./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 8fc3dc66 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/heap-manipulation/bubble_sort_linux-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-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-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3b13662719be51a1d3330a7f40f7706daa8c7b2d4044bc92f854095c09c7c129 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 11:22:22,228 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 11:22:22,282 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2025-03-17 11:22:22,291 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 11:22:22,292 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 11:22:22,315 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 11:22:22,316 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 11:22:22,316 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 11:22:22,317 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 11:22:22,317 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 11:22:22,318 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 11:22:22,318 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 11:22:22,318 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 11:22:22,318 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 11:22:22,318 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 11:22:22,318 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 11:22:22,319 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 11:22:22,319 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 11:22:22,319 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 11:22:22,319 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 11:22:22,319 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 11:22:22,319 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 11:22:22,319 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-17 11:22:22,319 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-17 11:22:22,319 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 11:22:22,319 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 11:22:22,319 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-17 11:22:22,319 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 11:22:22,319 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 11:22:22,319 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 11:22:22,319 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 11:22:22,319 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 11:22:22,320 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 11:22:22,320 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 11:22:22,320 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 11:22:22,320 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 11:22:22,321 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 11:22:22,321 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 11:22:22,321 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 11:22:22,321 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 11:22:22,321 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 11:22:22,321 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 11:22:22,321 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 11:22:22,321 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 11:22:22,322 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 11:22:22,322 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-memcleanup) ) 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 -> 3b13662719be51a1d3330a7f40f7706daa8c7b2d4044bc92f854095c09c7c129 [2025-03-17 11:22:22,553 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 11:22:22,559 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 11:22:22,560 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 11:22:22,561 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 11:22:22,562 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 11:22:22,563 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.i [2025-03-17 11:22:23,720 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfd8b34eb/fe0b8732d34441c6981de2cef99010ff/FLAGe738446a1 [2025-03-17 11:22:24,015 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 11:22:24,016 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.i [2025-03-17 11:22:24,034 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfd8b34eb/fe0b8732d34441c6981de2cef99010ff/FLAGe738446a1 [2025-03-17 11:22:24,282 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfd8b34eb/fe0b8732d34441c6981de2cef99010ff [2025-03-17 11:22:24,284 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 11:22:24,285 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 11:22:24,286 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 11:22:24,286 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 11:22:24,288 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 11:22:24,289 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 11:22:24" (1/1) ... [2025-03-17 11:22:24,289 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26753bda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:22:24, skipping insertion in model container [2025-03-17 11:22:24,290 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 11:22:24" (1/1) ... [2025-03-17 11:22:24,314 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 11:22:24,533 WARN L617 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2025-03-17 11:22:24,534 WARN L617 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2025-03-17 11:22:24,535 WARN L617 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2025-03-17 11:22:24,561 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 11:22:24,569 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) [2025-03-17 11:22:24,570 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@61307d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:22:24, skipping insertion in model container [2025-03-17 11:22:24,570 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 11:22:24,570 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-03-17 11:22:24,571 INFO L158 Benchmark]: Toolchain (without parser) took 286.12ms. Allocated memory is still 167.8MB. Free memory was 121.9MB in the beginning and 107.4MB in the end (delta: 14.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-17 11:22:24,572 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 201.3MB. Free memory is still 118.6MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 11:22:24,572 INFO L158 Benchmark]: CACSL2BoogieTranslator took 284.52ms. Allocated memory is still 167.8MB. Free memory was 121.9MB in the beginning and 107.4MB in the end (delta: 14.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-17 11:22:24,572 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 201.3MB. Free memory is still 118.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 284.52ms. Allocated memory is still 167.8MB. Free memory was 121.9MB in the beginning and 107.4MB in the end (delta: 14.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 860]: 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/heap-manipulation/bubble_sort_linux-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-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-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3b13662719be51a1d3330a7f40f7706daa8c7b2d4044bc92f854095c09c7c129 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 11:22:26,215 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 11:22:26,286 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Bitvector.epf [2025-03-17 11:22:26,296 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 11:22:26,296 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 11:22:26,333 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 11:22:26,333 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 11:22:26,334 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 11:22:26,334 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 11:22:26,334 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 11:22:26,334 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 11:22:26,334 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 11:22:26,334 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 11:22:26,335 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 11:22:26,335 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 11:22:26,335 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 11:22:26,335 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 11:22:26,335 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 11:22:26,335 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 11:22:26,335 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 11:22:26,335 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 11:22:26,335 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 11:22:26,335 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-17 11:22:26,336 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-17 11:22:26,336 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 11:22:26,336 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 11:22:26,336 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-17 11:22:26,336 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-17 11:22:26,336 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-17 11:22:26,336 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 11:22:26,336 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 11:22:26,336 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 11:22:26,336 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 11:22:26,337 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 11:22:26,337 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 11:22:26,337 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 11:22:26,337 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 11:22:26,337 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 11:22:26,337 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 11:22:26,337 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 11:22:26,337 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 11:22:26,337 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-17 11:22:26,337 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-17 11:22:26,338 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 11:22:26,338 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 11:22:26,338 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 11:22:26,338 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 11:22:26,338 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-memcleanup) ) 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 -> 3b13662719be51a1d3330a7f40f7706daa8c7b2d4044bc92f854095c09c7c129 [2025-03-17 11:22:26,575 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 11:22:26,581 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 11:22:26,583 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 11:22:26,584 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 11:22:26,584 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 11:22:26,585 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.i [2025-03-17 11:22:27,779 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfc8238e7/b3d7d53050c24f9fa0c9a806adf2d9cb/FLAG8793f4ace [2025-03-17 11:22:28,060 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 11:22:28,062 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.i [2025-03-17 11:22:28,078 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfc8238e7/b3d7d53050c24f9fa0c9a806adf2d9cb/FLAG8793f4ace [2025-03-17 11:22:28,110 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfc8238e7/b3d7d53050c24f9fa0c9a806adf2d9cb [2025-03-17 11:22:28,115 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 11:22:28,116 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 11:22:28,117 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 11:22:28,117 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 11:22:28,121 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 11:22:28,122 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 11:22:28" (1/1) ... [2025-03-17 11:22:28,124 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f10f258 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:22:28, skipping insertion in model container [2025-03-17 11:22:28,124 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 11:22:28" (1/1) ... [2025-03-17 11:22:28,156 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 11:22:28,512 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 11:22:28,520 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-03-17 11:22:28,527 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 11:22:28,570 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 11:22:28,574 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 11:22:28,610 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 11:22:28,647 INFO L204 MainTranslator]: Completed translation [2025-03-17 11:22:28,647 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:22:28 WrapperNode [2025-03-17 11:22:28,647 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 11:22:28,648 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 11:22:28,648 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 11:22:28,648 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 11:22:28,653 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:22:28" (1/1) ... [2025-03-17 11:22:28,669 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:22:28" (1/1) ... [2025-03-17 11:22:28,683 INFO L138 Inliner]: procedures = 235, calls = 76, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 116 [2025-03-17 11:22:28,684 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 11:22:28,684 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 11:22:28,684 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 11:22:28,684 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 11:22:28,694 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:22:28" (1/1) ... [2025-03-17 11:22:28,694 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:22:28" (1/1) ... [2025-03-17 11:22:28,699 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:22:28" (1/1) ... [2025-03-17 11:22:28,722 INFO L175 MemorySlicer]: Split 37 memory accesses to 2 slices as follows [2, 35]. 95 percent of accesses are in the largest equivalence class. The 4 initializations are split as follows [2, 2]. The 10 writes are split as follows [0, 10]. [2025-03-17 11:22:28,722 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:22:28" (1/1) ... [2025-03-17 11:22:28,722 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:22:28" (1/1) ... [2025-03-17 11:22:28,733 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:22:28" (1/1) ... [2025-03-17 11:22:28,734 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:22:28" (1/1) ... [2025-03-17 11:22:28,738 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:22:28" (1/1) ... [2025-03-17 11:22:28,739 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:22:28" (1/1) ... [2025-03-17 11:22:28,743 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 11:22:28,747 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 11:22:28,747 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 11:22:28,748 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 11:22:28,748 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:22:28" (1/1) ... [2025-03-17 11:22:28,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 11:22:28,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 11:22:28,775 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) [2025-03-17 11:22:28,778 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 [2025-03-17 11:22:28,798 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-03-17 11:22:28,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-03-17 11:22:28,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-17 11:22:28,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-17 11:22:28,799 INFO L130 BoogieDeclarations]: Found specification of procedure inspect [2025-03-17 11:22:28,800 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect [2025-03-17 11:22:28,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-17 11:22:28,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-03-17 11:22:28,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-03-17 11:22:28,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-03-17 11:22:28,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-03-17 11:22:28,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-17 11:22:28,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-03-17 11:22:28,801 INFO L130 BoogieDeclarations]: Found specification of procedure val_from_node [2025-03-17 11:22:28,801 INFO L138 BoogieDeclarations]: Found implementation of procedure val_from_node [2025-03-17 11:22:28,801 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2025-03-17 11:22:28,801 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2025-03-17 11:22:28,802 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-17 11:22:28,802 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 11:22:28,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-17 11:22:28,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-17 11:22:28,802 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2025-03-17 11:22:28,802 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2025-03-17 11:22:28,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 11:22:28,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 11:22:28,939 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 11:22:28,940 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 11:22:28,984 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L923: havoc #t~mem54; [2025-03-17 11:22:29,356 INFO L? ?]: Removed 42 outVars from TransFormulas that were not future-live. [2025-03-17 11:22:29,356 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 11:22:29,363 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 11:22:29,366 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 11:22:29,366 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 11:22:29 BoogieIcfgContainer [2025-03-17 11:22:29,366 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 11:22:29,368 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 11:22:29,369 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 11:22:29,372 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 11:22:29,373 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 11:22:28" (1/3) ... [2025-03-17 11:22:29,374 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d5e1e7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 11:22:29, skipping insertion in model container [2025-03-17 11:22:29,374 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:22:28" (2/3) ... [2025-03-17 11:22:29,374 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d5e1e7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 11:22:29, skipping insertion in model container [2025-03-17 11:22:29,374 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 11:22:29" (3/3) ... [2025-03-17 11:22:29,375 INFO L128 eAbstractionObserver]: Analyzing ICFG bubble_sort_linux-2.i [2025-03-17 11:22:29,386 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 11:22:29,387 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG bubble_sort_linux-2.i that has 5 procedures, 115 locations, 1 initial locations, 23 loop locations, and 2 error locations. [2025-03-17 11:22:29,413 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 11:22:29,421 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;@240186e9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 11:22:29,421 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-03-17 11:22:29,425 INFO L276 IsEmpty]: Start isEmpty. Operand has 115 states, 85 states have (on average 1.7882352941176471) internal successors, (152), 105 states have internal predecessors, (152), 23 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2025-03-17 11:22:29,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-03-17 11:22:29,429 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 11:22:29,429 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 11:22:29,429 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2025-03-17 11:22:29,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 11:22:29,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1685016264, now seen corresponding path program 1 times [2025-03-17 11:22:29,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 11:22:29,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2013539397] [2025-03-17 11:22:29,439 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 11:22:29,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 11:22:29,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 11:22:29,442 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) [2025-03-17 11:22:29,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 11:22:29,508 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-17 11:22:29,518 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-17 11:22:29,518 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 11:22:29,519 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 11:22:29,520 INFO L256 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-17 11:22:29,522 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 11:22:29,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 11:22:29,539 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 11:22:29,540 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 11:22:29,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013539397] [2025-03-17 11:22:29,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013539397] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 11:22:29,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 11:22:29,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 11:22:29,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951930175] [2025-03-17 11:22:29,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 11:22:29,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-17 11:22:29,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 11:22:29,562 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-17 11:22:29,562 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 11:22:29,564 INFO L87 Difference]: Start difference. First operand has 115 states, 85 states have (on average 1.7882352941176471) internal successors, (152), 105 states have internal predecessors, (152), 23 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 11:22:29,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 11:22:29,578 INFO L93 Difference]: Finished difference Result 110 states and 132 transitions. [2025-03-17 11:22:29,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-17 11:22:29,579 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-03-17 11:22:29,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 11:22:29,583 INFO L225 Difference]: With dead ends: 110 [2025-03-17 11:22:29,583 INFO L226 Difference]: Without dead ends: 108 [2025-03-17 11:22:29,584 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 11:22:29,586 INFO L435 NwaCegarLoop]: 132 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, 132 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 [2025-03-17 11:22:29,587 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 11:22:29,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2025-03-17 11:22:29,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2025-03-17 11:22:29,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 82 states have (on average 1.2560975609756098) internal successors, (103), 97 states have internal predecessors, (103), 21 states have call successors, (21), 4 states have call predecessors, (21), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-03-17 11:22:29,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 130 transitions. [2025-03-17 11:22:29,617 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 130 transitions. Word has length 10 [2025-03-17 11:22:29,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 11:22:29,617 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 130 transitions. [2025-03-17 11:22:29,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 11:22:29,617 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 130 transitions. [2025-03-17 11:22:29,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-03-17 11:22:29,618 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 11:22:29,618 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] [2025-03-17 11:22:29,625 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-17 11:22:29,824 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 [2025-03-17 11:22:29,824 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2025-03-17 11:22:29,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 11:22:29,824 INFO L85 PathProgramCache]: Analyzing trace with hash -312828925, now seen corresponding path program 1 times [2025-03-17 11:22:29,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 11:22:29,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1163634638] [2025-03-17 11:22:29,825 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 11:22:29,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 11:22:29,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 11:22:29,843 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) [2025-03-17 11:22:29,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 11:22:29,919 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-17 11:22:29,959 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-17 11:22:29,959 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 11:22:29,960 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 11:22:29,961 INFO L256 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 11:22:29,962 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 11:22:30,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 11:22:30,020 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 11:22:30,020 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 11:22:30,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163634638] [2025-03-17 11:22:30,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163634638] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 11:22:30,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 11:22:30,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 11:22:30,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119618239] [2025-03-17 11:22:30,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 11:22:30,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 11:22:30,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 11:22:30,022 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 11:22:30,022 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 11:22:30,023 INFO L87 Difference]: Start difference. First operand 108 states and 130 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 11:22:30,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 11:22:30,158 INFO L93 Difference]: Finished difference Result 107 states and 128 transitions. [2025-03-17 11:22:30,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 11:22:30,159 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2025-03-17 11:22:30,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 11:22:30,159 INFO L225 Difference]: With dead ends: 107 [2025-03-17 11:22:30,159 INFO L226 Difference]: Without dead ends: 107 [2025-03-17 11:22:30,160 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-03-17 11:22:30,160 INFO L435 NwaCegarLoop]: 110 mSDtfsCounter, 174 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 11:22:30,161 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 245 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 11:22:30,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2025-03-17 11:22:30,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2025-03-17 11:22:30,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 82 states have (on average 1.2439024390243902) internal successors, (102), 96 states have internal predecessors, (102), 20 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-03-17 11:22:30,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 128 transitions. [2025-03-17 11:22:30,167 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 128 transitions. Word has length 20 [2025-03-17 11:22:30,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 11:22:30,168 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 128 transitions. [2025-03-17 11:22:30,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 11:22:30,168 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 128 transitions. [2025-03-17 11:22:30,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-03-17 11:22:30,169 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 11:22:30,169 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] [2025-03-17 11:22:30,175 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-17 11:22:30,371 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 [2025-03-17 11:22:30,371 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2025-03-17 11:22:30,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 11:22:30,371 INFO L85 PathProgramCache]: Analyzing trace with hash -2127485032, now seen corresponding path program 1 times [2025-03-17 11:22:30,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 11:22:30,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1855059133] [2025-03-17 11:22:30,372 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 11:22:30,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 11:22:30,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 11:22:30,375 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) [2025-03-17 11:22:30,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-17 11:22:30,441 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-17 11:22:30,460 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-17 11:22:30,460 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 11:22:30,460 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 11:22:30,462 INFO L256 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-03-17 11:22:30,464 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 11:22:30,513 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-17 11:22:30,514 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 [2025-03-17 11:22:30,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 11:22:30,566 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 103 [2025-03-17 11:22:30,577 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 8 treesize of output 7 [2025-03-17 11:22:30,586 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 34 treesize of output 27 [2025-03-17 11:22:30,599 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 11 [2025-03-17 11:22:30,604 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2025-03-17 11:22:30,614 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 11:22:30,616 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 66 [2025-03-17 11:22:30,666 INFO L349 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2025-03-17 11:22:30,666 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 28 [2025-03-17 11:22:31,609 INFO L349 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2025-03-17 11:22:31,609 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 36 [2025-03-17 11:22:31,626 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 22 [2025-03-17 11:22:31,637 INFO L349 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2025-03-17 11:22:31,637 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 14 [2025-03-17 11:22:31,672 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 39 treesize of output 36 [2025-03-17 11:22:31,685 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 13 treesize of output 17 [2025-03-17 11:22:31,700 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2025-03-17 11:22:31,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2025-03-17 11:22:31,722 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 11:22:31,808 INFO L349 Elim1Store]: treesize reduction 64, result has 12.3 percent of original size [2025-03-17 11:22:31,809 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 103 treesize of output 100 [2025-03-17 11:22:31,867 INFO L349 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2025-03-17 11:22:31,867 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 67 [2025-03-17 11:22:31,882 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 26 [2025-03-17 11:22:32,171 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 71 treesize of output 60 [2025-03-17 11:22:32,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 11:22:32,196 INFO L349 Elim1Store]: treesize reduction 92, result has 1.1 percent of original size [2025-03-17 11:22:32,196 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 195 treesize of output 128 [2025-03-17 11:22:32,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 11:22:32,209 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 1 [2025-03-17 11:22:32,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 11:22:32,225 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 103 [2025-03-17 11:22:32,238 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 34 treesize of output 27 [2025-03-17 11:22:32,249 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 11:22:32,253 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 66 [2025-03-17 11:22:32,269 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 13 treesize of output 17 [2025-03-17 11:22:32,348 INFO L349 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2025-03-17 11:22:32,348 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 31 [2025-03-17 11:22:32,383 INFO L349 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2025-03-17 11:22:32,383 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 17 [2025-03-17 11:22:32,392 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 22 [2025-03-17 11:22:32,405 INFO L349 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2025-03-17 11:22:32,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 14 [2025-03-17 11:22:34,213 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2025-03-17 11:22:34,213 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 25 treesize of output 26 [2025-03-17 11:22:34,297 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 16 treesize of output 8 [2025-03-17 11:22:34,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 11:22:34,315 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 11:22:34,315 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 11:22:34,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855059133] [2025-03-17 11:22:34,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855059133] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 11:22:34,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 11:22:34,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 11:22:34,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237529767] [2025-03-17 11:22:34,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 11:22:34,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 11:22:34,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 11:22:34,316 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 11:22:34,317 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2025-03-17 11:22:34,317 INFO L87 Difference]: Start difference. First operand 107 states and 128 transitions. Second operand has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 11:22:35,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 11:22:35,550 INFO L93 Difference]: Finished difference Result 206 states and 245 transitions. [2025-03-17 11:22:35,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-17 11:22:35,551 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2025-03-17 11:22:35,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 11:22:35,553 INFO L225 Difference]: With dead ends: 206 [2025-03-17 11:22:35,553 INFO L226 Difference]: Without dead ends: 206 [2025-03-17 11:22:35,554 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2025-03-17 11:22:35,554 INFO L435 NwaCegarLoop]: 96 mSDtfsCounter, 370 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-17 11:22:35,554 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 513 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-17 11:22:35,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2025-03-17 11:22:35,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 173. [2025-03-17 11:22:35,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 143 states have (on average 1.2587412587412588) internal successors, (180), 158 states have internal predecessors, (180), 23 states have call successors, (23), 6 states have call predecessors, (23), 5 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2025-03-17 11:22:35,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 212 transitions. [2025-03-17 11:22:35,563 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 212 transitions. Word has length 23 [2025-03-17 11:22:35,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 11:22:35,563 INFO L471 AbstractCegarLoop]: Abstraction has 173 states and 212 transitions. [2025-03-17 11:22:35,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 11:22:35,563 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 212 transitions. [2025-03-17 11:22:35,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-03-17 11:22:35,564 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 11:22:35,564 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] [2025-03-17 11:22:35,571 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-17 11:22:35,764 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 [2025-03-17 11:22:35,765 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2025-03-17 11:22:35,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 11:22:35,765 INFO L85 PathProgramCache]: Analyzing trace with hash -2143693312, now seen corresponding path program 1 times [2025-03-17 11:22:35,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 11:22:35,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [192594141] [2025-03-17 11:22:35,766 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 11:22:35,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 11:22:35,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 11:22:35,768 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) [2025-03-17 11:22:35,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-17 11:22:35,832 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-17 11:22:35,849 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-17 11:22:35,849 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 11:22:35,849 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 11:22:35,851 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 33 conjuncts are in the unsatisfiable core [2025-03-17 11:22:35,854 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 11:22:35,895 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-17 11:22:35,895 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 [2025-03-17 11:22:35,950 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 16 treesize of output 11 [2025-03-17 11:22:35,956 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 16 treesize of output 11 [2025-03-17 11:22:36,468 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 73 [2025-03-17 11:22:36,472 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 69 [2025-03-17 11:22:36,486 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 31 treesize of output 26 [2025-03-17 11:22:36,492 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 38 [2025-03-17 11:22:36,502 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 21 treesize of output 11 [2025-03-17 11:22:36,563 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 16 [2025-03-17 11:22:36,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 11:22:36,746 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 11:22:36,746 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 11:22:36,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192594141] [2025-03-17 11:22:36,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192594141] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 11:22:36,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 11:22:36,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 11:22:36,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344791844] [2025-03-17 11:22:36,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 11:22:36,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 11:22:36,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 11:22:36,748 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 11:22:36,748 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2025-03-17 11:22:36,748 INFO L87 Difference]: Start difference. First operand 173 states and 212 transitions. Second operand has 11 states, 11 states have (on average 2.0) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 11:22:39,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 11:22:39,478 INFO L93 Difference]: Finished difference Result 278 states and 335 transitions. [2025-03-17 11:22:39,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-17 11:22:39,479 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2025-03-17 11:22:39,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 11:22:39,480 INFO L225 Difference]: With dead ends: 278 [2025-03-17 11:22:39,480 INFO L226 Difference]: Without dead ends: 278 [2025-03-17 11:22:39,481 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2025-03-17 11:22:39,481 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 227 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 949 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-03-17 11:22:39,482 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 415 Invalid, 982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 949 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-03-17 11:22:39,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2025-03-17 11:22:39,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 253. [2025-03-17 11:22:39,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 215 states have (on average 1.2511627906976743) internal successors, (269), 231 states have internal predecessors, (269), 28 states have call successors, (28), 9 states have call predecessors, (28), 8 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2025-03-17 11:22:39,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 311 transitions. [2025-03-17 11:22:39,501 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 311 transitions. Word has length 26 [2025-03-17 11:22:39,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 11:22:39,502 INFO L471 AbstractCegarLoop]: Abstraction has 253 states and 311 transitions. [2025-03-17 11:22:39,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 11:22:39,502 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 311 transitions. [2025-03-17 11:22:39,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-03-17 11:22:39,502 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 11:22:39,502 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] [2025-03-17 11:22:39,509 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-17 11:22:39,706 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 [2025-03-17 11:22:39,706 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2025-03-17 11:22:39,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 11:22:39,707 INFO L85 PathProgramCache]: Analyzing trace with hash 5891412, now seen corresponding path program 1 times [2025-03-17 11:22:39,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 11:22:39,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [388791231] [2025-03-17 11:22:39,707 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 11:22:39,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 11:22:39,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 11:22:39,710 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) [2025-03-17 11:22:39,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-17 11:22:39,769 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-03-17 11:22:39,786 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-03-17 11:22:39,786 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 11:22:39,786 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 11:22:39,788 INFO L256 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 33 conjuncts are in the unsatisfiable core [2025-03-17 11:22:39,791 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 11:22:39,831 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-17 11:22:39,831 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 [2025-03-17 11:22:39,872 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 16 treesize of output 11 [2025-03-17 11:22:39,884 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 16 treesize of output 11 [2025-03-17 11:22:52,703 WARN L286 SmtUtils]: Spent 12.11s on a formula simplification. DAG size of input: 55 DAG size of output: 35 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-03-17 11:22:52,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 77 [2025-03-17 11:22:52,777 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 73 [2025-03-17 11:22:52,793 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 39 treesize of output 30 [2025-03-17 11:22:52,798 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 38 [2025-03-17 11:22:52,802 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 17 treesize of output 18 [2025-03-17 11:22:52,854 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 23 treesize of output 16 [2025-03-17 11:22:53,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 11:22:53,086 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 11:22:53,086 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 11:22:53,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388791231] [2025-03-17 11:22:53,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388791231] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 11:22:53,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 11:22:53,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 11:22:53,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866853735] [2025-03-17 11:22:53,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 11:22:53,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 11:22:53,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 11:22:53,087 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 11:22:53,087 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2025-03-17 11:22:53,088 INFO L87 Difference]: Start difference. First operand 253 states and 311 transitions. Second operand has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 7 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 11:22:56,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 11:22:56,216 INFO L93 Difference]: Finished difference Result 277 states and 333 transitions. [2025-03-17 11:22:56,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-17 11:22:56,216 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 7 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2025-03-17 11:22:56,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 11:22:56,217 INFO L225 Difference]: With dead ends: 277 [2025-03-17 11:22:56,217 INFO L226 Difference]: Without dead ends: 277 [2025-03-17 11:22:56,217 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 12.8s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2025-03-17 11:22:56,218 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 267 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 908 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2025-03-17 11:22:56,218 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 457 Invalid, 939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 908 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2025-03-17 11:22:56,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2025-03-17 11:22:56,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 253. [2025-03-17 11:22:56,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 215 states have (on average 1.2465116279069768) internal successors, (268), 231 states have internal predecessors, (268), 28 states have call successors, (28), 9 states have call predecessors, (28), 8 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2025-03-17 11:22:56,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 310 transitions. [2025-03-17 11:22:56,231 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 310 transitions. Word has length 29 [2025-03-17 11:22:56,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 11:22:56,235 INFO L471 AbstractCegarLoop]: Abstraction has 253 states and 310 transitions. [2025-03-17 11:22:56,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 7 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 11:22:56,235 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 310 transitions. [2025-03-17 11:22:56,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2025-03-17 11:22:56,235 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 11:22:56,235 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] [2025-03-17 11:22:56,242 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-17 11:22:56,436 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 [2025-03-17 11:22:56,436 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2025-03-17 11:22:56,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 11:22:56,437 INFO L85 PathProgramCache]: Analyzing trace with hash -56087810, now seen corresponding path program 1 times [2025-03-17 11:22:56,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 11:22:56,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1085947846] [2025-03-17 11:22:56,437 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 11:22:56,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 11:22:56,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 11:22:56,440 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) [2025-03-17 11:22:56,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-17 11:22:56,501 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-03-17 11:22:56,518 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-03-17 11:22:56,518 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 11:22:56,518 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 11:22:56,520 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 41 conjuncts are in the unsatisfiable core [2025-03-17 11:22:56,525 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 11:22:56,566 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-17 11:22:56,566 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 [2025-03-17 11:22:56,609 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 16 treesize of output 11 [2025-03-17 11:22:56,614 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 16 treesize of output 11 [2025-03-17 11:22:57,457 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse4 (bvadd (_ bv4 32) |c_list_add_#in~new#1.offset|)) (.cse6 (select (select |c_old(#memory_$Pointer$#1.base)| |c_list_add_#in~head#1.base|) |c_list_add_#in~head#1.offset|)) (.cse7 (bvadd (_ bv4 32) (select (select |c_old(#memory_$Pointer$#1.offset)| |c_list_add_#in~head#1.base|) |c_list_add_#in~head#1.offset|)))) (and (= (_ bv0 32) |c_~#gl_list~0.offset|) (= (_ bv3 32) |c_~#gl_list~0.base|) (let ((.cse2 (store |c_old(#memory_$Pointer$#1.offset)| .cse6 (store (select |c_old(#memory_$Pointer$#1.offset)| .cse6) .cse7 |c_list_add_#in~new#1.offset|)))) (let ((.cse1 (select (select |c_#memory_$Pointer$#1.offset| |c_list_add_#in~head#1.base|) |c_list_add_#in~head#1.offset|)) (.cse3 (select .cse2 |c_list_add_#in~new#1.base|))) (or (= (let ((.cse0 (store .cse2 |c_list_add_#in~new#1.base| (store .cse3 .cse4 |c_list_add_#in~head#1.offset|)))) (store .cse0 |c_list_add_#in~head#1.base| (store (select .cse0 |c_list_add_#in~head#1.base|) |c_list_add_#in~head#1.offset| .cse1))) |c_#memory_$Pointer$#1.offset|) (= (let ((.cse5 (store .cse2 |c_list_add_#in~new#1.base| (store (store .cse3 |c_list_add_#in~new#1.offset| (select (select |c_#memory_$Pointer$#1.offset| |c_list_add_#in~new#1.base|) |c_list_add_#in~new#1.offset|)) .cse4 |c_list_add_#in~head#1.offset|)))) (store .cse5 |c_list_add_#in~head#1.base| (store (select .cse5 |c_list_add_#in~head#1.base|) |c_list_add_#in~head#1.offset| .cse1))) |c_#memory_$Pointer$#1.offset|)))) (let ((.cse9 (store |c_old(#memory_$Pointer$#1.base)| .cse6 (store (select |c_old(#memory_$Pointer$#1.base)| .cse6) .cse7 |c_list_add_#in~new#1.base|)))) (let ((.cse10 (store (select .cse9 |c_list_add_#in~new#1.base|) |c_list_add_#in~new#1.offset| .cse6))) (let ((.cse11 (= |c_list_add_#in~new#1.base| .cse6)) (.cse12 (= .cse6 |c_list_add_#in~head#1.base|)) (.cse13 (exists ((v_ArrVal_264 (_ BitVec 32)) (v_ArrVal_263 (_ BitVec 32))) (= (let ((.cse14 (store .cse10 .cse4 v_ArrVal_263))) (store (store |c_old(#memory_$Pointer$#1.base)| |c_list_add_#in~new#1.base| .cse14) |c_list_add_#in~head#1.base| (store (select (store .cse9 |c_list_add_#in~new#1.base| .cse14) |c_list_add_#in~head#1.base|) |c_list_add_#in~head#1.offset| v_ArrVal_264))) |c_#memory_$Pointer$#1.base|)))) (or (and (exists ((v_ArrVal_264 (_ BitVec 32)) (v_ArrVal_263 (_ BitVec 32))) (= (let ((.cse8 (store .cse10 .cse4 v_ArrVal_263))) (store (store (store |c_old(#memory_$Pointer$#1.base)| .cse6 (select |c_#memory_$Pointer$#1.base| .cse6)) |c_list_add_#in~new#1.base| .cse8) |c_list_add_#in~head#1.base| (store (select (store .cse9 |c_list_add_#in~new#1.base| .cse8) |c_list_add_#in~head#1.base|) |c_list_add_#in~head#1.offset| v_ArrVal_264))) |c_#memory_$Pointer$#1.base|)) (not .cse11) (not .cse12)) (and .cse11 .cse13) (and .cse12 .cse13))))))) is different from true [2025-03-17 11:22:58,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 69 [2025-03-17 11:22:58,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 81 [2025-03-17 11:22:58,514 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 43 treesize of output 32 [2025-03-17 11:22:58,538 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 34 [2025-03-17 11:22:58,564 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 87 [2025-03-17 11:22:58,573 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 110 treesize of output 100 [2025-03-17 11:22:58,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 11:22:58,739 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 33 [2025-03-17 11:22:58,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 11:22:58,748 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 43 [2025-03-17 11:22:58,759 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 30 [2025-03-17 11:22:58,766 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 35 [2025-03-17 11:22:58,770 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 39 [2025-03-17 11:22:59,214 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 44 treesize of output 32 [2025-03-17 11:22:59,293 INFO L349 Elim1Store]: treesize reduction 44, result has 6.4 percent of original size [2025-03-17 11:22:59,293 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 23 [2025-03-17 11:22:59,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 11:22:59,335 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 11:22:59,335 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 11:22:59,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085947846] [2025-03-17 11:22:59,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1085947846] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 11:22:59,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 11:22:59,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-03-17 11:22:59,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473494968] [2025-03-17 11:22:59,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 11:22:59,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-17 11:22:59,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 11:22:59,336 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-17 11:22:59,336 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=112, Unknown=1, NotChecked=20, Total=156 [2025-03-17 11:22:59,337 INFO L87 Difference]: Start difference. First operand 253 states and 310 transitions. Second operand has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 9 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 11:23:03,995 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-17 11:23:11,312 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.04s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-03-17 11:23:11,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 11:23:11,371 INFO L93 Difference]: Finished difference Result 276 states and 331 transitions. [2025-03-17 11:23:11,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-17 11:23:11,371 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 9 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2025-03-17 11:23:11,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 11:23:11,373 INFO L225 Difference]: With dead ends: 276 [2025-03-17 11:23:11,373 INFO L226 Difference]: Without dead ends: 276 [2025-03-17 11:23:11,373 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=67, Invalid=278, Unknown=1, NotChecked=34, Total=380 [2025-03-17 11:23:11,373 INFO L435 NwaCegarLoop]: 43 mSDtfsCounter, 260 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 29 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 1296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 255 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2025-03-17 11:23:11,373 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 492 Invalid, 1296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1009 Invalid, 3 Unknown, 255 Unchecked, 11.7s Time] [2025-03-17 11:23:11,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2025-03-17 11:23:11,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 253. [2025-03-17 11:23:11,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 215 states have (on average 1.241860465116279) internal successors, (267), 231 states have internal predecessors, (267), 28 states have call successors, (28), 9 states have call predecessors, (28), 8 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2025-03-17 11:23:11,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 309 transitions. [2025-03-17 11:23:11,381 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 309 transitions. Word has length 32 [2025-03-17 11:23:11,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 11:23:11,381 INFO L471 AbstractCegarLoop]: Abstraction has 253 states and 309 transitions. [2025-03-17 11:23:11,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 9 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 11:23:11,381 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 309 transitions. [2025-03-17 11:23:11,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2025-03-17 11:23:11,381 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 11:23:11,381 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] [2025-03-17 11:23:11,388 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-17 11:23:11,582 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 [2025-03-17 11:23:11,582 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2025-03-17 11:23:11,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 11:23:11,582 INFO L85 PathProgramCache]: Analyzing trace with hash 7367473, now seen corresponding path program 1 times [2025-03-17 11:23:11,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 11:23:11,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2125625850] [2025-03-17 11:23:11,583 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 11:23:11,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 11:23:11,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 11:23:11,584 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) [2025-03-17 11:23:11,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-17 11:23:11,640 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-03-17 11:23:11,655 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-03-17 11:23:11,655 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 11:23:11,655 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 11:23:11,656 INFO L256 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 40 conjuncts are in the unsatisfiable core [2025-03-17 11:23:11,658 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 11:23:11,688 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-17 11:23:11,688 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 [2025-03-17 11:23:11,735 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 16 treesize of output 11 [2025-03-17 11:23:11,739 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 16 treesize of output 11 [2025-03-17 11:23:17,873 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 65 [2025-03-17 11:23:17,879 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 78 [2025-03-17 11:23:17,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 81 [2025-03-17 11:23:17,902 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 94 [2025-03-17 11:23:18,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 11:23:18,077 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 33 [2025-03-17 11:23:18,086 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 28 [2025-03-17 11:23:18,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 11:23:18,090 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 27 [2025-03-17 11:23:18,095 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 36 [2025-03-17 11:23:18,107 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 14 [2025-03-17 11:23:18,654 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 41 treesize of output 25 [2025-03-17 11:23:18,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 11:23:18,850 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 11:23:18,850 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 11:23:18,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125625850] [2025-03-17 11:23:18,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125625850] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 11:23:18,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 11:23:18,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-17 11:23:18,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281947631] [2025-03-17 11:23:18,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 11:23:18,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-17 11:23:18,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 11:23:18,851 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-17 11:23:18,851 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-03-17 11:23:18,851 INFO L87 Difference]: Start difference. First operand 253 states and 309 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 8 states have internal predecessors, (31), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 11:23:29,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 11:23:29,088 INFO L93 Difference]: Finished difference Result 275 states and 329 transitions. [2025-03-17 11:23:29,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-17 11:23:29,089 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 8 states have internal predecessors, (31), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2025-03-17 11:23:29,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 11:23:29,090 INFO L225 Difference]: With dead ends: 275 [2025-03-17 11:23:29,090 INFO L226 Difference]: Without dead ends: 275 [2025-03-17 11:23:29,091 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2025-03-17 11:23:29,091 INFO L435 NwaCegarLoop]: 48 mSDtfsCounter, 253 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 1001 mSolverCounterSat, 27 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 1029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1001 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2025-03-17 11:23:29,091 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 528 Invalid, 1029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1001 Invalid, 1 Unknown, 0 Unchecked, 9.6s Time] [2025-03-17 11:23:29,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2025-03-17 11:23:29,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 253. [2025-03-17 11:23:29,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 215 states have (on average 1.2372093023255815) internal successors, (266), 231 states have internal predecessors, (266), 28 states have call successors, (28), 9 states have call predecessors, (28), 8 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2025-03-17 11:23:29,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 308 transitions. [2025-03-17 11:23:29,097 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 308 transitions. Word has length 35 [2025-03-17 11:23:29,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 11:23:29,097 INFO L471 AbstractCegarLoop]: Abstraction has 253 states and 308 transitions. [2025-03-17 11:23:29,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 8 states have internal predecessors, (31), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 11:23:29,097 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 308 transitions. [2025-03-17 11:23:29,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-03-17 11:23:29,098 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 11:23:29,098 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 11:23:29,105 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-17 11:23:29,298 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 [2025-03-17 11:23:29,299 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2025-03-17 11:23:29,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 11:23:29,299 INFO L85 PathProgramCache]: Analyzing trace with hash -2134028936, now seen corresponding path program 1 times [2025-03-17 11:23:29,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 11:23:29,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [493896062] [2025-03-17 11:23:29,300 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 11:23:29,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 11:23:29,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 11:23:29,301 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) [2025-03-17 11:23:29,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-17 11:23:29,368 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-03-17 11:23:29,398 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-03-17 11:23:29,398 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 11:23:29,398 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 11:23:29,400 INFO L256 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 45 conjuncts are in the unsatisfiable core [2025-03-17 11:23:29,404 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 11:23:29,459 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2025-03-17 11:23:29,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2025-03-17 11:23:29,521 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 16 treesize of output 11 [2025-03-17 11:23:29,529 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 16 treesize of output 11 [2025-03-17 11:23:29,671 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2025-03-17 11:23:29,679 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 43 [2025-03-17 11:23:29,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 11:23:29,733 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 23 treesize of output 14 [2025-03-17 11:23:29,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 22 [2025-03-17 11:23:29,815 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-17 11:23:29,815 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 [2025-03-17 11:23:29,853 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 28 treesize of output 19 [2025-03-17 11:23:29,886 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 65 treesize of output 57 [2025-03-17 11:23:30,016 INFO L349 Elim1Store]: treesize reduction 52, result has 22.4 percent of original size [2025-03-17 11:23:30,016 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 77 treesize of output 55 [2025-03-17 11:23:30,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 11:23:30,021 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 38 treesize of output 31 [2025-03-17 11:23:30,024 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 15 [2025-03-17 11:23:30,061 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 17 treesize of output 12 [2025-03-17 11:23:30,171 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 16 treesize of output 8 [2025-03-17 11:23:30,197 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 11:23:30,197 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 11:23:30,483 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 68 treesize of output 60 [2025-03-17 11:23:30,914 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 11:23:30,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493896062] [2025-03-17 11:23:30,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493896062] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 11:23:30,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2081142591] [2025-03-17 11:23:30,914 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 11:23:30,914 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-03-17 11:23:30,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2025-03-17 11:23:30,928 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-03-17 11:23:30,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2025-03-17 11:23:31,022 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-03-17 11:23:31,587 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-03-17 11:23:31,587 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 11:23:31,587 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 11:23:31,615 INFO L256 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 54 conjuncts are in the unsatisfiable core [2025-03-17 11:23:31,619 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 11:23:31,648 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2025-03-17 11:23:31,648 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2025-03-17 11:23:31,732 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 16 treesize of output 11 [2025-03-17 11:23:31,738 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 16 treesize of output 11 [2025-03-17 11:23:34,212 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2025-03-17 11:23:34,255 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 25 [2025-03-17 11:23:36,105 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 27 treesize of output 17 [2025-03-17 11:23:36,110 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 11 [2025-03-17 11:23:36,118 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 48 [2025-03-17 11:23:36,123 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 55 [2025-03-17 11:23:36,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 11:23:36,308 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 25 treesize of output 12 [2025-03-17 11:23:36,316 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2025-03-17 11:23:36,317 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 36 treesize of output 35 [2025-03-17 11:23:36,322 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2025-03-17 11:23:36,587 INFO L349 Elim1Store]: treesize reduction 32, result has 34.7 percent of original size [2025-03-17 11:23:36,588 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 31 treesize of output 35 [2025-03-17 11:23:36,704 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 18 [2025-03-17 11:23:36,710 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 16 [2025-03-17 11:23:42,972 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 77 [2025-03-17 11:23:42,980 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 145 treesize of output 113 [2025-03-17 11:23:42,986 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 8 treesize of output 1 [2025-03-17 11:23:43,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 11:23:43,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 11:23:43,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 24 [2025-03-17 11:23:43,354 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2025-03-17 11:23:43,359 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2025-03-17 11:23:43,883 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 11:23:43,884 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 11:23:44,454 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_574 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= |c_~#gl_list~0.offset| (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_574) |c_~#gl_list~0.base|) (bvadd (_ bv4 32) |c_~#gl_list~0.offset|))))) is different from false [2025-03-17 11:23:45,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2081142591] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 11:23:45,325 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-17 11:23:45,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 29 [2025-03-17 11:23:45,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302071660] [2025-03-17 11:23:45,325 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-17 11:23:45,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2025-03-17 11:23:45,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 11:23:45,326 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2025-03-17 11:23:45,326 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1446, Unknown=68, NotChecked=78, Total=1722 [2025-03-17 11:23:45,326 INFO L87 Difference]: Start difference. First operand 253 states and 308 transitions. Second operand has 30 states, 29 states have (on average 2.0) internal successors, (58), 19 states have internal predecessors, (58), 7 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-03-17 11:23:55,098 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]