, (132), 23 states have internal predecessors, (132), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-09 00:45:09,870 INFO L276 IsEmpty]: Start isEmpty. Operand 1531 states and 1841 transitions. [2025-03-09 00:45:09,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2025-03-09 00:45:09,873 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:45:09,873 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] [2025-03-09 00:45:09,881 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (20)] Ended with exit code 0 [2025-03-09 00:45:10,093 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-03-09 00:45:10,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:45:10,274 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr635REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-03-09 00:45:10,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:45:10,274 INFO L85 PathProgramCache]: Analyzing trace with hash 2037962383, now seen corresponding path program 1 times [2025-03-09 00:45:10,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:45:10,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1836784594] [2025-03-09 00:45:10,275 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:45:10,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:45:10,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:45:10,277 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:45:10,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-03-09 00:45:10,430 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-03-09 00:45:10,499 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-03-09 00:45:10,499 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:45:10,499 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:45:10,508 INFO L256 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-09 00:45:10,509 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:45:10,598 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:45:10,598 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 00:45:10,940 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:45:10,940 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:45:10,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836784594] [2025-03-09 00:45:10,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836784594] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 00:45:10,941 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-09 00:45:10,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2025-03-09 00:45:10,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489062645] [2025-03-09 00:45:10,941 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-09 00:45:10,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-03-09 00:45:10,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:45:10,941 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-03-09 00:45:10,942 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2025-03-09 00:45:10,942 INFO L87 Difference]: Start difference. First operand 1531 states and 1841 transitions. Second operand has 26 states, 26 states have (on average 3.3076923076923075) internal successors, (86), 26 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-09 00:45:12,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:45:12,043 INFO L93 Difference]: Finished difference Result 1555 states and 1880 transitions. [2025-03-09 00:45:12,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-03-09 00:45:12,044 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.3076923076923075) internal successors, (86), 26 states have internal predecessors, (86), 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 75 [2025-03-09 00:45:12,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:45:12,048 INFO L225 Difference]: With dead ends: 1555 [2025-03-09 00:45:12,048 INFO L226 Difference]: Without dead ends: 1549 [2025-03-09 00:45:12,049 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=728, Invalid=1434, Unknown=0, NotChecked=0, Total=2162 [2025-03-09 00:45:12,049 INFO L435 NwaCegarLoop]: 1239 mSDtfsCounter, 25 mSDsluCounter, 14815 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 16054 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-09 00:45:12,049 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 16054 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 620 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-09 00:45:12,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1549 states. [2025-03-09 00:45:12,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1549 to 1549. [2025-03-09 00:45:12,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1549 states, 1047 states have (on average 1.7411652340019101) internal successors, (1823), 1536 states have internal predecessors, (1823), 19 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (22), 10 states have call predecessors, (22), 19 states have call successors, (22) [2025-03-09 00:45:12,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1549 states to 1549 states and 1864 transitions. [2025-03-09 00:45:12,061 INFO L78 Accepts]: Start accepts. Automaton has 1549 states and 1864 transitions. Word has length 75 [2025-03-09 00:45:12,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:45:12,061 INFO L471 AbstractCegarLoop]: Abstraction has 1549 states and 1864 transitions. [2025-03-09 00:45:12,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.3076923076923075) internal successors, (86), 26 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-09 00:45:12,062 INFO L276 IsEmpty]: Start isEmpty. Operand 1549 states and 1864 transitions. [2025-03-09 00:45:12,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2025-03-09 00:45:12,062 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:45:12,062 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] [2025-03-09 00:45:12,074 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2025-03-09 00:45:12,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:45:12,263 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr635REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2025-03-09 00:45:12,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:45:12,264 INFO L85 PathProgramCache]: Analyzing trace with hash -287108657, now seen corresponding path program 2 times [2025-03-09 00:45:12,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:45:12,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1421657607] [2025-03-09 00:45:12,264 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 00:45:12,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:45:12,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:45:12,266 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:45:12,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-03-09 00:45:12,409 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 87 statements into 2 equivalence classes. [2025-03-09 00:45:19,605 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 87 of 87 statements. [2025-03-09 00:45:19,605 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 00:45:19,605 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:45:19,623 INFO L256 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 63 conjuncts are in the unsatisfiable core [2025-03-09 00:45:19,627 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:45:19,692 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-09 00:45:19,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-03-09 00:45:19,696 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-09 00:45:19,713 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-09 00:45:19,716 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-03-09 00:45:19,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2025-03-09 00:45:19,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2025-03-09 00:45:20,074 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-09 00:45:20,075 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2025-03-09 00:45:20,083 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2025-03-09 00:45:20,114 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2025-03-09 00:45:20,120 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2025-03-09 00:45:20,135 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2025-03-09 00:45:20,135 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 00:45:20,562 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:45:20,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421657607] [2025-03-09 00:45:20,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1421657607] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 00:45:20,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1575809396] [2025-03-09 00:45:20,562 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 00:45:20,562 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-03-09 00:45:20,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2025-03-09 00:45:20,564 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-03-09 00:45:20,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2025-03-09 00:45:20,817 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 87 statements into 2 equivalence classes. [2025-03-09 00:45:21,431 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 87 of 87 statements. [2025-03-09 00:45:21,432 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 00:45:21,432 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:45:21,454 INFO L256 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 42 conjuncts are in the unsatisfiable core [2025-03-09 00:45:21,456 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:45:22,137 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:45:22,137 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 00:45:23,799 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:45:23,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1575809396] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 00:45:23,799 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 00:45:23,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 26, 26] total 58 [2025-03-09 00:45:23,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635316642] [2025-03-09 00:45:23,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 00:45:23,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2025-03-09 00:45:23,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:45:23,800 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2025-03-09 00:45:23,801 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=700, Invalid=2950, Unknown=10, NotChecked=0, Total=3660 [2025-03-09 00:45:23,801 INFO L87 Difference]: Start difference. First operand 1549 states and 1864 transitions. Second operand has 58 states, 57 states have (on average 2.9473684210526314) internal successors, (168), 58 states have internal predecessors, (168), 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)