./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) 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/uthash-2.0.2/uthash_SAX_test7-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 32a24617e0b83f023304780397185eef703cdbd26842fbad821fea93a0f1f12f --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 13:52:19,727 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 13:52:19,774 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-17 13:52:19,777 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 13:52:19,778 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 13:52:19,797 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 13:52:19,798 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 13:52:19,798 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 13:52:19,798 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 13:52:19,798 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 13:52:19,798 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 13:52:19,798 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 13:52:19,798 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 13:52:19,799 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 13:52:19,799 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 13:52:19,799 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 13:52:19,799 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 13:52:19,799 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 13:52:19,799 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 13:52:19,800 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 13:52:19,800 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-17 13:52:19,800 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-17 13:52:19,800 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-17 13:52:19,800 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 13:52:19,800 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-17 13:52:19,800 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 13:52:19,800 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 13:52:19,800 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 13:52:19,800 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 13:52:19,800 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 13:52:19,801 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 13:52:19,801 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 13:52:19,801 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 13:52:19,801 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 13:52:19,801 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 13:52:19,801 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 13:52:19,801 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 13:52:19,801 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 13:52:19,801 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 13:52:19,802 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 13:52:19,802 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 13:52:19,802 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 13:52:19,802 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 32a24617e0b83f023304780397185eef703cdbd26842fbad821fea93a0f1f12f [2025-03-17 13:52:20,033 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 13:52:20,041 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 13:52:20,043 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 13:52:20,044 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 13:52:20,044 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 13:52:20,045 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.i [2025-03-17 13:52:21,227 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b90c9a8d8/df4f4d322c3343e393ee5208b3da7c1c/FLAG827d5ab6d [2025-03-17 13:52:21,480 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 13:52:21,480 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.i [2025-03-17 13:52:21,498 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b90c9a8d8/df4f4d322c3343e393ee5208b3da7c1c/FLAG827d5ab6d [2025-03-17 13:52:21,773 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b90c9a8d8/df4f4d322c3343e393ee5208b3da7c1c [2025-03-17 13:52:21,775 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 13:52:21,776 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 13:52:21,777 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 13:52:21,777 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 13:52:21,779 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 13:52:21,780 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 01:52:21" (1/1) ... [2025-03-17 13:52:21,780 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1daea35e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:52:21, skipping insertion in model container [2025-03-17 13:52:21,781 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 01:52:21" (1/1) ... [2025-03-17 13:52:21,808 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 13:52:22,060 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:52:22,084 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:52:22,087 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:52:22,090 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:52:22,097 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:52:22,130 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:52:22,130 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:52:22,132 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:52:22,133 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:52:22,136 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:52:22,138 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:52:22,139 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:52:22,139 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:52:22,141 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:52:22,142 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:52:22,143 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:52:22,144 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:52:22,144 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:52:22,144 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:52:22,150 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:52:22,157 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 13:52:22,170 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 13:52:22,171 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5fa698d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:52:22, skipping insertion in model container [2025-03-17 13:52:22,171 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 13:52:22,171 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-03-17 13:52:22,173 INFO L158 Benchmark]: Toolchain (without parser) took 396.31ms. Allocated memory is still 142.6MB. Free memory was 110.2MB in the beginning and 90.3MB in the end (delta: 19.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-17 13:52:22,173 INFO L158 Benchmark]: CDTParser took 0.79ms. Allocated memory is still 201.3MB. Free memory is still 123.4MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 13:52:22,173 INFO L158 Benchmark]: CACSL2BoogieTranslator took 394.67ms. Allocated memory is still 142.6MB. Free memory was 109.7MB in the beginning and 90.3MB in the end (delta: 19.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-17 13:52:22,174 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.79ms. Allocated memory is still 201.3MB. Free memory is still 123.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 394.67ms. Allocated memory is still 142.6MB. Free memory was 109.7MB in the beginning and 90.3MB in the end (delta: 19.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 727]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 32a24617e0b83f023304780397185eef703cdbd26842fbad821fea93a0f1f12f --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 13:52:23,795 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 13:52:23,892 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-03-17 13:52:23,899 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 13:52:23,900 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 13:52:23,918 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 13:52:23,919 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 13:52:23,919 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 13:52:23,919 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 13:52:23,919 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 13:52:23,920 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 13:52:23,920 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 13:52:23,920 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 13:52:23,920 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 13:52:23,920 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 13:52:23,920 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 13:52:23,920 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 13:52:23,920 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 13:52:23,921 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 13:52:23,921 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 13:52:23,921 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-17 13:52:23,921 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-17 13:52:23,921 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-17 13:52:23,921 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 13:52:23,921 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-17 13:52:23,921 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-17 13:52:23,921 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-17 13:52:23,921 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 13:52:23,921 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 13:52:23,922 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 13:52:23,922 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 13:52:23,922 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 13:52:23,922 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 13:52:23,922 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 13:52:23,922 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 13:52:23,922 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 13:52:23,922 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 13:52:23,922 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 13:52:23,922 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-17 13:52:23,923 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-17 13:52:23,923 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 13:52:23,923 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 13:52:23,923 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 13:52:23,923 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 13:52:23,923 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 32a24617e0b83f023304780397185eef703cdbd26842fbad821fea93a0f1f12f [2025-03-17 13:52:24,145 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 13:52:24,153 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 13:52:24,154 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 13:52:24,155 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 13:52:24,155 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 13:52:24,156 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.i [2025-03-17 13:52:25,322 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7da5b99d0/5c3c2b2f252640c5b344bc3010ba1e3c/FLAGd0e0b48ad [2025-03-17 13:52:25,585 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 13:52:25,588 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.i [2025-03-17 13:52:25,605 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7da5b99d0/5c3c2b2f252640c5b344bc3010ba1e3c/FLAGd0e0b48ad [2025-03-17 13:52:25,620 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7da5b99d0/5c3c2b2f252640c5b344bc3010ba1e3c [2025-03-17 13:52:25,622 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 13:52:25,623 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 13:52:25,624 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 13:52:25,624 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 13:52:25,627 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 13:52:25,627 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 01:52:25" (1/1) ... [2025-03-17 13:52:25,629 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2201fb3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:52:25, skipping insertion in model container [2025-03-17 13:52:25,629 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 01:52:25" (1/1) ... [2025-03-17 13:52:25,656 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 13:52:25,879 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:52:25,910 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:52:25,915 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:52:25,919 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:52:25,924 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:52:25,950 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:52:25,950 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:52:25,952 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:52:25,952 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:52:25,955 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:52:25,956 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:52:25,957 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:52:25,957 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:52:25,960 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:52:25,961 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:52:25,962 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:52:25,963 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:52:25,964 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:52:25,964 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:52:25,967 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:52:25,975 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 13:52:25,985 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-03-17 13:52:25,996 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 13:52:26,024 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:52:26,042 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:52:26,051 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:52:26,053 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:52:26,055 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:52:26,091 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:52:26,091 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:52:26,093 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:52:26,093 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:52:26,095 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:52:26,096 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:52:26,097 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:52:26,097 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:52:26,099 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:52:26,099 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:52:26,100 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:52:26,101 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:52:26,101 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:52:26,101 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:52:26,105 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:52:26,108 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 13:52:26,112 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 13:52:26,179 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 13:52:26,208 INFO L204 MainTranslator]: Completed translation [2025-03-17 13:52:26,209 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:52:26 WrapperNode [2025-03-17 13:52:26,210 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 13:52:26,211 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 13:52:26,211 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 13:52:26,211 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 13:52:26,216 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:52:26" (1/1) ... [2025-03-17 13:52:26,246 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:52:26" (1/1) ... [2025-03-17 13:52:26,287 INFO L138 Inliner]: procedures = 179, calls = 323, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1152 [2025-03-17 13:52:26,287 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 13:52:26,288 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 13:52:26,288 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 13:52:26,288 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 13:52:26,298 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:52:26" (1/1) ... [2025-03-17 13:52:26,298 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:52:26" (1/1) ... [2025-03-17 13:52:26,303 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:52:26" (1/1) ... [2025-03-17 13:52:26,377 INFO L175 MemorySlicer]: Split 301 memory accesses to 3 slices as follows [34, 2, 265]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [0, 2, 0]. The 62 writes are split as follows [4, 0, 58]. [2025-03-17 13:52:26,381 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:52:26" (1/1) ... [2025-03-17 13:52:26,382 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:52:26" (1/1) ... [2025-03-17 13:52:26,426 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:52:26" (1/1) ... [2025-03-17 13:52:26,430 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:52:26" (1/1) ... [2025-03-17 13:52:26,434 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:52:26" (1/1) ... [2025-03-17 13:52:26,440 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:52:26" (1/1) ... [2025-03-17 13:52:26,455 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 13:52:26,459 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 13:52:26,459 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 13:52:26,459 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 13:52:26,460 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:52:26" (1/1) ... [2025-03-17 13:52:26,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 13:52:26,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:52:26,483 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 13:52:26,485 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 13:52:26,503 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2025-03-17 13:52:26,504 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2025-03-17 13:52:26,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2025-03-17 13:52:26,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2025-03-17 13:52:26,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2025-03-17 13:52:26,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-03-17 13:52:26,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-03-17 13:52:26,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2025-03-17 13:52:26,505 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-03-17 13:52:26,506 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-03-17 13:52:26,506 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2025-03-17 13:52:26,506 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-03-17 13:52:26,506 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-03-17 13:52:26,506 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2025-03-17 13:52:26,506 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-17 13:52:26,506 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 13:52:26,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-17 13:52:26,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-17 13:52:26,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-17 13:52:26,506 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-17 13:52:26,506 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-17 13:52:26,506 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-17 13:52:26,506 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-17 13:52:26,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-17 13:52:26,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-03-17 13:52:26,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-03-17 13:52:26,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2025-03-17 13:52:26,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-17 13:52:26,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-03-17 13:52:26,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2025-03-17 13:52:26,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 13:52:26,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 13:52:26,682 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 13:52:26,684 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 13:52:29,502 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L713: call ULTIMATE.dealloc(main_~#i~0#1.base, main_~#i~0#1.offset);havoc main_~#i~0#1.base, main_~#i~0#1.offset; [2025-03-17 13:52:29,584 INFO L? ?]: Removed 1292 outVars from TransFormulas that were not future-live. [2025-03-17 13:52:29,584 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 13:52:29,616 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 13:52:29,616 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 13:52:29,616 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 01:52:29 BoogieIcfgContainer [2025-03-17 13:52:29,617 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 13:52:29,618 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 13:52:29,618 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 13:52:29,621 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 13:52:29,621 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 01:52:25" (1/3) ... [2025-03-17 13:52:29,621 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fc6983 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 01:52:29, skipping insertion in model container [2025-03-17 13:52:29,621 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:52:26" (2/3) ... [2025-03-17 13:52:29,622 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fc6983 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 01:52:29, skipping insertion in model container [2025-03-17 13:52:29,622 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 01:52:29" (3/3) ... [2025-03-17 13:52:29,622 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test7-2.i [2025-03-17 13:52:29,640 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 13:52:29,641 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_SAX_test7-2.i that has 5 procedures, 1254 locations, 1 initial locations, 41 loop locations, and 628 error locations. [2025-03-17 13:52:29,690 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 13:52:29,698 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;@55536e09, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 13:52:29,699 INFO L334 AbstractCegarLoop]: Starting to check reachability of 628 error locations. [2025-03-17 13:52:29,706 INFO L276 IsEmpty]: Start isEmpty. Operand has 1244 states, 611 states have (on average 2.2471358428805237) internal successors, (1373), 1237 states have internal predecessors, (1373), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-03-17 13:52:29,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2025-03-17 13:52:29,709 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:52:29,709 INFO L218 NwaCegarLoop]: trace histogram [1, 1] [2025-03-17 13:52:29,709 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr625REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-17 13:52:29,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:52:29,714 INFO L85 PathProgramCache]: Analyzing trace with hash 45439, now seen corresponding path program 1 times [2025-03-17 13:52:29,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:52:29,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1718620485] [2025-03-17 13:52:29,722 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:52:29,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:52:29,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:52:29,725 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 13:52:29,727 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 13:52:29,852 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-17 13:52:29,860 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-17 13:52:29,860 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:52:29,860 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:52:29,862 INFO L256 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 13:52:29,865 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:52:29,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-17 13:52:29,896 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 13:52:29,897 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:52:29,897 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:52:29,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718620485] [2025-03-17 13:52:29,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1718620485] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:52:29,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:52:29,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-17 13:52:29,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248961637] [2025-03-17 13:52:29,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:52:29,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 13:52:29,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:52:29,919 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 13:52:29,920 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:52:29,922 INFO L87 Difference]: Start difference. First operand has 1244 states, 611 states have (on average 2.2471358428805237) internal successors, (1373), 1237 states have internal predecessors, (1373), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:52:31,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:52:31,387 INFO L93 Difference]: Finished difference Result 1413 states and 1489 transitions. [2025-03-17 13:52:31,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 13:52:31,389 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2025-03-17 13:52:31,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:52:31,400 INFO L225 Difference]: With dead ends: 1413 [2025-03-17 13:52:31,400 INFO L226 Difference]: Without dead ends: 1411 [2025-03-17 13:52:31,401 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:52:31,403 INFO L435 NwaCegarLoop]: 737 mSDtfsCounter, 1143 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1146 SdHoareTripleChecker+Valid, 897 SdHoareTripleChecker+Invalid, 753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-17 13:52:31,403 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1146 Valid, 897 Invalid, 753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 737 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-17 13:52:31,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1411 states. [2025-03-17 13:52:31,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1411 to 1225. [2025-03-17 13:52:31,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1225 states, 611 states have (on average 2.1014729950900164) internal successors, (1284), 1219 states have internal predecessors, (1284), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-17 13:52:31,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 1292 transitions. [2025-03-17 13:52:31,482 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 1292 transitions. Word has length 2 [2025-03-17 13:52:31,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:52:31,482 INFO L471 AbstractCegarLoop]: Abstraction has 1225 states and 1292 transitions. [2025-03-17 13:52:31,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:52:31,483 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 1292 transitions. [2025-03-17 13:52:31,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2025-03-17 13:52:31,483 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:52:31,483 INFO L218 NwaCegarLoop]: trace histogram [1, 1] [2025-03-17 13:52:31,492 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 13:52:31,683 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 13:52:31,685 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr626REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-17 13:52:31,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:52:31,685 INFO L85 PathProgramCache]: Analyzing trace with hash 45440, now seen corresponding path program 1 times [2025-03-17 13:52:31,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:52:31,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2066017473] [2025-03-17 13:52:31,686 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:52:31,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:52:31,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:52:31,688 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 13:52:31,688 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 13:52:31,780 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-17 13:52:31,783 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-17 13:52:31,783 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:52:31,783 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:52:31,784 INFO L256 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 13:52:31,785 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:52:31,792 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-17 13:52:31,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:52:31,801 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:52:31,802 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:52:31,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066017473] [2025-03-17 13:52:31,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2066017473] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:52:31,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:52:31,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-17 13:52:31,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984087894] [2025-03-17 13:52:31,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:52:31,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 13:52:31,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:52:31,803 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 13:52:31,803 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:52:31,803 INFO L87 Difference]: Start difference. First operand 1225 states and 1292 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:52:33,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:52:33,708 INFO L93 Difference]: Finished difference Result 1818 states and 1928 transitions. [2025-03-17 13:52:33,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 13:52:33,709 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2025-03-17 13:52:33,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:52:33,713 INFO L225 Difference]: With dead ends: 1818 [2025-03-17 13:52:33,713 INFO L226 Difference]: Without dead ends: 1818 [2025-03-17 13:52:33,713 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:52:33,714 INFO L435 NwaCegarLoop]: 1000 mSDtfsCounter, 633 mSDsluCounter, 675 mSDsCounter, 0 mSdLazyCounter, 887 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 1675 SdHoareTripleChecker+Invalid, 893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-03-17 13:52:33,714 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [633 Valid, 1675 Invalid, 893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 887 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-03-17 13:52:33,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1818 states. [2025-03-17 13:52:33,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1818 to 1432. [2025-03-17 13:52:33,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 819 states have (on average 2.081807081807082) internal successors, (1705), 1426 states have internal predecessors, (1705), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-17 13:52:33,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 1713 transitions. [2025-03-17 13:52:33,747 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 1713 transitions. Word has length 2 [2025-03-17 13:52:33,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:52:33,748 INFO L471 AbstractCegarLoop]: Abstraction has 1432 states and 1713 transitions. [2025-03-17 13:52:33,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:52:33,748 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 1713 transitions. [2025-03-17 13:52:33,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-03-17 13:52:33,748 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:52:33,748 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-17 13:52:33,755 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 13:52:33,948 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 13:52:33,949 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr622REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-17 13:52:33,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:52:33,950 INFO L85 PathProgramCache]: Analyzing trace with hash -944152613, now seen corresponding path program 1 times [2025-03-17 13:52:33,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:52:33,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1574799091] [2025-03-17 13:52:33,951 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:52:33,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:52:33,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:52:33,952 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 13:52:33,953 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 13:52:34,044 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 13:52:34,052 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 13:52:34,052 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:52:34,052 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:52:34,053 INFO L256 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-17 13:52:34,055 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:52:34,060 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-17 13:52:34,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 13:52:34,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-03-17 13:52:34,130 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-17 13:52:34,130 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 13:52:34,145 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 13:52:34,146 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:52:34,146 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:52:34,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574799091] [2025-03-17 13:52:34,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574799091] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:52:34,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:52:34,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 13:52:34,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6109159] [2025-03-17 13:52:34,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:52:34,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:52:34,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:52:34,146 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:52:34,146 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:52:34,147 INFO L87 Difference]: Start difference. First operand 1432 states and 1713 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:52:35,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:52:35,968 INFO L93 Difference]: Finished difference Result 1612 states and 1904 transitions. [2025-03-17 13:52:35,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 13:52:35,968 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2025-03-17 13:52:35,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:52:35,972 INFO L225 Difference]: With dead ends: 1612 [2025-03-17 13:52:35,972 INFO L226 Difference]: Without dead ends: 1612 [2025-03-17 13:52:35,972 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:52:35,973 INFO L435 NwaCegarLoop]: 420 mSDtfsCounter, 2571 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 1094 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2574 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 1118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1094 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-03-17 13:52:35,973 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2574 Valid, 512 Invalid, 1118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1094 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-03-17 13:52:35,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1612 states. [2025-03-17 13:52:35,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1612 to 1213. [2025-03-17 13:52:35,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1213 states, 611 states have (on average 2.0801963993453354) internal successors, (1271), 1207 states have internal predecessors, (1271), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-17 13:52:35,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1213 states to 1213 states and 1279 transitions. [2025-03-17 13:52:35,989 INFO L78 Accepts]: Start accepts. Automaton has 1213 states and 1279 transitions. Word has length 6 [2025-03-17 13:52:35,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:52:35,990 INFO L471 AbstractCegarLoop]: Abstraction has 1213 states and 1279 transitions. [2025-03-17 13:52:35,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:52:35,990 INFO L276 IsEmpty]: Start isEmpty. Operand 1213 states and 1279 transitions. [2025-03-17 13:52:35,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-03-17 13:52:35,990 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:52:35,990 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:52:35,997 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-17 13:52:36,191 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 13:52:36,191 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr619REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-17 13:52:36,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:52:36,192 INFO L85 PathProgramCache]: Analyzing trace with hash 796041379, now seen corresponding path program 1 times [2025-03-17 13:52:36,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:52:36,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1511602052] [2025-03-17 13:52:36,192 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:52:36,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:52:36,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:52:36,194 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 13:52:36,195 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 13:52:36,291 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 13:52:36,299 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 13:52:36,299 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:52:36,299 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:52:36,300 INFO L256 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 13:52:36,305 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:52:36,310 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-17 13:52:36,320 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 13:52:36,320 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:52:36,320 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:52:36,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511602052] [2025-03-17 13:52:36,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511602052] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:52:36,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:52:36,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 13:52:36,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403122234] [2025-03-17 13:52:36,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:52:36,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 13:52:36,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:52:36,321 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 13:52:36,321 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:52:36,321 INFO L87 Difference]: Start difference. First operand 1213 states and 1279 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:52:37,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:52:37,525 INFO L93 Difference]: Finished difference Result 1546 states and 1642 transitions. [2025-03-17 13:52:37,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 13:52:37,525 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2025-03-17 13:52:37,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:52:37,529 INFO L225 Difference]: With dead ends: 1546 [2025-03-17 13:52:37,529 INFO L226 Difference]: Without dead ends: 1546 [2025-03-17 13:52:37,529 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:52:37,530 INFO L435 NwaCegarLoop]: 1140 mSDtfsCounter, 920 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 852 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 1485 SdHoareTripleChecker+Invalid, 902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-17 13:52:37,530 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [923 Valid, 1485 Invalid, 902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 852 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-17 13:52:37,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1546 states. [2025-03-17 13:52:37,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1546 to 1166. [2025-03-17 13:52:37,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1166 states, 611 states have (on average 2.0032733224222588) internal successors, (1224), 1160 states have internal predecessors, (1224), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-17 13:52:37,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 1232 transitions. [2025-03-17 13:52:37,546 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 1232 transitions. Word has length 7 [2025-03-17 13:52:37,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:52:37,546 INFO L471 AbstractCegarLoop]: Abstraction has 1166 states and 1232 transitions. [2025-03-17 13:52:37,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:52:37,547 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 1232 transitions. [2025-03-17 13:52:37,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-03-17 13:52:37,547 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:52:37,547 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:52:37,554 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 13:52:37,748 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 13:52:37,748 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr620REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-17 13:52:37,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:52:37,748 INFO L85 PathProgramCache]: Analyzing trace with hash 796041380, now seen corresponding path program 1 times [2025-03-17 13:52:37,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:52:37,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1265991186] [2025-03-17 13:52:37,749 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:52:37,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:52:37,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:52:37,751 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 13:52:37,751 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 13:52:37,831 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 13:52:37,840 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 13:52:37,841 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:52:37,841 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:52:37,842 INFO L256 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 13:52:37,843 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:52:37,853 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-17 13:52:37,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:52:37,870 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:52:37,870 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:52:37,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265991186] [2025-03-17 13:52:37,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265991186] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:52:37,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:52:37,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 13:52:37,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610274315] [2025-03-17 13:52:37,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:52:37,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 13:52:37,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:52:37,870 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 13:52:37,870 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:52:37,870 INFO L87 Difference]: Start difference. First operand 1166 states and 1232 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:52:39,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:52:39,526 INFO L93 Difference]: Finished difference Result 1636 states and 1735 transitions. [2025-03-17 13:52:39,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 13:52:39,526 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2025-03-17 13:52:39,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:52:39,530 INFO L225 Difference]: With dead ends: 1636 [2025-03-17 13:52:39,530 INFO L226 Difference]: Without dead ends: 1636 [2025-03-17 13:52:39,530 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:52:39,531 INFO L435 NwaCegarLoop]: 1332 mSDtfsCounter, 688 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 821 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 1851 SdHoareTripleChecker+Invalid, 834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-03-17 13:52:39,531 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [688 Valid, 1851 Invalid, 834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 821 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-03-17 13:52:39,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2025-03-17 13:52:39,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1193. [2025-03-17 13:52:39,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1193 states, 648 states have (on average 1.9876543209876543) internal successors, (1288), 1187 states have internal predecessors, (1288), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-17 13:52:39,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1193 states to 1193 states and 1296 transitions. [2025-03-17 13:52:39,545 INFO L78 Accepts]: Start accepts. Automaton has 1193 states and 1296 transitions. Word has length 7 [2025-03-17 13:52:39,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:52:39,545 INFO L471 AbstractCegarLoop]: Abstraction has 1193 states and 1296 transitions. [2025-03-17 13:52:39,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:52:39,545 INFO L276 IsEmpty]: Start isEmpty. Operand 1193 states and 1296 transitions. [2025-03-17 13:52:39,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-03-17 13:52:39,546 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:52:39,546 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:52:39,554 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 13:52:39,746 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 13:52:39,746 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr295REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-17 13:52:39,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:52:39,747 INFO L85 PathProgramCache]: Analyzing trace with hash 460349023, now seen corresponding path program 1 times [2025-03-17 13:52:39,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:52:39,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [427392913] [2025-03-17 13:52:39,747 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:52:39,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:52:39,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:52:39,749 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 13:52:39,750 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 13:52:39,836 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-17 13:52:39,848 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-17 13:52:39,848 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:52:39,848 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:52:39,850 INFO L256 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 13:52:39,851 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:52:39,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:52:39,875 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:52:39,875 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:52:39,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427392913] [2025-03-17 13:52:39,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [427392913] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:52:39,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:52:39,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 13:52:39,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418334583] [2025-03-17 13:52:39,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:52:39,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:52:39,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:52:39,876 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:52:39,876 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:52:39,876 INFO L87 Difference]: Start difference. First operand 1193 states and 1296 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:52:41,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:52:41,252 INFO L93 Difference]: Finished difference Result 1360 states and 1472 transitions. [2025-03-17 13:52:41,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 13:52:41,253 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2025-03-17 13:52:41,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:52:41,256 INFO L225 Difference]: With dead ends: 1360 [2025-03-17 13:52:41,256 INFO L226 Difference]: Without dead ends: 1360 [2025-03-17 13:52:41,256 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:52:41,256 INFO L435 NwaCegarLoop]: 692 mSDtfsCounter, 1141 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 1219 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1144 SdHoareTripleChecker+Valid, 1433 SdHoareTripleChecker+Invalid, 1249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-17 13:52:41,257 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1144 Valid, 1433 Invalid, 1249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1219 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-17 13:52:41,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1360 states. [2025-03-17 13:52:41,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1360 to 1170. [2025-03-17 13:52:41,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1170 states, 648 states have (on average 1.9521604938271604) internal successors, (1265), 1164 states have internal predecessors, (1265), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-17 13:52:41,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1170 states to 1170 states and 1273 transitions. [2025-03-17 13:52:41,269 INFO L78 Accepts]: Start accepts. Automaton has 1170 states and 1273 transitions. Word has length 11 [2025-03-17 13:52:41,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:52:41,270 INFO L471 AbstractCegarLoop]: Abstraction has 1170 states and 1273 transitions. [2025-03-17 13:52:41,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:52:41,270 INFO L276 IsEmpty]: Start isEmpty. Operand 1170 states and 1273 transitions. [2025-03-17 13:52:41,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-03-17 13:52:41,270 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:52:41,270 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:52:41,277 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 13:52:41,470 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 13:52:41,471 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr296REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-17 13:52:41,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:52:41,471 INFO L85 PathProgramCache]: Analyzing trace with hash 460349024, now seen corresponding path program 1 times [2025-03-17 13:52:41,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:52:41,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1811910881] [2025-03-17 13:52:41,471 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:52:41,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:52:41,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:52:41,473 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 13:52:41,474 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 13:52:41,561 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-17 13:52:41,572 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-17 13:52:41,573 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:52:41,573 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:52:41,574 INFO L256 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 13:52:41,575 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:52:41,584 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-17 13:52:41,650 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 13:52:41,650 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:52:41,650 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:52:41,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811910881] [2025-03-17 13:52:41,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1811910881] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:52:41,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:52:41,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 13:52:41,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765250348] [2025-03-17 13:52:41,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:52:41,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:52:41,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:52:41,651 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:52:41,652 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:52:41,652 INFO L87 Difference]: Start difference. First operand 1170 states and 1273 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:52:43,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:52:43,662 INFO L93 Difference]: Finished difference Result 1711 states and 1849 transitions. [2025-03-17 13:52:43,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 13:52:43,663 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2025-03-17 13:52:43,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:52:43,666 INFO L225 Difference]: With dead ends: 1711 [2025-03-17 13:52:43,666 INFO L226 Difference]: Without dead ends: 1711 [2025-03-17 13:52:43,666 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:52:43,666 INFO L435 NwaCegarLoop]: 939 mSDtfsCounter, 612 mSDsluCounter, 1209 mSDsCounter, 0 mSdLazyCounter, 1423 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 612 SdHoareTripleChecker+Valid, 2148 SdHoareTripleChecker+Invalid, 1438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-03-17 13:52:43,666 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [612 Valid, 2148 Invalid, 1438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1423 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-03-17 13:52:43,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1711 states. [2025-03-17 13:52:43,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1711 to 1359. [2025-03-17 13:52:43,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1359 states, 837 states have (on average 1.9378733572281959) internal successors, (1622), 1353 states have internal predecessors, (1622), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-17 13:52:43,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1359 states to 1359 states and 1630 transitions. [2025-03-17 13:52:43,682 INFO L78 Accepts]: Start accepts. Automaton has 1359 states and 1630 transitions. Word has length 11 [2025-03-17 13:52:43,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:52:43,682 INFO L471 AbstractCegarLoop]: Abstraction has 1359 states and 1630 transitions. [2025-03-17 13:52:43,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:52:43,682 INFO L276 IsEmpty]: Start isEmpty. Operand 1359 states and 1630 transitions. [2025-03-17 13:52:43,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-03-17 13:52:43,683 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:52:43,683 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:52:43,691 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 13:52:43,883 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 13:52:43,884 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr104REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-17 13:52:43,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:52:43,884 INFO L85 PathProgramCache]: Analyzing trace with hash 447446555, now seen corresponding path program 1 times [2025-03-17 13:52:43,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:52:43,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1851120049] [2025-03-17 13:52:43,884 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:52:43,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:52:43,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:52:43,886 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 13:52:43,887 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 13:52:43,976 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-17 13:52:43,985 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-17 13:52:43,985 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:52:43,985 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:52:43,986 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 13:52:43,987 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:52:44,022 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 13:52:44,022 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:52:44,022 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:52:44,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851120049] [2025-03-17 13:52:44,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851120049] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:52:44,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:52:44,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 13:52:44,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238206665] [2025-03-17 13:52:44,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:52:44,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 13:52:44,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:52:44,022 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 13:52:44,022 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:52:44,023 INFO L87 Difference]: Start difference. First operand 1359 states and 1630 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:52:44,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:52:44,252 INFO L93 Difference]: Finished difference Result 2070 states and 2546 transitions. [2025-03-17 13:52:44,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 13:52:44,252 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2025-03-17 13:52:44,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:52:44,256 INFO L225 Difference]: With dead ends: 2070 [2025-03-17 13:52:44,256 INFO L226 Difference]: Without dead ends: 2070 [2025-03-17 13:52:44,256 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:52:44,257 INFO L435 NwaCegarLoop]: 1372 mSDtfsCounter, 601 mSDsluCounter, 1074 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 601 SdHoareTripleChecker+Valid, 2446 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 13:52:44,257 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [601 Valid, 2446 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 13:52:44,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2070 states. [2025-03-17 13:52:44,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2070 to 1722. [2025-03-17 13:52:44,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1722 states, 1200 states have (on average 1.9058333333333333) internal successors, (2287), 1716 states have internal predecessors, (2287), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-17 13:52:44,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1722 states to 1722 states and 2295 transitions. [2025-03-17 13:52:44,275 INFO L78 Accepts]: Start accepts. Automaton has 1722 states and 2295 transitions. Word has length 11 [2025-03-17 13:52:44,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:52:44,275 INFO L471 AbstractCegarLoop]: Abstraction has 1722 states and 2295 transitions. [2025-03-17 13:52:44,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:52:44,275 INFO L276 IsEmpty]: Start isEmpty. Operand 1722 states and 2295 transitions. [2025-03-17 13:52:44,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-03-17 13:52:44,277 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:52:44,277 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:52:44,286 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-17 13:52:44,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:52:44,478 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-17 13:52:44,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:52:44,478 INFO L85 PathProgramCache]: Analyzing trace with hash 987218890, now seen corresponding path program 1 times [2025-03-17 13:52:44,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:52:44,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [384808893] [2025-03-17 13:52:44,478 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:52:44,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:52:44,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:52:44,480 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:52:44,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-17 13:52:44,562 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-17 13:52:44,572 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-17 13:52:44,572 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:52:44,572 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:52:44,573 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 13:52:44,575 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:52:44,610 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 13:52:44,610 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:52:44,610 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:52:44,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384808893] [2025-03-17 13:52:44,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384808893] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:52:44,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:52:44,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 13:52:44,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696581239] [2025-03-17 13:52:44,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:52:44,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:52:44,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:52:44,611 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:52:44,611 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:52:44,611 INFO L87 Difference]: Start difference. First operand 1722 states and 2295 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:52:45,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:52:45,001 INFO L93 Difference]: Finished difference Result 2071 states and 2546 transitions. [2025-03-17 13:52:45,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 13:52:45,002 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2025-03-17 13:52:45,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:52:45,007 INFO L225 Difference]: With dead ends: 2071 [2025-03-17 13:52:45,007 INFO L226 Difference]: Without dead ends: 2071 [2025-03-17 13:52:45,007 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:52:45,007 INFO L435 NwaCegarLoop]: 1371 mSDtfsCounter, 606 mSDsluCounter, 2339 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 606 SdHoareTripleChecker+Valid, 3710 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-17 13:52:45,007 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [606 Valid, 3710 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-17 13:52:45,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2071 states. [2025-03-17 13:52:45,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2071 to 1724. [2025-03-17 13:52:45,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1724 states, 1202 states have (on average 1.9034941763727122) internal successors, (2288), 1718 states have internal predecessors, (2288), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-17 13:52:45,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1724 states to 1724 states and 2296 transitions. [2025-03-17 13:52:45,038 INFO L78 Accepts]: Start accepts. Automaton has 1724 states and 2296 transitions. Word has length 12 [2025-03-17 13:52:45,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:52:45,038 INFO L471 AbstractCegarLoop]: Abstraction has 1724 states and 2296 transitions. [2025-03-17 13:52:45,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:52:45,039 INFO L276 IsEmpty]: Start isEmpty. Operand 1724 states and 2296 transitions. [2025-03-17 13:52:45,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-03-17 13:52:45,039 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:52:45,039 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:52:45,045 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-03-17 13:52:45,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:52:45,240 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr272REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-17 13:52:45,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:52:45,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1385873831, now seen corresponding path program 1 times [2025-03-17 13:52:45,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:52:45,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1940825611] [2025-03-17 13:52:45,240 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:52:45,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:52:45,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:52:45,242 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:52:45,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-17 13:52:45,329 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-17 13:52:45,339 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-17 13:52:45,339 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:52:45,339 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:52:45,341 INFO L256 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 13:52:45,342 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:52:45,355 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 13:52:45,356 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:52:45,356 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:52:45,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940825611] [2025-03-17 13:52:45,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1940825611] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:52:45,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:52:45,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 13:52:45,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178303660] [2025-03-17 13:52:45,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:52:45,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:52:45,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:52:45,357 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:52:45,357 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:52:45,357 INFO L87 Difference]: Start difference. First operand 1724 states and 2296 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:52:45,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:52:45,412 INFO L93 Difference]: Finished difference Result 1652 states and 2173 transitions. [2025-03-17 13:52:45,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 13:52:45,413 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2025-03-17 13:52:45,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:52:45,416 INFO L225 Difference]: With dead ends: 1652 [2025-03-17 13:52:45,416 INFO L226 Difference]: Without dead ends: 1652 [2025-03-17 13:52:45,416 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:52:45,417 INFO L435 NwaCegarLoop]: 1111 mSDtfsCounter, 45 mSDsluCounter, 2199 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 3310 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 13:52:45,418 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 3310 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 13:52:45,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1652 states. [2025-03-17 13:52:45,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1652 to 1652. [2025-03-17 13:52:45,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1652 states, 1149 states have (on average 1.8842471714534377) internal successors, (2165), 1646 states have internal predecessors, (2165), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-17 13:52:45,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1652 states to 1652 states and 2173 transitions. [2025-03-17 13:52:45,441 INFO L78 Accepts]: Start accepts. Automaton has 1652 states and 2173 transitions. Word has length 12 [2025-03-17 13:52:45,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:52:45,441 INFO L471 AbstractCegarLoop]: Abstraction has 1652 states and 2173 transitions. [2025-03-17 13:52:45,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:52:45,442 INFO L276 IsEmpty]: Start isEmpty. Operand 1652 states and 2173 transitions. [2025-03-17 13:52:45,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-03-17 13:52:45,442 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:52:45,442 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:52:45,448 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-03-17 13:52:45,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:52:45,643 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-17 13:52:45,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:52:45,643 INFO L85 PathProgramCache]: Analyzing trace with hash 499377846, now seen corresponding path program 1 times [2025-03-17 13:52:45,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:52:45,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [551541825] [2025-03-17 13:52:45,644 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:52:45,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:52:45,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:52:45,645 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:52:45,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-17 13:52:45,744 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-17 13:52:45,756 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-17 13:52:45,756 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:52:45,756 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:52:45,758 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 13:52:45,759 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:52:45,766 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 13:52:45,766 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 13:52:45,767 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 13:52:45,770 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2025-03-17 13:52:45,804 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 13:52:45,804 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2025-03-17 13:52:45,812 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 13:52:45,812 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:52:45,812 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:52:45,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551541825] [2025-03-17 13:52:45,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551541825] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:52:45,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:52:45,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 13:52:45,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798113527] [2025-03-17 13:52:45,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:52:45,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:52:45,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:52:45,813 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:52:45,813 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:52:45,813 INFO L87 Difference]: Start difference. First operand 1652 states and 2173 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:52:45,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:52:45,969 INFO L93 Difference]: Finished difference Result 2372 states and 2730 transitions. [2025-03-17 13:52:45,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 13:52:45,970 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2025-03-17 13:52:45,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:52:45,974 INFO L225 Difference]: With dead ends: 2372 [2025-03-17 13:52:45,974 INFO L226 Difference]: Without dead ends: 2372 [2025-03-17 13:52:45,974 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:52:45,975 INFO L435 NwaCegarLoop]: 1327 mSDtfsCounter, 1066 mSDsluCounter, 2430 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1069 SdHoareTripleChecker+Valid, 3757 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 13:52:45,975 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1069 Valid, 3757 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 13:52:45,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2372 states. [2025-03-17 13:52:45,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2372 to 1343. [2025-03-17 13:52:45,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1343 states, 840 states have (on average 1.8976190476190475) internal successors, (1594), 1337 states have internal predecessors, (1594), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-17 13:52:45,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1343 states to 1343 states and 1602 transitions. [2025-03-17 13:52:45,989 INFO L78 Accepts]: Start accepts. Automaton has 1343 states and 1602 transitions. Word has length 13 [2025-03-17 13:52:45,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:52:45,989 INFO L471 AbstractCegarLoop]: Abstraction has 1343 states and 1602 transitions. [2025-03-17 13:52:45,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:52:45,989 INFO L276 IsEmpty]: Start isEmpty. Operand 1343 states and 1602 transitions. [2025-03-17 13:52:45,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-03-17 13:52:45,989 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:52:45,990 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:52:45,996 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-03-17 13:52:46,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:52:46,194 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr611REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-17 13:52:46,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:52:46,194 INFO L85 PathProgramCache]: Analyzing trace with hash -232936337, now seen corresponding path program 1 times [2025-03-17 13:52:46,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:52:46,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [10382214] [2025-03-17 13:52:46,195 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:52:46,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:52:46,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:52:46,197 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:52:46,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-17 13:52:46,302 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-17 13:52:46,322 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-17 13:52:46,322 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:52:46,322 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:52:46,326 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 13:52:46,327 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:52:46,332 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-17 13:52:46,362 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 13:52:46,362 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:52:46,362 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:52:46,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10382214] [2025-03-17 13:52:46,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10382214] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:52:46,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:52:46,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 13:52:46,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863730963] [2025-03-17 13:52:46,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:52:46,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:52:46,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:52:46,363 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:52:46,363 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:52:46,363 INFO L87 Difference]: Start difference. First operand 1343 states and 1602 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:52:47,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:52:47,717 INFO L93 Difference]: Finished difference Result 1714 states and 2067 transitions. [2025-03-17 13:52:47,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 13:52:47,717 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-03-17 13:52:47,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:52:47,720 INFO L225 Difference]: With dead ends: 1714 [2025-03-17 13:52:47,720 INFO L226 Difference]: Without dead ends: 1714 [2025-03-17 13:52:47,721 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:52:47,721 INFO L435 NwaCegarLoop]: 676 mSDtfsCounter, 885 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 1293 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 1478 SdHoareTripleChecker+Invalid, 1320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-17 13:52:47,721 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [888 Valid, 1478 Invalid, 1320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1293 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-17 13:52:47,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1714 states. [2025-03-17 13:52:47,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1714 to 1320. [2025-03-17 13:52:47,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1320 states, 840 states have (on average 1.8428571428571427) internal successors, (1548), 1314 states have internal predecessors, (1548), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-17 13:52:47,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1320 states to 1320 states and 1556 transitions. [2025-03-17 13:52:47,732 INFO L78 Accepts]: Start accepts. Automaton has 1320 states and 1556 transitions. Word has length 16 [2025-03-17 13:52:47,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:52:47,732 INFO L471 AbstractCegarLoop]: Abstraction has 1320 states and 1556 transitions. [2025-03-17 13:52:47,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:52:47,732 INFO L276 IsEmpty]: Start isEmpty. Operand 1320 states and 1556 transitions. [2025-03-17 13:52:47,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-03-17 13:52:47,732 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:52:47,732 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:52:47,740 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-03-17 13:52:47,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:52:47,933 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr612REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-17 13:52:47,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:52:47,933 INFO L85 PathProgramCache]: Analyzing trace with hash -232936336, now seen corresponding path program 1 times [2025-03-17 13:52:47,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:52:47,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1355762157] [2025-03-17 13:52:47,934 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:52:47,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:52:47,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:52:47,935 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:52:47,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-17 13:52:48,031 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-17 13:52:48,052 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-17 13:52:48,052 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:52:48,052 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:52:48,055 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 13:52:48,056 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:52:48,063 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-17 13:52:48,127 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 13:52:48,128 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:52:48,128 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:52:48,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355762157] [2025-03-17 13:52:48,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355762157] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:52:48,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:52:48,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 13:52:48,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011765173] [2025-03-17 13:52:48,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:52:48,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:52:48,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:52:48,128 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:52:48,128 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:52:48,128 INFO L87 Difference]: Start difference. First operand 1320 states and 1556 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:52:50,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:52:50,002 INFO L93 Difference]: Finished difference Result 1955 states and 2309 transitions. [2025-03-17 13:52:50,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 13:52:50,003 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-03-17 13:52:50,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:52:50,007 INFO L225 Difference]: With dead ends: 1955 [2025-03-17 13:52:50,007 INFO L226 Difference]: Without dead ends: 1955 [2025-03-17 13:52:50,007 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:52:50,007 INFO L435 NwaCegarLoop]: 1271 mSDtfsCounter, 726 mSDsluCounter, 1283 mSDsCounter, 0 mSdLazyCounter, 1478 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 2554 SdHoareTripleChecker+Invalid, 1500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-03-17 13:52:50,007 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [726 Valid, 2554 Invalid, 1500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1478 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-03-17 13:52:50,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1955 states. [2025-03-17 13:52:50,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1955 to 1434. [2025-03-17 13:52:50,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1434 states, 954 states have (on average 1.7672955974842768) internal successors, (1686), 1428 states have internal predecessors, (1686), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-17 13:52:50,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1434 states to 1434 states and 1694 transitions. [2025-03-17 13:52:50,022 INFO L78 Accepts]: Start accepts. Automaton has 1434 states and 1694 transitions. Word has length 16 [2025-03-17 13:52:50,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:52:50,022 INFO L471 AbstractCegarLoop]: Abstraction has 1434 states and 1694 transitions. [2025-03-17 13:52:50,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:52:50,022 INFO L276 IsEmpty]: Start isEmpty. Operand 1434 states and 1694 transitions. [2025-03-17 13:52:50,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2025-03-17 13:52:50,025 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:52:50,025 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:52:50,032 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-03-17 13:52:50,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:52:50,225 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr612REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-17 13:52:50,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:52:50,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1675875935, now seen corresponding path program 1 times [2025-03-17 13:52:50,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:52:50,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1229961665] [2025-03-17 13:52:50,226 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:52:50,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:52:50,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:52:50,228 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:52:50,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-17 13:52:50,331 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-03-17 13:52:50,379 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-03-17 13:52:50,379 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:52:50,379 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:52:50,386 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-17 13:52:50,388 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:52:50,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-17 13:52:50,535 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:52:50,535 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 13:52:50,857 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:52:50,858 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:52:50,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229961665] [2025-03-17 13:52:50,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229961665] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 13:52:50,858 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-17 13:52:50,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2025-03-17 13:52:50,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941915459] [2025-03-17 13:52:50,858 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-17 13:52:50,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 13:52:50,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:52:50,858 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 13:52:50,858 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-17 13:52:50,858 INFO L87 Difference]: Start difference. First operand 1434 states and 1694 transitions. Second operand has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:52:56,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:52:56,451 INFO L93 Difference]: Finished difference Result 2311 states and 2799 transitions. [2025-03-17 13:52:56,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 13:52:56,452 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2025-03-17 13:52:56,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:52:56,456 INFO L225 Difference]: With dead ends: 2311 [2025-03-17 13:52:56,457 INFO L226 Difference]: Without dead ends: 2311 [2025-03-17 13:52:56,457 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2025-03-17 13:52:56,457 INFO L435 NwaCegarLoop]: 1298 mSDtfsCounter, 2373 mSDsluCounter, 2187 mSDsCounter, 0 mSdLazyCounter, 2305 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2374 SdHoareTripleChecker+Valid, 3485 SdHoareTripleChecker+Invalid, 2332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 2305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2025-03-17 13:52:56,457 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2374 Valid, 3485 Invalid, 2332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 2305 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2025-03-17 13:52:56,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2311 states. [2025-03-17 13:52:56,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2311 to 1598. [2025-03-17 13:52:56,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1598 states, 1118 states have (on average 1.7155635062611807) internal successors, (1918), 1592 states have internal predecessors, (1918), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-17 13:52:56,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1598 states to 1598 states and 1926 transitions. [2025-03-17 13:52:56,472 INFO L78 Accepts]: Start accepts. Automaton has 1598 states and 1926 transitions. Word has length 35 [2025-03-17 13:52:56,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:52:56,472 INFO L471 AbstractCegarLoop]: Abstraction has 1598 states and 1926 transitions. [2025-03-17 13:52:56,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:52:56,472 INFO L276 IsEmpty]: Start isEmpty. Operand 1598 states and 1926 transitions. [2025-03-17 13:52:56,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2025-03-17 13:52:56,473 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:52:56,473 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:52:56,484 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-03-17 13:52:56,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:52:56,678 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr530REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-17 13:52:56,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:52:56,678 INFO L85 PathProgramCache]: Analyzing trace with hash 850391511, now seen corresponding path program 1 times [2025-03-17 13:52:56,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:52:56,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1874718243] [2025-03-17 13:52:56,679 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:52:56,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:52:56,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:52:56,680 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:52:56,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-03-17 13:52:56,788 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 50 statements into 1 equivalence classes. [2025-03-17 13:52:56,838 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 50 of 50 statements. [2025-03-17 13:52:56,838 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:52:56,838 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:52:56,845 INFO L256 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 13:52:56,847 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:52:56,880 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 13:52:56,880 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:52:56,880 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:52:56,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874718243] [2025-03-17 13:52:56,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874718243] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:52:56,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:52:56,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 13:52:56,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114033413] [2025-03-17 13:52:56,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:52:56,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:52:56,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:52:56,881 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:52:56,881 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:52:56,881 INFO L87 Difference]: Start difference. First operand 1598 states and 1926 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:52:56,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:52:56,945 INFO L93 Difference]: Finished difference Result 1287 states and 1490 transitions. [2025-03-17 13:52:56,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 13:52:56,946 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2025-03-17 13:52:56,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:52:56,949 INFO L225 Difference]: With dead ends: 1287 [2025-03-17 13:52:56,949 INFO L226 Difference]: Without dead ends: 1287 [2025-03-17 13:52:56,949 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:52:56,949 INFO L435 NwaCegarLoop]: 1048 mSDtfsCounter, 56 mSDsluCounter, 2023 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 3071 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 13:52:56,949 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 3071 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 13:52:56,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1287 states. [2025-03-17 13:52:56,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1287 to 1285. [2025-03-17 13:52:56,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1285 states, 828 states have (on average 1.78743961352657) internal successors, (1480), 1279 states have internal predecessors, (1480), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-17 13:52:56,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1285 states to 1285 states and 1488 transitions. [2025-03-17 13:52:56,963 INFO L78 Accepts]: Start accepts. Automaton has 1285 states and 1488 transitions. Word has length 50 [2025-03-17 13:52:56,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:52:56,963 INFO L471 AbstractCegarLoop]: Abstraction has 1285 states and 1488 transitions. [2025-03-17 13:52:56,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:52:56,963 INFO L276 IsEmpty]: Start isEmpty. Operand 1285 states and 1488 transitions. [2025-03-17 13:52:56,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2025-03-17 13:52:56,964 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:52:56,964 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:52:56,973 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-03-17 13:52:57,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:52:57,168 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr530REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-17 13:52:57,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:52:57,169 INFO L85 PathProgramCache]: Analyzing trace with hash -243853937, now seen corresponding path program 1 times [2025-03-17 13:52:57,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:52:57,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [382550971] [2025-03-17 13:52:57,169 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:52:57,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:52:57,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:52:57,171 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:52:57,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-03-17 13:52:57,294 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-03-17 13:52:57,369 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-03-17 13:52:57,369 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:52:57,370 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:52:57,380 INFO L256 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-17 13:52:57,382 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:52:57,387 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-17 13:52:57,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 13:52:57,727 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-03-17 13:52:57,738 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-17 13:52:57,738 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 13:52:57,740 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 13:52:57,740 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:52:57,740 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:52:57,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382550971] [2025-03-17 13:52:57,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382550971] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:52:57,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:52:57,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 13:52:57,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140678678] [2025-03-17 13:52:57,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:52:57,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 13:52:57,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:52:57,741 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 13:52:57,741 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:52:57,741 INFO L87 Difference]: Start difference. First operand 1285 states and 1488 transitions. Second operand has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:52:59,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:52:59,572 INFO L93 Difference]: Finished difference Result 1633 states and 1953 transitions. [2025-03-17 13:52:59,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 13:52:59,572 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2025-03-17 13:52:59,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:52:59,575 INFO L225 Difference]: With dead ends: 1633 [2025-03-17 13:52:59,575 INFO L226 Difference]: Without dead ends: 1633 [2025-03-17 13:52:59,575 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2025-03-17 13:52:59,576 INFO L435 NwaCegarLoop]: 509 mSDtfsCounter, 1116 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 1547 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1119 SdHoareTripleChecker+Valid, 1041 SdHoareTripleChecker+Invalid, 1589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-03-17 13:52:59,576 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1119 Valid, 1041 Invalid, 1589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1547 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-03-17 13:52:59,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1633 states. [2025-03-17 13:52:59,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1633 to 1210. [2025-03-17 13:52:59,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1210 states, 791 states have (on average 1.729456384323641) internal successors, (1368), 1204 states have internal predecessors, (1368), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-17 13:52:59,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1376 transitions. [2025-03-17 13:52:59,585 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1376 transitions. Word has length 58 [2025-03-17 13:52:59,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:52:59,585 INFO L471 AbstractCegarLoop]: Abstraction has 1210 states and 1376 transitions. [2025-03-17 13:52:59,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:52:59,585 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1376 transitions. [2025-03-17 13:52:59,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2025-03-17 13:52:59,585 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:52:59,585 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:52:59,595 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-03-17 13:52:59,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:52:59,786 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr523REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-17 13:52:59,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:52:59,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1759338961, now seen corresponding path program 1 times [2025-03-17 13:52:59,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:52:59,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [564558282] [2025-03-17 13:52:59,787 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:52:59,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:52:59,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:52:59,788 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:52:59,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-03-17 13:52:59,905 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 63 statements into 1 equivalence classes. [2025-03-17 13:52:59,961 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 63 of 63 statements. [2025-03-17 13:52:59,961 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:52:59,961 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:52:59,969 INFO L256 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-17 13:52:59,971 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:52:59,976 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-17 13:52:59,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-17 13:53:00,000 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-03-17 13:53:00,008 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 13:53:00,008 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:53:00,008 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:53:00,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564558282] [2025-03-17 13:53:00,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564558282] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:53:00,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:53:00,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 13:53:00,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492852128] [2025-03-17 13:53:00,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:53:00,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 13:53:00,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:53:00,009 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 13:53:00,009 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:53:00,009 INFO L87 Difference]: Start difference. First operand 1210 states and 1376 transitions. Second operand has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:53:01,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:53:01,410 INFO L93 Difference]: Finished difference Result 1209 states and 1375 transitions. [2025-03-17 13:53:01,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 13:53:01,414 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2025-03-17 13:53:01,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:53:01,416 INFO L225 Difference]: With dead ends: 1209 [2025-03-17 13:53:01,416 INFO L226 Difference]: Without dead ends: 1209 [2025-03-17 13:53:01,416 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-17 13:53:01,417 INFO L435 NwaCegarLoop]: 1020 mSDtfsCounter, 2 mSDsluCounter, 1600 mSDsCounter, 0 mSdLazyCounter, 1467 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2620 SdHoareTripleChecker+Invalid, 1468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-17 13:53:01,418 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2620 Invalid, 1468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1467 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-17 13:53:01,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1209 states. [2025-03-17 13:53:01,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1209 to 1209. [2025-03-17 13:53:01,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1209 states, 791 states have (on average 1.7281921618204803) internal successors, (1367), 1203 states have internal predecessors, (1367), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-17 13:53:01,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1209 states to 1209 states and 1375 transitions. [2025-03-17 13:53:01,426 INFO L78 Accepts]: Start accepts. Automaton has 1209 states and 1375 transitions. Word has length 63 [2025-03-17 13:53:01,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:53:01,427 INFO L471 AbstractCegarLoop]: Abstraction has 1209 states and 1375 transitions. [2025-03-17 13:53:01,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:53:01,427 INFO L276 IsEmpty]: Start isEmpty. Operand 1209 states and 1375 transitions. [2025-03-17 13:53:01,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2025-03-17 13:53:01,427 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:53:01,427 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:53:01,437 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-03-17 13:53:01,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:53:01,628 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr524REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-17 13:53:01,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:53:01,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1759338962, now seen corresponding path program 1 times [2025-03-17 13:53:01,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:53:01,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [334392893] [2025-03-17 13:53:01,628 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:53:01,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:53:01,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:53:01,630 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:53:01,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-03-17 13:53:01,746 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 63 statements into 1 equivalence classes. [2025-03-17 13:53:01,800 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 63 of 63 statements. [2025-03-17 13:53:01,800 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:53:01,800 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:53:01,807 INFO L256 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-17 13:53:01,809 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:53:01,815 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-17 13:53:01,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-17 13:53:01,830 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-03-17 13:53:01,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2025-03-17 13:53:01,872 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 13:53:01,872 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:53:01,872 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:53:01,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334392893] [2025-03-17 13:53:01,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334392893] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:53:01,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:53:01,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 13:53:01,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755125071] [2025-03-17 13:53:01,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:53:01,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 13:53:01,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:53:01,874 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 13:53:01,874 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:53:01,874 INFO L87 Difference]: Start difference. First operand 1209 states and 1375 transitions. Second operand has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:53:03,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:53:03,534 INFO L93 Difference]: Finished difference Result 1208 states and 1374 transitions. [2025-03-17 13:53:03,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 13:53:03,535 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2025-03-17 13:53:03,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:53:03,537 INFO L225 Difference]: With dead ends: 1208 [2025-03-17 13:53:03,537 INFO L226 Difference]: Without dead ends: 1208 [2025-03-17 13:53:03,537 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-17 13:53:03,537 INFO L435 NwaCegarLoop]: 1020 mSDtfsCounter, 1 mSDsluCounter, 1641 mSDsCounter, 0 mSdLazyCounter, 1423 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2661 SdHoareTripleChecker+Invalid, 1424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-03-17 13:53:03,537 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2661 Invalid, 1424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1423 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-03-17 13:53:03,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1208 states. [2025-03-17 13:53:03,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1208 to 1208. [2025-03-17 13:53:03,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1208 states, 790 states have (on average 1.729113924050633) internal successors, (1366), 1202 states have internal predecessors, (1366), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-17 13:53:03,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1208 states to 1208 states and 1374 transitions. [2025-03-17 13:53:03,546 INFO L78 Accepts]: Start accepts. Automaton has 1208 states and 1374 transitions. Word has length 63 [2025-03-17 13:53:03,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:53:03,546 INFO L471 AbstractCegarLoop]: Abstraction has 1208 states and 1374 transitions. [2025-03-17 13:53:03,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:53:03,551 INFO L276 IsEmpty]: Start isEmpty. Operand 1208 states and 1374 transitions. [2025-03-17 13:53:03,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-03-17 13:53:03,551 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:53:03,551 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:53:03,561 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-03-17 13:53:03,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:53:03,752 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr519REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-17 13:53:03,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:53:03,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1782614670, now seen corresponding path program 1 times [2025-03-17 13:53:03,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:53:03,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [372392310] [2025-03-17 13:53:03,753 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:53:03,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:53:03,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:53:03,769 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:53:03,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-03-17 13:53:03,897 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 71 statements into 1 equivalence classes. [2025-03-17 13:53:03,950 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 71 of 71 statements. [2025-03-17 13:53:03,950 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:53:03,950 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:53:03,958 INFO L256 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-17 13:53:03,960 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:53:03,969 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-17 13:53:04,015 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-03-17 13:53:04,025 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 13:53:04,025 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:53:04,025 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:53:04,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372392310] [2025-03-17 13:53:04,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372392310] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:53:04,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:53:04,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 13:53:04,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277369868] [2025-03-17 13:53:04,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:53:04,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 13:53:04,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:53:04,026 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 13:53:04,026 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-17 13:53:04,026 INFO L87 Difference]: Start difference. First operand 1208 states and 1374 transitions. Second operand has 7 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 13:53:05,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:53:05,715 INFO L93 Difference]: Finished difference Result 1220 states and 1389 transitions. [2025-03-17 13:53:05,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 13:53:05,719 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2025-03-17 13:53:05,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:53:05,722 INFO L225 Difference]: With dead ends: 1220 [2025-03-17 13:53:05,723 INFO L226 Difference]: Without dead ends: 1220 [2025-03-17 13:53:05,723 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2025-03-17 13:53:05,723 INFO L435 NwaCegarLoop]: 1010 mSDtfsCounter, 8 mSDsluCounter, 2677 mSDsCounter, 0 mSdLazyCounter, 1425 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 3687 SdHoareTripleChecker+Invalid, 1431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-03-17 13:53:05,723 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 3687 Invalid, 1431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1425 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-03-17 13:53:05,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2025-03-17 13:53:05,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 1214. [2025-03-17 13:53:05,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1214 states, 795 states have (on average 1.7270440251572328) internal successors, (1373), 1207 states have internal predecessors, (1373), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2025-03-17 13:53:05,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1214 states to 1214 states and 1384 transitions. [2025-03-17 13:53:05,734 INFO L78 Accepts]: Start accepts. Automaton has 1214 states and 1384 transitions. Word has length 71 [2025-03-17 13:53:05,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:53:05,735 INFO L471 AbstractCegarLoop]: Abstraction has 1214 states and 1384 transitions. [2025-03-17 13:53:05,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 13:53:05,735 INFO L276 IsEmpty]: Start isEmpty. Operand 1214 states and 1384 transitions. [2025-03-17 13:53:05,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-03-17 13:53:05,735 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:53:05,735 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:53:05,744 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-03-17 13:53:05,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:53:05,936 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr520REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-17 13:53:05,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:53:05,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1782614671, now seen corresponding path program 1 times [2025-03-17 13:53:05,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:53:05,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1582406425] [2025-03-17 13:53:05,936 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:53:05,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:53:05,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:53:05,938 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:53:05,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-03-17 13:53:06,054 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 71 statements into 1 equivalence classes. [2025-03-17 13:53:06,113 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 71 of 71 statements. [2025-03-17 13:53:06,113 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:53:06,113 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:53:06,122 INFO L256 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 13:53:06,123 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:53:06,136 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 13:53:06,136 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:53:06,136 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:53:06,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582406425] [2025-03-17 13:53:06,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1582406425] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:53:06,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:53:06,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 13:53:06,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842613974] [2025-03-17 13:53:06,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:53:06,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:53:06,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:53:06,137 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:53:06,137 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:53:06,137 INFO L87 Difference]: Start difference. First operand 1214 states and 1384 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 13:53:06,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:53:06,162 INFO L93 Difference]: Finished difference Result 1211 states and 1378 transitions. [2025-03-17 13:53:06,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 13:53:06,163 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2025-03-17 13:53:06,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:53:06,165 INFO L225 Difference]: With dead ends: 1211 [2025-03-17 13:53:06,165 INFO L226 Difference]: Without dead ends: 1211 [2025-03-17 13:53:06,165 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:53:06,165 INFO L435 NwaCegarLoop]: 1020 mSDtfsCounter, 0 mSDsluCounter, 2035 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3055 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 13:53:06,165 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3055 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 13:53:06,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2025-03-17 13:53:06,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 1211. [2025-03-17 13:53:06,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1211 states, 792 states have (on average 1.7285353535353536) internal successors, (1369), 1205 states have internal predecessors, (1369), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-03-17 13:53:06,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1211 states to 1211 states and 1378 transitions. [2025-03-17 13:53:06,182 INFO L78 Accepts]: Start accepts. Automaton has 1211 states and 1378 transitions. Word has length 71 [2025-03-17 13:53:06,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:53:06,185 INFO L471 AbstractCegarLoop]: Abstraction has 1211 states and 1378 transitions. [2025-03-17 13:53:06,185 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 13:53:06,186 INFO L276 IsEmpty]: Start isEmpty. Operand 1211 states and 1378 transitions. [2025-03-17 13:53:06,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2025-03-17 13:53:06,186 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:53:06,186 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:53:06,196 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-03-17 13:53:06,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:53:06,387 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr519REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-17 13:53:06,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:53:06,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1479470013, now seen corresponding path program 1 times [2025-03-17 13:53:06,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:53:06,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [620118186] [2025-03-17 13:53:06,387 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:53:06,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:53:06,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:53:06,389 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:53:06,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-03-17 13:53:06,520 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 72 statements into 1 equivalence classes. [2025-03-17 13:53:06,576 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 72 of 72 statements. [2025-03-17 13:53:06,576 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:53:06,576 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:53:06,584 INFO L256 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 13:53:06,585 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:53:06,600 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:53:06,600 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 13:53:06,637 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:53:06,637 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:53:06,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620118186] [2025-03-17 13:53:06,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620118186] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 13:53:06,638 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-17 13:53:06,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2025-03-17 13:53:06,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642515648] [2025-03-17 13:53:06,638 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-17 13:53:06,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 13:53:06,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:53:06,639 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 13:53:06,639 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-03-17 13:53:06,639 INFO L87 Difference]: Start difference. First operand 1211 states and 1378 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 13:53:06,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:53:06,724 INFO L93 Difference]: Finished difference Result 1223 states and 1395 transitions. [2025-03-17 13:53:06,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 13:53:06,725 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 72 [2025-03-17 13:53:06,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:53:06,726 INFO L225 Difference]: With dead ends: 1223 [2025-03-17 13:53:06,726 INFO L226 Difference]: Without dead ends: 1223 [2025-03-17 13:53:06,727 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2025-03-17 13:53:06,727 INFO L435 NwaCegarLoop]: 1020 mSDtfsCounter, 6 mSDsluCounter, 4066 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 5086 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 13:53:06,727 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 5086 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 13:53:06,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2025-03-17 13:53:06,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 1221. [2025-03-17 13:53:06,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1221 states, 801 states have (on average 1.7278401997503121) internal successors, (1384), 1214 states have internal predecessors, (1384), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-03-17 13:53:06,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1221 states to 1221 states and 1393 transitions. [2025-03-17 13:53:06,737 INFO L78 Accepts]: Start accepts. Automaton has 1221 states and 1393 transitions. Word has length 72 [2025-03-17 13:53:06,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:53:06,738 INFO L471 AbstractCegarLoop]: Abstraction has 1221 states and 1393 transitions. [2025-03-17 13:53:06,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 13:53:06,738 INFO L276 IsEmpty]: Start isEmpty. Operand 1221 states and 1393 transitions. [2025-03-17 13:53:06,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2025-03-17 13:53:06,738 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:53:06,738 INFO L218 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:53:06,749 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-03-17 13:53:06,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:53:06,939 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr519REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-17 13:53:06,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:53:06,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1553539506, now seen corresponding path program 2 times [2025-03-17 13:53:06,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:53:06,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [627905737] [2025-03-17 13:53:06,940 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 13:53:06,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:53:06,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:53:06,941 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:53:06,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-03-17 13:53:07,072 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 75 statements into 2 equivalence classes. [2025-03-17 13:53:37,882 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 75 of 75 statements. [2025-03-17 13:53:37,882 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 13:53:37,882 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:53:37,900 INFO L256 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-03-17 13:53:37,903 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:53:37,960 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-17 13:53:37,961 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 13:53:37,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-17 13:53:38,068 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-17 13:53:38,068 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2025-03-17 13:53:38,095 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2025-03-17 13:53:38,106 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-17 13:53:38,106 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 13:53:38,152 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2025-03-17 13:53:38,152 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2025-03-17 13:53:38,200 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:53:38,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627905737] [2025-03-17 13:53:38,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627905737] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 13:53:38,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1656394113] [2025-03-17 13:53:38,200 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 13:53:38,200 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-03-17 13:53:38,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2025-03-17 13:53:38,203 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-03-17 13:53:38,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2025-03-17 13:53:38,417 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 75 statements into 2 equivalence classes. [2025-03-17 13:53:39,206 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 75 of 75 statements. [2025-03-17 13:53:39,206 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 13:53:39,206 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:53:39,240 INFO L256 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-17 13:53:39,242 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:53:39,327 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:53:39,327 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 13:53:39,497 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:53:39,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1656394113] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 13:53:39,497 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 13:53:39,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 24 [2025-03-17 13:53:39,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309039027] [2025-03-17 13:53:39,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 13:53:39,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-17 13:53:39,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:53:39,498 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-17 13:53:39,498 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=552, Unknown=7, NotChecked=0, Total=650 [2025-03-17 13:53:39,499 INFO L87 Difference]: Start difference. First operand 1221 states and 1393 transitions. Second operand has 24 states, 23 states have (on average 6.0) internal successors, (138), 23 states have internal predecessors, (138), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-17 13:53:45,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:53:45,689 INFO L93 Difference]: Finished difference Result 1623 states and 1919 transitions. [2025-03-17 13:53:45,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-03-17 13:53:45,692 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 6.0) internal successors, (138), 23 states have internal predecessors, (138), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 75 [2025-03-17 13:53:45,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:53:45,694 INFO L225 Difference]: With dead ends: 1623 [2025-03-17 13:53:45,694 INFO L226 Difference]: Without dead ends: 1619 [2025-03-17 13:53:45,695 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 488 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=416, Invalid=2332, Unknown=8, NotChecked=0, Total=2756 [2025-03-17 13:53:45,696 INFO L435 NwaCegarLoop]: 656 mSDtfsCounter, 793 mSDsluCounter, 8833 mSDsCounter, 0 mSdLazyCounter, 6778 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 797 SdHoareTripleChecker+Valid, 9489 SdHoareTripleChecker+Invalid, 6803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 6778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2025-03-17 13:53:45,696 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [797 Valid, 9489 Invalid, 6803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 6778 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2025-03-17 13:53:45,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1619 states. [2025-03-17 13:53:45,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1619 to 1229. [2025-03-17 13:53:45,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1229 states, 810 states have (on average 1.7222222222222223) internal successors, (1395), 1222 states have internal predecessors, (1395), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-03-17 13:53:45,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 1404 transitions. [2025-03-17 13:53:45,708 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 1404 transitions. Word has length 75 [2025-03-17 13:53:45,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:53:45,708 INFO L471 AbstractCegarLoop]: Abstraction has 1229 states and 1404 transitions. [2025-03-17 13:53:45,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 6.0) internal successors, (138), 23 states have internal predecessors, (138), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-17 13:53:45,708 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 1404 transitions. [2025-03-17 13:53:45,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2025-03-17 13:53:45,708 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:53:45,709 INFO L218 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:53:45,718 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (24)] Forceful destruction successful, exit code 0 [2025-03-17 13:53:45,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2025-03-17 13:53:46,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:53:46,109 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr520REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-17 13:53:46,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:53:46,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1198888943, now seen corresponding path program 1 times [2025-03-17 13:53:46,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:53:46,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1192326529] [2025-03-17 13:53:46,110 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:53:46,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:53:46,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:53:46,112 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:53:46,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-03-17 13:53:46,279 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 81 statements into 1 equivalence classes. [2025-03-17 13:53:46,371 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 81 of 81 statements. [2025-03-17 13:53:46,371 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:53:46,371 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:53:46,385 INFO L256 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-17 13:53:46,387 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:53:46,472 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:53:46,472 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 13:53:46,801 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:53:46,802 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:53:46,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192326529] [2025-03-17 13:53:46,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1192326529] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 13:53:46,803 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-17 13:53:46,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2025-03-17 13:53:46,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900750524] [2025-03-17 13:53:46,803 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-17 13:53:46,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-03-17 13:53:46,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:53:46,803 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-03-17 13:53:46,803 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2025-03-17 13:53:46,803 INFO L87 Difference]: Start difference. First operand 1229 states and 1404 transitions. Second operand has 26 states, 26 states have (on average 3.5384615384615383) internal successors, (92), 26 states have internal predecessors, (92), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 13:53:47,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:53:47,809 INFO L93 Difference]: Finished difference Result 1253 states and 1443 transitions. [2025-03-17 13:53:47,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-03-17 13:53:47,809 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.5384615384615383) internal successors, (92), 26 states have internal predecessors, (92), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 81 [2025-03-17 13:53:47,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:53:47,811 INFO L225 Difference]: With dead ends: 1253 [2025-03-17 13:53:47,811 INFO L226 Difference]: Without dead ends: 1247 [2025-03-17 13:53:47,811 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=728, Invalid=1434, Unknown=0, NotChecked=0, Total=2162 [2025-03-17 13:53:47,812 INFO L435 NwaCegarLoop]: 1020 mSDtfsCounter, 15 mSDsluCounter, 11188 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 12208 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-17 13:53:47,812 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 12208 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-17 13:53:47,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1247 states. [2025-03-17 13:53:47,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1247 to 1247. [2025-03-17 13:53:47,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1247 states, 828 states have (on average 1.71256038647343) internal successors, (1418), 1240 states have internal predecessors, (1418), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-03-17 13:53:47,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 1427 transitions. [2025-03-17 13:53:47,824 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 1427 transitions. Word has length 81 [2025-03-17 13:53:47,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:53:47,824 INFO L471 AbstractCegarLoop]: Abstraction has 1247 states and 1427 transitions. [2025-03-17 13:53:47,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.5384615384615383) internal successors, (92), 26 states have internal predecessors, (92), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 13:53:47,824 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 1427 transitions. [2025-03-17 13:53:47,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2025-03-17 13:53:47,825 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:53:47,825 INFO L218 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:53:47,836 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2025-03-17 13:53:48,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:53:48,025 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr520REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-17 13:53:48,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:53:48,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1516233519, now seen corresponding path program 2 times [2025-03-17 13:53:48,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:53:48,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2043219195] [2025-03-17 13:53:48,027 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 13:53:48,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:53:48,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:53:48,028 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:53:48,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-03-17 13:53:48,190 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 93 statements into 2 equivalence classes.