./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.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 e4ea247b245ebcaf5e735452e89c4110c7b9dc9b43836e98484a894783fc3462 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 00:37:07,650 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 00:37:07,703 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-09 00:37:07,707 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 00:37:07,710 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 00:37:07,723 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 00:37:07,723 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 00:37:07,723 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 00:37:07,724 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 00:37:07,724 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 00:37:07,724 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 00:37:07,724 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 00:37:07,724 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 00:37:07,724 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 00:37:07,725 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 00:37:07,725 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 00:37:07,726 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 00:37:07,726 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 00:37:07,726 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 00:37:07,726 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 00:37:07,726 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-09 00:37:07,726 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-09 00:37:07,726 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-09 00:37:07,726 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 00:37:07,726 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-09 00:37:07,726 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 00:37:07,726 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 00:37:07,726 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 00:37:07,726 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 00:37:07,726 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 00:37:07,726 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 00:37:07,726 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 00:37:07,726 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 00:37:07,726 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 00:37:07,727 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 00:37:07,727 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 00:37:07,727 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 00:37:07,727 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 00:37:07,727 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 00:37:07,727 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 00:37:07,727 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 00:37:07,727 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 00:37:07,727 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 -> e4ea247b245ebcaf5e735452e89c4110c7b9dc9b43836e98484a894783fc3462 [2025-03-09 00:37:07,961 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 00:37:07,970 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 00:37:07,971 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 00:37:07,972 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 00:37:07,972 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 00:37:07,973 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i [2025-03-09 00:37:09,146 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/161b26402/32b653317ee4489fb4927f969772cfe4/FLAG2e19e9359 [2025-03-09 00:37:09,472 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 00:37:09,472 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i [2025-03-09 00:37:09,492 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/161b26402/32b653317ee4489fb4927f969772cfe4/FLAG2e19e9359 [2025-03-09 00:37:09,716 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/161b26402/32b653317ee4489fb4927f969772cfe4 [2025-03-09 00:37:09,718 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 00:37:09,719 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 00:37:09,720 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 00:37:09,720 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 00:37:09,723 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 00:37:09,723 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 12:37:09" (1/1) ... [2025-03-09 00:37:09,724 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fe91a87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:37:09, skipping insertion in model container [2025-03-09 00:37:09,724 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 12:37:09" (1/1) ... [2025-03-09 00:37:09,763 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 00:37:10,064 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:37:10,093 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:37:10,095 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:37:10,097 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:37:10,100 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:37:10,121 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:37:10,121 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:37:10,123 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:37:10,123 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:37:10,125 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:37:10,126 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:37:10,127 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:37:10,127 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:37:10,129 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:37:10,130 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:37:10,132 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:37:10,132 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:37:10,134 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:37:10,135 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:37:10,137 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:37:10,148 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 00:37:10,162 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2025-03-09 00:37:10,163 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@65cdf60c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:37:10, skipping insertion in model container [2025-03-09 00:37:10,163 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 00:37:10,163 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-03-09 00:37:10,166 INFO L158 Benchmark]: Toolchain (without parser) took 446.34ms. Allocated memory is still 167.8MB. Free memory was 121.1MB in the beginning and 97.8MB in the end (delta: 23.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-09 00:37:10,167 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 201.3MB. Free memory is still 117.6MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 00:37:10,167 INFO L158 Benchmark]: CACSL2BoogieTranslator took 443.69ms. Allocated memory is still 167.8MB. Free memory was 121.1MB in the beginning and 97.8MB in the end (delta: 23.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-09 00:37:10,168 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 201.3MB. Free memory is still 117.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 443.69ms. Allocated memory is still 167.8MB. Free memory was 121.1MB in the beginning and 97.8MB in the end (delta: 23.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1001]: 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_FNV_test6-2.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 e4ea247b245ebcaf5e735452e89c4110c7b9dc9b43836e98484a894783fc3462 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 00:37:11,768 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 00:37:11,837 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-03-09 00:37:11,849 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 00:37:11,849 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 00:37:11,870 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 00:37:11,871 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 00:37:11,871 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 00:37:11,872 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 00:37:11,872 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 00:37:11,873 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 00:37:11,873 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 00:37:11,873 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 00:37:11,873 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 00:37:11,873 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 00:37:11,873 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 00:37:11,873 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 00:37:11,873 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 00:37:11,873 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 00:37:11,873 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 00:37:11,873 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-09 00:37:11,873 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-09 00:37:11,873 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-09 00:37:11,873 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 00:37:11,873 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-09 00:37:11,874 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-09 00:37:11,874 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-09 00:37:11,874 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 00:37:11,874 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 00:37:11,874 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 00:37:11,874 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 00:37:11,874 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 00:37:11,874 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 00:37:11,874 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 00:37:11,874 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 00:37:11,874 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 00:37:11,874 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 00:37:11,874 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 00:37:11,874 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-09 00:37:11,874 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-09 00:37:11,874 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 00:37:11,874 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 00:37:11,874 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 00:37:11,874 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 00:37:11,874 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 -> e4ea247b245ebcaf5e735452e89c4110c7b9dc9b43836e98484a894783fc3462 [2025-03-09 00:37:12,098 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 00:37:12,105 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 00:37:12,107 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 00:37:12,109 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 00:37:12,110 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 00:37:12,110 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i [2025-03-09 00:37:13,290 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6757e4716/a7f89f457ed140ca8451a5d291ebe299/FLAG7e09874a6 [2025-03-09 00:37:13,577 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 00:37:13,578 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i [2025-03-09 00:37:13,598 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6757e4716/a7f89f457ed140ca8451a5d291ebe299/FLAG7e09874a6 [2025-03-09 00:37:13,858 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6757e4716/a7f89f457ed140ca8451a5d291ebe299 [2025-03-09 00:37:13,860 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 00:37:13,861 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 00:37:13,862 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 00:37:13,862 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 00:37:13,864 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 00:37:13,865 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 12:37:13" (1/1) ... [2025-03-09 00:37:13,865 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38d455a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:37:13, skipping insertion in model container [2025-03-09 00:37:13,866 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 12:37:13" (1/1) ... [2025-03-09 00:37:13,901 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 00:37:14,197 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:37:14,222 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:37:14,225 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:37:14,229 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:37:14,236 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:37:14,268 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:37:14,268 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:37:14,270 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:37:14,270 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:37:14,273 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:37:14,274 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:37:14,276 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:37:14,280 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:37:14,282 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:37:14,290 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:37:14,295 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:37:14,296 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:37:14,297 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:37:14,298 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:37:14,304 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:37:14,307 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 00:37:14,329 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-03-09 00:37:14,339 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 00:37:14,369 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:37:14,385 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:37:14,386 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:37:14,387 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:37:14,390 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:37:14,410 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:37:14,411 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:37:14,412 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:37:14,412 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:37:14,416 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:37:14,417 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:37:14,418 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:37:14,418 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:37:14,421 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:37:14,424 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:37:14,425 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:37:14,429 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:37:14,430 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:37:14,432 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:37:14,434 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:37:14,438 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 00:37:14,443 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 00:37:14,528 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 00:37:14,592 INFO L204 MainTranslator]: Completed translation [2025-03-09 00:37:14,593 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:37:14 WrapperNode [2025-03-09 00:37:14,594 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 00:37:14,594 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 00:37:14,594 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 00:37:14,595 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 00:37:14,599 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:37:14" (1/1) ... [2025-03-09 00:37:14,622 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:37:14" (1/1) ... [2025-03-09 00:37:14,663 INFO L138 Inliner]: procedures = 286, calls = 353, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1191 [2025-03-09 00:37:14,666 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 00:37:14,666 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 00:37:14,666 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 00:37:14,666 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 00:37:14,672 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:37:14" (1/1) ... [2025-03-09 00:37:14,674 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:37:14" (1/1) ... [2025-03-09 00:37:14,680 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:37:14" (1/1) ... [2025-03-09 00:37:14,747 INFO L175 MemorySlicer]: Split 318 memory accesses to 4 slices as follows [2, 12, 270, 34]. 85 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 10, 0, 0]. The 62 writes are split as follows [0, 1, 57, 4]. [2025-03-09 00:37:14,748 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:37:14" (1/1) ... [2025-03-09 00:37:14,748 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:37:14" (1/1) ... [2025-03-09 00:37:14,778 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:37:14" (1/1) ... [2025-03-09 00:37:14,782 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:37:14" (1/1) ... [2025-03-09 00:37:14,787 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:37:14" (1/1) ... [2025-03-09 00:37:14,791 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:37:14" (1/1) ... [2025-03-09 00:37:14,797 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 00:37:14,798 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 00:37:14,798 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 00:37:14,798 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 00:37:14,799 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:37:14" (1/1) ... [2025-03-09 00:37:14,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 00:37:14,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:37:14,832 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-09 00:37:14,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-09 00:37:14,858 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2025-03-09 00:37:14,858 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2025-03-09 00:37:14,858 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2025-03-09 00:37:14,858 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2025-03-09 00:37:14,858 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2025-03-09 00:37:14,858 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2025-03-09 00:37:14,858 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-03-09 00:37:14,858 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-03-09 00:37:14,859 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2025-03-09 00:37:14,859 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2025-03-09 00:37:14,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-09 00:37:14,859 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-09 00:37:14,859 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-09 00:37:14,859 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-09 00:37:14,859 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-03-09 00:37:14,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-09 00:37:14,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-03-09 00:37:14,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-03-09 00:37:14,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2025-03-09 00:37:14,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2025-03-09 00:37:14,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-09 00:37:14,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-03-09 00:37:14,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2025-03-09 00:37:14,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2025-03-09 00:37:14,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2025-03-09 00:37:14,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2025-03-09 00:37:14,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#2 [2025-03-09 00:37:14,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#3 [2025-03-09 00:37:14,859 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2025-03-09 00:37:14,859 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2025-03-09 00:37:14,859 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-09 00:37:14,859 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-09 00:37:14,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-09 00:37:14,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 00:37:14,859 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2025-03-09 00:37:14,859 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2025-03-09 00:37:14,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-09 00:37:14,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-09 00:37:14,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-09 00:37:14,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-03-09 00:37:14,859 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2025-03-09 00:37:14,862 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2025-03-09 00:37:14,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 00:37:14,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 00:37:15,054 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 00:37:15,055 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 00:37:15,140 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L955: havoc #t~malloc32.base, #t~malloc32.offset; [2025-03-09 00:37:18,000 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L969: havoc alt_memcmp_#t~nondet36#1; [2025-03-09 00:37:18,000 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L979: havoc real_malloc_#t~malloc39#1.base, real_malloc_#t~malloc39#1.offset; [2025-03-09 00:37:18,000 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L987: call ULTIMATE.dealloc(main_~#i~0#1.base, main_~#i~0#1.offset);havoc main_~#i~0#1.base, main_~#i~0#1.offset; [2025-03-09 00:37:18,091 INFO L? ?]: Removed 1306 outVars from TransFormulas that were not future-live. [2025-03-09 00:37:18,091 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 00:37:18,120 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 00:37:18,123 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 00:37:18,123 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 12:37:18 BoogieIcfgContainer [2025-03-09 00:37:18,123 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 00:37:18,125 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 00:37:18,125 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 00:37:18,129 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 00:37:18,129 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 12:37:13" (1/3) ... [2025-03-09 00:37:18,129 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@370e1192 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 12:37:18, skipping insertion in model container [2025-03-09 00:37:18,130 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:37:14" (2/3) ... [2025-03-09 00:37:18,130 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@370e1192 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 12:37:18, skipping insertion in model container [2025-03-09 00:37:18,130 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 12:37:18" (3/3) ... [2025-03-09 00:37:18,131 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test6-2.i [2025-03-09 00:37:18,140 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 00:37:18,141 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_FNV_test6-2.i that has 6 procedures, 1277 locations, 1 initial locations, 39 loop locations, and 625 error locations. [2025-03-09 00:37:18,182 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 00:37:18,189 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;@4ce3eec9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 00:37:18,189 INFO L334 AbstractCegarLoop]: Starting to check reachability of 625 error locations. [2025-03-09 00:37:18,194 INFO L276 IsEmpty]: Start isEmpty. Operand has 1277 states, 627 states have (on average 2.218500797448166) internal successors, (1391), 1255 states have internal predecessors, (1391), 20 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-09 00:37:18,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-03-09 00:37:18,197 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:37:18,197 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-03-09 00:37:18,198 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr613REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 622 more)] === [2025-03-09 00:37:18,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:37:18,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1432866, now seen corresponding path program 1 times [2025-03-09 00:37:18,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:37:18,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [693244010] [2025-03-09 00:37:18,212 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:37:18,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:37:18,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:37:18,215 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:37:18,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-09 00:37:18,348 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-09 00:37:18,369 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-09 00:37:18,369 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:37:18,369 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:37:18,373 INFO L256 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 00:37:18,376 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:37:18,412 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-09 00:37:18,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:37:18,426 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:37:18,426 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:37:18,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693244010] [2025-03-09 00:37:18,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693244010] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:37:18,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:37:18,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 00:37:18,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524231536] [2025-03-09 00:37:18,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:37:18,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 00:37:18,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:37:18,451 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 00:37:18,451 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:37:18,456 INFO L87 Difference]: Start difference. First operand has 1277 states, 627 states have (on average 2.218500797448166) internal successors, (1391), 1255 states have internal predecessors, (1391), 20 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:37:19,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:37:19,896 INFO L93 Difference]: Finished difference Result 1536 states and 1629 transitions. [2025-03-09 00:37:19,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 00:37:19,897 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2025-03-09 00:37:19,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:37:19,908 INFO L225 Difference]: With dead ends: 1536 [2025-03-09 00:37:19,908 INFO L226 Difference]: Without dead ends: 1534 [2025-03-09 00:37:19,909 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:37:19,911 INFO L435 NwaCegarLoop]: 904 mSDtfsCounter, 909 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 792 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 912 SdHoareTripleChecker+Valid, 1250 SdHoareTripleChecker+Invalid, 804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-09 00:37:19,911 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [912 Valid, 1250 Invalid, 804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 792 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-09 00:37:19,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1534 states. [2025-03-09 00:37:19,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1534 to 1298. [2025-03-09 00:37:19,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1298 states, 663 states have (on average 2.090497737556561) internal successors, (1386), 1278 states have internal predecessors, (1386), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-09 00:37:19,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1298 states to 1298 states and 1420 transitions. [2025-03-09 00:37:19,973 INFO L78 Accepts]: Start accepts. Automaton has 1298 states and 1420 transitions. Word has length 3 [2025-03-09 00:37:19,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:37:19,974 INFO L471 AbstractCegarLoop]: Abstraction has 1298 states and 1420 transitions. [2025-03-09 00:37:19,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:37:19,974 INFO L276 IsEmpty]: Start isEmpty. Operand 1298 states and 1420 transitions. [2025-03-09 00:37:19,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-03-09 00:37:19,974 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:37:19,974 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-03-09 00:37:19,982 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-09 00:37:20,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:37:20,175 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr614REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 622 more)] === [2025-03-09 00:37:20,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:37:20,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1432867, now seen corresponding path program 1 times [2025-03-09 00:37:20,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:37:20,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2106143319] [2025-03-09 00:37:20,176 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:37:20,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:37:20,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:37:20,178 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:37:20,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-09 00:37:20,287 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-09 00:37:20,299 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-09 00:37:20,299 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:37:20,299 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:37:20,301 INFO L256 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 00:37:20,303 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:37:20,310 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 5 [2025-03-09 00:37:20,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:37:20,320 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:37:20,320 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:37:20,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106143319] [2025-03-09 00:37:20,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106143319] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:37:20,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:37:20,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 00:37:20,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145441851] [2025-03-09 00:37:20,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:37:20,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 00:37:20,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:37:20,322 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 00:37:20,322 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:37:20,322 INFO L87 Difference]: Start difference. First operand 1298 states and 1420 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:37:22,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:37:22,255 INFO L93 Difference]: Finished difference Result 1897 states and 2069 transitions. [2025-03-09 00:37:22,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 00:37:22,255 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2025-03-09 00:37:22,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:37:22,260 INFO L225 Difference]: With dead ends: 1897 [2025-03-09 00:37:22,260 INFO L226 Difference]: Without dead ends: 1897 [2025-03-09 00:37:22,261 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:37:22,261 INFO L435 NwaCegarLoop]: 1041 mSDtfsCounter, 632 mSDsluCounter, 705 mSDsCounter, 0 mSdLazyCounter, 916 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 639 SdHoareTripleChecker+Valid, 1746 SdHoareTripleChecker+Invalid, 921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-03-09 00:37:22,261 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [639 Valid, 1746 Invalid, 921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 916 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-03-09 00:37:22,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1897 states. [2025-03-09 00:37:22,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1897 to 1509. [2025-03-09 00:37:22,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1509 states, 873 states have (on average 2.0721649484536084) internal successors, (1809), 1487 states have internal predecessors, (1809), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2025-03-09 00:37:22,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1509 states to 1509 states and 1847 transitions. [2025-03-09 00:37:22,287 INFO L78 Accepts]: Start accepts. Automaton has 1509 states and 1847 transitions. Word has length 3 [2025-03-09 00:37:22,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:37:22,287 INFO L471 AbstractCegarLoop]: Abstraction has 1509 states and 1847 transitions. [2025-03-09 00:37:22,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:37:22,287 INFO L276 IsEmpty]: Start isEmpty. Operand 1509 states and 1847 transitions. [2025-03-09 00:37:22,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-03-09 00:37:22,288 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:37:22,288 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:37:22,299 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-09 00:37:22,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:37:22,488 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr610REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 622 more)] === [2025-03-09 00:37:22,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:37:22,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1816565268, now seen corresponding path program 1 times [2025-03-09 00:37:22,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:37:22,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [433050199] [2025-03-09 00:37:22,489 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:37:22,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:37:22,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:37:22,491 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:37:22,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-09 00:37:22,610 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 00:37:22,630 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 00:37:22,631 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:37:22,631 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:37:22,633 INFO L256 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-09 00:37:22,635 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:37:22,639 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-09 00:37:22,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-09 00:37:22,700 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-03-09 00:37:22,712 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-09 00:37:22,712 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-03-09 00:37:22,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:37:22,737 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:37:22,737 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:37:22,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [433050199] [2025-03-09 00:37:22,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [433050199] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:37:22,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:37:22,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 00:37:22,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64286731] [2025-03-09 00:37:22,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:37:22,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:37:22,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:37:22,738 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:37:22,738 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:37:22,738 INFO L87 Difference]: Start difference. First operand 1509 states and 1847 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:37:26,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:37:26,082 INFO L93 Difference]: Finished difference Result 2587 states and 3006 transitions. [2025-03-09 00:37:26,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:37:26,082 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-03-09 00:37:26,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:37:26,089 INFO L225 Difference]: With dead ends: 2587 [2025-03-09 00:37:26,089 INFO L226 Difference]: Without dead ends: 2587 [2025-03-09 00:37:26,089 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:37:26,089 INFO L435 NwaCegarLoop]: 699 mSDtfsCounter, 1122 mSDsluCounter, 1094 mSDsCounter, 0 mSdLazyCounter, 2201 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1128 SdHoareTripleChecker+Valid, 1793 SdHoareTripleChecker+Invalid, 2214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 2201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2025-03-09 00:37:26,090 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1128 Valid, 1793 Invalid, 2214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 2201 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2025-03-09 00:37:26,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2587 states. [2025-03-09 00:37:26,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2587 to 1656. [2025-03-09 00:37:26,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1656 states, 1020 states have (on average 2.052941176470588) internal successors, (2094), 1634 states have internal predecessors, (2094), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2025-03-09 00:37:26,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1656 states to 1656 states and 2132 transitions. [2025-03-09 00:37:26,135 INFO L78 Accepts]: Start accepts. Automaton has 1656 states and 2132 transitions. Word has length 8 [2025-03-09 00:37:26,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:37:26,136 INFO L471 AbstractCegarLoop]: Abstraction has 1656 states and 2132 transitions. [2025-03-09 00:37:26,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:37:26,137 INFO L276 IsEmpty]: Start isEmpty. Operand 1656 states and 2132 transitions. [2025-03-09 00:37:26,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-03-09 00:37:26,137 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:37:26,137 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:37:26,148 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-09 00:37:26,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:37:26,338 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr608REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 622 more)] === [2025-03-09 00:37:26,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:37:26,338 INFO L85 PathProgramCache]: Analyzing trace with hash 478949790, now seen corresponding path program 1 times [2025-03-09 00:37:26,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:37:26,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [976771500] [2025-03-09 00:37:26,339 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:37:26,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:37:26,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:37:26,341 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:37:26,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-09 00:37:26,435 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-09 00:37:26,452 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-09 00:37:26,452 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:37:26,452 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:37:26,454 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-09 00:37:26,457 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:37:26,469 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-09 00:37:26,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:37:26,507 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:37:26,507 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:37:26,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976771500] [2025-03-09 00:37:26,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976771500] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:37:26,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:37:26,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 00:37:26,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277724469] [2025-03-09 00:37:26,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:37:26,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:37:26,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:37:26,508 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:37:26,508 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:37:26,508 INFO L87 Difference]: Start difference. First operand 1656 states and 2132 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:37:28,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:37:28,797 INFO L93 Difference]: Finished difference Result 2308 states and 2985 transitions. [2025-03-09 00:37:28,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 00:37:28,798 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-03-09 00:37:28,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:37:28,803 INFO L225 Difference]: With dead ends: 2308 [2025-03-09 00:37:28,803 INFO L226 Difference]: Without dead ends: 2308 [2025-03-09 00:37:28,803 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:37:28,804 INFO L435 NwaCegarLoop]: 1425 mSDtfsCounter, 700 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 1746 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 2913 SdHoareTripleChecker+Invalid, 1760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2025-03-09 00:37:28,804 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [702 Valid, 2913 Invalid, 1760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1746 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2025-03-09 00:37:28,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2308 states. [2025-03-09 00:37:28,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2308 to 1648. [2025-03-09 00:37:28,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1648 states, 1022 states have (on average 2.028375733855186) internal successors, (2073), 1626 states have internal predecessors, (2073), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2025-03-09 00:37:28,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1648 states to 1648 states and 2111 transitions. [2025-03-09 00:37:28,828 INFO L78 Accepts]: Start accepts. Automaton has 1648 states and 2111 transitions. Word has length 9 [2025-03-09 00:37:28,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:37:28,828 INFO L471 AbstractCegarLoop]: Abstraction has 1648 states and 2111 transitions. [2025-03-09 00:37:28,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:37:28,828 INFO L276 IsEmpty]: Start isEmpty. Operand 1648 states and 2111 transitions. [2025-03-09 00:37:28,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-03-09 00:37:28,828 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:37:28,828 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:37:28,835 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-09 00:37:29,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:37:29,029 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr607REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 622 more)] === [2025-03-09 00:37:29,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:37:29,029 INFO L85 PathProgramCache]: Analyzing trace with hash 478949789, now seen corresponding path program 1 times [2025-03-09 00:37:29,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:37:29,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1160542487] [2025-03-09 00:37:29,030 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:37:29,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:37:29,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:37:29,032 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:37:29,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-09 00:37:29,131 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-09 00:37:29,148 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-09 00:37:29,148 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:37:29,148 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:37:29,151 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 00:37:29,152 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:37:29,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-09 00:37:29,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:37:29,169 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:37:29,169 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:37:29,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160542487] [2025-03-09 00:37:29,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160542487] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:37:29,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:37:29,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 00:37:29,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874172922] [2025-03-09 00:37:29,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:37:29,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:37:29,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:37:29,170 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:37:29,170 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:37:29,170 INFO L87 Difference]: Start difference. First operand 1648 states and 2111 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:37:30,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:37:30,738 INFO L93 Difference]: Finished difference Result 2191 states and 2881 transitions. [2025-03-09 00:37:30,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 00:37:30,738 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-03-09 00:37:30,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:37:30,743 INFO L225 Difference]: With dead ends: 2191 [2025-03-09 00:37:30,743 INFO L226 Difference]: Without dead ends: 2191 [2025-03-09 00:37:30,743 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:37:30,743 INFO L435 NwaCegarLoop]: 1218 mSDtfsCounter, 919 mSDsluCounter, 1280 mSDsCounter, 0 mSdLazyCounter, 1655 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 2498 SdHoareTripleChecker+Invalid, 1704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-03-09 00:37:30,743 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [922 Valid, 2498 Invalid, 1704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1655 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-03-09 00:37:30,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2191 states. [2025-03-09 00:37:30,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2191 to 1603. [2025-03-09 00:37:30,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1603 states, 1022 states have (on average 1.9696673189823874) internal successors, (2013), 1581 states have internal predecessors, (2013), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2025-03-09 00:37:30,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1603 states to 1603 states and 2051 transitions. [2025-03-09 00:37:30,768 INFO L78 Accepts]: Start accepts. Automaton has 1603 states and 2051 transitions. Word has length 9 [2025-03-09 00:37:30,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:37:30,769 INFO L471 AbstractCegarLoop]: Abstraction has 1603 states and 2051 transitions. [2025-03-09 00:37:30,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:37:30,769 INFO L276 IsEmpty]: Start isEmpty. Operand 1603 states and 2051 transitions. [2025-03-09 00:37:30,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-03-09 00:37:30,769 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:37:30,769 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:37:30,776 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-09 00:37:30,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:37:30,970 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr291REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 622 more)] === [2025-03-09 00:37:30,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:37:30,971 INFO L85 PathProgramCache]: Analyzing trace with hash 2083823030, now seen corresponding path program 1 times [2025-03-09 00:37:30,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:37:30,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [242285488] [2025-03-09 00:37:30,971 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:37:30,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:37:30,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:37:30,973 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:37:30,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-09 00:37:31,077 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-09 00:37:31,105 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-09 00:37:31,105 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:37:31,105 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:37:31,107 INFO L256 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 00:37:31,108 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:37:31,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:37:31,133 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:37:31,134 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:37:31,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242285488] [2025-03-09 00:37:31,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242285488] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:37:31,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:37:31,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 00:37:31,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881042148] [2025-03-09 00:37:31,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:37:31,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:37:31,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:37:31,135 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:37:31,135 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:37:31,135 INFO L87 Difference]: Start difference. First operand 1603 states and 2051 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:37:32,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:37:32,550 INFO L93 Difference]: Finished difference Result 1820 states and 2225 transitions. [2025-03-09 00:37:32,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:37:32,550 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2025-03-09 00:37:32,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:37:32,554 INFO L225 Difference]: With dead ends: 1820 [2025-03-09 00:37:32,554 INFO L226 Difference]: Without dead ends: 1820 [2025-03-09 00:37:32,555 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 [2025-03-09 00:37:32,555 INFO L435 NwaCegarLoop]: 837 mSDtfsCounter, 928 mSDsluCounter, 956 mSDsCounter, 0 mSdLazyCounter, 1312 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 931 SdHoareTripleChecker+Valid, 1793 SdHoareTripleChecker+Invalid, 1339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-09 00:37:32,555 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [931 Valid, 1793 Invalid, 1339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1312 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-09 00:37:32,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1820 states. [2025-03-09 00:37:32,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1820 to 1580. [2025-03-09 00:37:32,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1580 states, 1022 states have (on average 1.9246575342465753) internal successors, (1967), 1558 states have internal predecessors, (1967), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2025-03-09 00:37:32,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 2005 transitions. [2025-03-09 00:37:32,584 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 2005 transitions. Word has length 12 [2025-03-09 00:37:32,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:37:32,584 INFO L471 AbstractCegarLoop]: Abstraction has 1580 states and 2005 transitions. [2025-03-09 00:37:32,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:37:32,584 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 2005 transitions. [2025-03-09 00:37:32,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-03-09 00:37:32,585 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:37:32,585 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:37:32,592 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-09 00:37:32,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:37:32,785 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr292REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 622 more)] === [2025-03-09 00:37:32,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:37:32,786 INFO L85 PathProgramCache]: Analyzing trace with hash 2083823031, now seen corresponding path program 1 times [2025-03-09 00:37:32,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:37:32,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1353462771] [2025-03-09 00:37:32,786 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:37:32,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:37:32,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:37:32,788 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:37:32,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-09 00:37:32,883 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-09 00:37:32,900 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-09 00:37:32,901 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:37:32,901 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:37:32,903 INFO L256 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-09 00:37:32,904 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:37:32,909 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-09 00:37:32,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:37:32,956 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:37:32,956 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:37:32,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353462771] [2025-03-09 00:37:32,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353462771] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:37:32,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:37:32,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 00:37:32,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064241996] [2025-03-09 00:37:32,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:37:32,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:37:32,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:37:32,957 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:37:32,957 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:37:32,957 INFO L87 Difference]: Start difference. First operand 1580 states and 2005 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:37:34,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:37:34,963 INFO L93 Difference]: Finished difference Result 2127 states and 2594 transitions. [2025-03-09 00:37:34,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:37:34,963 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2025-03-09 00:37:34,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:37:34,967 INFO L225 Difference]: With dead ends: 2127 [2025-03-09 00:37:34,967 INFO L226 Difference]: Without dead ends: 2127 [2025-03-09 00:37:34,968 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 [2025-03-09 00:37:34,968 INFO L435 NwaCegarLoop]: 993 mSDtfsCounter, 611 mSDsluCounter, 1266 mSDsCounter, 0 mSdLazyCounter, 1501 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 618 SdHoareTripleChecker+Valid, 2259 SdHoareTripleChecker+Invalid, 1516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-03-09 00:37:34,968 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [618 Valid, 2259 Invalid, 1516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1501 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-03-09 00:37:34,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2127 states. [2025-03-09 00:37:34,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2127 to 1773. [2025-03-09 00:37:34,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1773 states, 1213 states have (on average 1.9175597691673536) internal successors, (2326), 1749 states have internal predecessors, (2326), 23 states have call successors, (23), 5 states have call predecessors, (23), 4 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2025-03-09 00:37:34,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1773 states to 1773 states and 2368 transitions. [2025-03-09 00:37:34,990 INFO L78 Accepts]: Start accepts. Automaton has 1773 states and 2368 transitions. Word has length 12 [2025-03-09 00:37:34,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:37:34,991 INFO L471 AbstractCegarLoop]: Abstraction has 1773 states and 2368 transitions. [2025-03-09 00:37:34,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:37:34,991 INFO L276 IsEmpty]: Start isEmpty. Operand 1773 states and 2368 transitions. [2025-03-09 00:37:34,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-03-09 00:37:34,991 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:37:34,992 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:37:34,999 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-09 00:37:35,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:37:35,192 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 622 more)] === [2025-03-09 00:37:35,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:37:35,193 INFO L85 PathProgramCache]: Analyzing trace with hash -228522914, now seen corresponding path program 1 times [2025-03-09 00:37:35,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:37:35,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1260371146] [2025-03-09 00:37:35,193 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:37:35,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:37:35,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:37:35,195 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:37:35,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-09 00:37:35,283 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-09 00:37:35,304 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-09 00:37:35,305 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:37:35,305 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:37:35,306 INFO L256 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 00:37:35,308 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:37:35,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:37:35,357 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:37:35,358 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:37:35,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260371146] [2025-03-09 00:37:35,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260371146] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:37:35,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:37:35,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:37:35,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267323737] [2025-03-09 00:37:35,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:37:35,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:37:35,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:37:35,358 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:37:35,358 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:37:35,358 INFO L87 Difference]: Start difference. First operand 1773 states and 2368 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2025-03-09 00:37:35,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:37:35,901 INFO L93 Difference]: Finished difference Result 2139 states and 2640 transitions. [2025-03-09 00:37:35,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:37:35,902 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), 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 13 [2025-03-09 00:37:35,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:37:35,906 INFO L225 Difference]: With dead ends: 2139 [2025-03-09 00:37:35,906 INFO L226 Difference]: Without dead ends: 2139 [2025-03-09 00:37:35,906 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 [2025-03-09 00:37:35,907 INFO L435 NwaCegarLoop]: 1460 mSDtfsCounter, 611 mSDsluCounter, 2474 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 3934 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-09 00:37:35,907 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [616 Valid, 3934 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-09 00:37:35,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2139 states. [2025-03-09 00:37:35,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2139 to 1788. [2025-03-09 00:37:35,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1788 states, 1227 states have (on average 1.9046454767726162) internal successors, (2337), 1763 states have internal predecessors, (2337), 24 states have call successors, (24), 5 states have call predecessors, (24), 4 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-09 00:37:35,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1788 states to 1788 states and 2381 transitions. [2025-03-09 00:37:35,926 INFO L78 Accepts]: Start accepts. Automaton has 1788 states and 2381 transitions. Word has length 13 [2025-03-09 00:37:35,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:37:35,926 INFO L471 AbstractCegarLoop]: Abstraction has 1788 states and 2381 transitions. [2025-03-09 00:37:35,926 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), 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) [2025-03-09 00:37:35,926 INFO L276 IsEmpty]: Start isEmpty. Operand 1788 states and 2381 transitions. [2025-03-09 00:37:35,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-03-09 00:37:35,926 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:37:35,927 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:37:35,933 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-09 00:37:36,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:37:36,127 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr268REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 622 more)] === [2025-03-09 00:37:36,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:37:36,129 INFO L85 PathProgramCache]: Analyzing trace with hash 173960522, now seen corresponding path program 1 times [2025-03-09 00:37:36,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:37:36,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [369887665] [2025-03-09 00:37:36,129 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:37:36,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:37:36,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:37:36,131 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:37:36,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-09 00:37:36,227 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-09 00:37:36,244 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-09 00:37:36,244 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:37:36,244 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:37:36,246 INFO L256 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 00:37:36,247 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:37:36,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:37:36,261 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:37:36,261 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:37:36,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369887665] [2025-03-09 00:37:36,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [369887665] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:37:36,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:37:36,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:37:36,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175728031] [2025-03-09 00:37:36,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:37:36,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:37:36,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:37:36,261 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:37:36,261 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:37:36,261 INFO L87 Difference]: Start difference. First operand 1788 states and 2381 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) [2025-03-09 00:37:36,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:37:36,312 INFO L93 Difference]: Finished difference Result 1716 states and 2258 transitions. [2025-03-09 00:37:36,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 00:37:36,313 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 [2025-03-09 00:37:36,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:37:36,316 INFO L225 Difference]: With dead ends: 1716 [2025-03-09 00:37:36,316 INFO L226 Difference]: Without dead ends: 1716 [2025-03-09 00:37:36,316 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 [2025-03-09 00:37:36,317 INFO L435 NwaCegarLoop]: 1174 mSDtfsCounter, 45 mSDsluCounter, 2325 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 3499 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 [2025-03-09 00:37:36,317 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 3499 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-09 00:37:36,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1716 states. [2025-03-09 00:37:36,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1716 to 1716. [2025-03-09 00:37:36,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1716 states, 1174 states have (on average 1.8858603066439523) internal successors, (2214), 1691 states have internal predecessors, (2214), 24 states have call successors, (24), 5 states have call predecessors, (24), 4 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-09 00:37:36,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1716 states to 1716 states and 2258 transitions. [2025-03-09 00:37:36,335 INFO L78 Accepts]: Start accepts. Automaton has 1716 states and 2258 transitions. Word has length 13 [2025-03-09 00:37:36,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:37:36,335 INFO L471 AbstractCegarLoop]: Abstraction has 1716 states and 2258 transitions. [2025-03-09 00:37:36,335 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) [2025-03-09 00:37:36,336 INFO L276 IsEmpty]: Start isEmpty. Operand 1716 states and 2258 transitions. [2025-03-09 00:37:36,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-03-09 00:37:36,337 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:37:36,337 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:37:36,344 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-03-09 00:37:36,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:37:36,538 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 622 more)] === [2025-03-09 00:37:36,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:37:36,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1777616277, now seen corresponding path program 1 times [2025-03-09 00:37:36,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:37:36,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [153614187] [2025-03-09 00:37:36,538 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:37:36,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:37:36,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:37:36,541 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:37:36,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-09 00:37:36,641 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-09 00:37:36,659 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-09 00:37:36,660 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:37:36,660 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:37:36,662 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 00:37:36,663 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:37:36,667 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-09 00:37:36,668 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-09 00:37:36,668 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-09 00:37:36,670 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 [2025-03-09 00:37:36,703 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-09 00:37:36,703 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 [2025-03-09 00:37:36,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:37:36,726 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:37:36,726 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:37:36,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153614187] [2025-03-09 00:37:36,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [153614187] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:37:36,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:37:36,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:37:36,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876854287] [2025-03-09 00:37:36,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:37:36,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:37:36,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:37:36,726 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:37:36,726 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:37:36,726 INFO L87 Difference]: Start difference. First operand 1716 states and 2258 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:37:36,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:37:36,932 INFO L93 Difference]: Finished difference Result 2429 states and 2824 transitions. [2025-03-09 00:37:36,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:37:36,933 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-03-09 00:37:36,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:37:36,938 INFO L225 Difference]: With dead ends: 2429 [2025-03-09 00:37:36,938 INFO L226 Difference]: Without dead ends: 2429 [2025-03-09 00:37:36,938 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 [2025-03-09 00:37:36,938 INFO L435 NwaCegarLoop]: 1379 mSDtfsCounter, 1061 mSDsluCounter, 2528 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1075 SdHoareTripleChecker+Valid, 3907 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-09 00:37:36,938 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1075 Valid, 3907 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-09 00:37:36,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2429 states. [2025-03-09 00:37:36,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2429 to 1401. [2025-03-09 00:37:36,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1401 states, 861 states have (on average 1.9036004645760742) internal successors, (1639), 1378 states have internal predecessors, (1639), 22 states have call successors, (22), 5 states have call predecessors, (22), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2025-03-09 00:37:36,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1401 states to 1401 states and 1679 transitions. [2025-03-09 00:37:36,953 INFO L78 Accepts]: Start accepts. Automaton has 1401 states and 1679 transitions. Word has length 16 [2025-03-09 00:37:36,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:37:36,953 INFO L471 AbstractCegarLoop]: Abstraction has 1401 states and 1679 transitions. [2025-03-09 00:37:36,953 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:37:36,953 INFO L276 IsEmpty]: Start isEmpty. Operand 1401 states and 1679 transitions. [2025-03-09 00:37:36,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-03-09 00:37:36,953 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:37:36,953 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:37:36,960 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-03-09 00:37:37,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:37:37,154 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr599REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 622 more)] === [2025-03-09 00:37:37,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:37:37,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1440762696, now seen corresponding path program 1 times [2025-03-09 00:37:37,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:37:37,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1344804317] [2025-03-09 00:37:37,155 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:37:37,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:37:37,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:37:37,157 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:37:37,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-09 00:37:37,278 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-09 00:37:37,305 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-09 00:37:37,306 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:37:37,306 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:37:37,310 INFO L256 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 00:37:37,311 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:37:37,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:37:37,351 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:37:37,351 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:37:37,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344804317] [2025-03-09 00:37:37,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344804317] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:37:37,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:37:37,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 00:37:37,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689386705] [2025-03-09 00:37:37,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:37:37,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:37:37,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:37:37,352 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:37:37,353 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:37:37,353 INFO L87 Difference]: Start difference. First operand 1401 states and 1679 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:37:38,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:37:38,787 INFO L93 Difference]: Finished difference Result 1780 states and 2153 transitions. [2025-03-09 00:37:38,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:37:38,788 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 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 18 [2025-03-09 00:37:38,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:37:38,791 INFO L225 Difference]: With dead ends: 1780 [2025-03-09 00:37:38,791 INFO L226 Difference]: Without dead ends: 1780 [2025-03-09 00:37:38,792 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:37:38,792 INFO L435 NwaCegarLoop]: 744 mSDtfsCounter, 883 mSDsluCounter, 893 mSDsCounter, 0 mSdLazyCounter, 1321 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 886 SdHoareTripleChecker+Valid, 1637 SdHoareTripleChecker+Invalid, 1349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-09 00:37:38,792 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [886 Valid, 1637 Invalid, 1349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1321 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-09 00:37:38,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1780 states. [2025-03-09 00:37:38,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1780 to 1378. [2025-03-09 00:37:38,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1378 states, 861 states have (on average 1.8501742160278745) internal successors, (1593), 1355 states have internal predecessors, (1593), 22 states have call successors, (22), 5 states have call predecessors, (22), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2025-03-09 00:37:38,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1378 states to 1378 states and 1633 transitions. [2025-03-09 00:37:38,803 INFO L78 Accepts]: Start accepts. Automaton has 1378 states and 1633 transitions. Word has length 18 [2025-03-09 00:37:38,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:37:38,803 INFO L471 AbstractCegarLoop]: Abstraction has 1378 states and 1633 transitions. [2025-03-09 00:37:38,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:37:38,804 INFO L276 IsEmpty]: Start isEmpty. Operand 1378 states and 1633 transitions. [2025-03-09 00:37:38,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-03-09 00:37:38,805 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:37:38,805 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:37:38,813 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-03-09 00:37:39,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:37:39,006 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr600REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 622 more)] === [2025-03-09 00:37:39,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:37:39,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1440762697, now seen corresponding path program 1 times [2025-03-09 00:37:39,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:37:39,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1406371607] [2025-03-09 00:37:39,006 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:37:39,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:37:39,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:37:39,008 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:37:39,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-09 00:37:39,116 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-09 00:37:39,147 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-09 00:37:39,147 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:37:39,147 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:37:39,152 INFO L256 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-09 00:37:39,154 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:37:39,160 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-09 00:37:39,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:37:39,225 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:37:39,225 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:37:39,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406371607] [2025-03-09 00:37:39,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406371607] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:37:39,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:37:39,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:37:39,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487362741] [2025-03-09 00:37:39,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:37:39,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 00:37:39,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:37:39,225 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 00:37:39,225 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:37:39,226 INFO L87 Difference]: Start difference. First operand 1378 states and 1633 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:37:41,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:37:41,839 INFO L93 Difference]: Finished difference Result 2019 states and 2397 transitions. [2025-03-09 00:37:41,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 00:37:41,840 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 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 18 [2025-03-09 00:37:41,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:37:41,844 INFO L225 Difference]: With dead ends: 2019 [2025-03-09 00:37:41,844 INFO L226 Difference]: Without dead ends: 2019 [2025-03-09 00:37:41,844 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-03-09 00:37:41,844 INFO L435 NwaCegarLoop]: 1334 mSDtfsCounter, 738 mSDsluCounter, 2194 mSDsCounter, 0 mSdLazyCounter, 2339 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 740 SdHoareTripleChecker+Valid, 3528 SdHoareTripleChecker+Invalid, 2362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 2339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2025-03-09 00:37:41,844 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [740 Valid, 3528 Invalid, 2362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 2339 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2025-03-09 00:37:41,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2019 states. [2025-03-09 00:37:41,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2019 to 1492. [2025-03-09 00:37:41,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1492 states, 975 states have (on average 1.7753846153846153) internal successors, (1731), 1469 states have internal predecessors, (1731), 22 states have call successors, (22), 5 states have call predecessors, (22), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2025-03-09 00:37:41,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1492 states to 1492 states and 1771 transitions. [2025-03-09 00:37:41,856 INFO L78 Accepts]: Start accepts. Automaton has 1492 states and 1771 transitions. Word has length 18 [2025-03-09 00:37:41,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:37:41,856 INFO L471 AbstractCegarLoop]: Abstraction has 1492 states and 1771 transitions. [2025-03-09 00:37:41,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:37:41,856 INFO L276 IsEmpty]: Start isEmpty. Operand 1492 states and 1771 transitions. [2025-03-09 00:37:41,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-03-09 00:37:41,856 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:37:41,856 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, 1, 1] [2025-03-09 00:37:41,865 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-03-09 00:37:42,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:37:42,057 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr600REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 622 more)] === [2025-03-09 00:37:42,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:37:42,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1156937947, now seen corresponding path program 1 times [2025-03-09 00:37:42,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:37:42,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1783235235] [2025-03-09 00:37:42,058 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:37:42,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:37:42,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:37:42,059 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:37:42,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-09 00:37:42,166 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-03-09 00:37:42,223 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-03-09 00:37:42,223 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:37:42,223 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:37:42,231 INFO L256 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-09 00:37:42,233 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:37:42,238 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-09 00:37:42,406 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:37:42,406 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 00:37:42,742 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:37:42,742 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:37:42,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783235235] [2025-03-09 00:37:42,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783235235] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 00:37:42,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-09 00:37:42,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2025-03-09 00:37:42,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747269277] [2025-03-09 00:37:42,742 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-09 00:37:42,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-09 00:37:42,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:37:42,743 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-09 00:37:42,743 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2025-03-09 00:37:42,743 INFO L87 Difference]: Start difference. First operand 1492 states and 1771 transitions. Second operand has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:37:50,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:37:50,039 INFO L93 Difference]: Finished difference Result 2375 states and 2887 transitions. [2025-03-09 00:37:50,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-09 00:37:50,040 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 10 states have internal predecessors, (70), 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 37 [2025-03-09 00:37:50,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:37:50,045 INFO L225 Difference]: With dead ends: 2375 [2025-03-09 00:37:50,047 INFO L226 Difference]: Without dead ends: 2375 [2025-03-09 00:37:50,048 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2025-03-09 00:37:50,048 INFO L435 NwaCegarLoop]: 1386 mSDtfsCounter, 2368 mSDsluCounter, 4084 mSDsCounter, 0 mSdLazyCounter, 3997 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2370 SdHoareTripleChecker+Valid, 5470 SdHoareTripleChecker+Invalid, 4027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 3997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2025-03-09 00:37:50,048 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2370 Valid, 5470 Invalid, 4027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 3997 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2025-03-09 00:37:50,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2375 states. [2025-03-09 00:37:50,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2375 to 1656. [2025-03-09 00:37:50,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1656 states, 1139 states have (on average 1.723441615452151) internal successors, (1963), 1633 states have internal predecessors, (1963), 22 states have call successors, (22), 5 states have call predecessors, (22), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2025-03-09 00:37:50,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1656 states to 1656 states and 2003 transitions. [2025-03-09 00:37:50,067 INFO L78 Accepts]: Start accepts. Automaton has 1656 states and 2003 transitions. Word has length 37 [2025-03-09 00:37:50,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:37:50,067 INFO L471 AbstractCegarLoop]: Abstraction has 1656 states and 2003 transitions. [2025-03-09 00:37:50,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:37:50,067 INFO L276 IsEmpty]: Start isEmpty. Operand 1656 states and 2003 transitions. [2025-03-09 00:37:50,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2025-03-09 00:37:50,069 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:37:50,070 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] [2025-03-09 00:37:50,080 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-03-09 00:37:50,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:37:50,270 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 622 more)] === [2025-03-09 00:37:50,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:37:50,271 INFO L85 PathProgramCache]: Analyzing trace with hash 309519805, now seen corresponding path program 1 times [2025-03-09 00:37:50,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:37:50,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1052859018] [2025-03-09 00:37:50,271 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:37:50,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:37:50,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:37:50,273 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:37:50,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-09 00:37:50,389 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 53 statements into 1 equivalence classes. [2025-03-09 00:37:50,442 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 53 of 53 statements. [2025-03-09 00:37:50,442 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:37:50,442 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:37:50,449 INFO L256 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 00:37:50,451 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:37:50,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:37:50,486 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:37:50,486 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:37:50,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052859018] [2025-03-09 00:37:50,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1052859018] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:37:50,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:37:50,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:37:50,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102831189] [2025-03-09 00:37:50,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:37:50,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:37:50,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:37:50,487 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:37:50,487 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:37:50,487 INFO L87 Difference]: Start difference. First operand 1656 states and 2003 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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) [2025-03-09 00:37:50,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:37:50,566 INFO L93 Difference]: Finished difference Result 1345 states and 1567 transitions. [2025-03-09 00:37:50,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 00:37:50,567 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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 53 [2025-03-09 00:37:50,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:37:50,569 INFO L225 Difference]: With dead ends: 1345 [2025-03-09 00:37:50,569 INFO L226 Difference]: Without dead ends: 1345 [2025-03-09 00:37:50,569 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:37:50,570 INFO L435 NwaCegarLoop]: 1111 mSDtfsCounter, 56 mSDsluCounter, 2149 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 3260 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 [2025-03-09 00:37:50,570 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 3260 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-09 00:37:50,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1345 states. [2025-03-09 00:37:50,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1345 to 1343. [2025-03-09 00:37:50,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1343 states, 849 states have (on average 1.7962308598351002) internal successors, (1525), 1320 states have internal predecessors, (1525), 22 states have call successors, (22), 5 states have call predecessors, (22), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2025-03-09 00:37:50,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1343 states to 1343 states and 1565 transitions. [2025-03-09 00:37:50,581 INFO L78 Accepts]: Start accepts. Automaton has 1343 states and 1565 transitions. Word has length 53 [2025-03-09 00:37:50,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:37:50,581 INFO L471 AbstractCegarLoop]: Abstraction has 1343 states and 1565 transitions. [2025-03-09 00:37:50,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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) [2025-03-09 00:37:50,581 INFO L276 IsEmpty]: Start isEmpty. Operand 1343 states and 1565 transitions. [2025-03-09 00:37:50,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2025-03-09 00:37:50,582 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:37:50,582 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] [2025-03-09 00:37:50,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-03-09 00:37:50,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:37:50,786 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 622 more)] === [2025-03-09 00:37:50,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:37:50,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1787766651, now seen corresponding path program 1 times [2025-03-09 00:37:50,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:37:50,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2104482503] [2025-03-09 00:37:50,787 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:37:50,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:37:50,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:37:50,789 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:37:50,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-03-09 00:37:50,913 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 61 statements into 1 equivalence classes. [2025-03-09 00:37:50,991 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 61 of 61 statements. [2025-03-09 00:37:50,991 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:37:50,991 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:37:51,001 INFO L256 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-09 00:37:51,007 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:37:51,032 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2025-03-09 00:37:51,033 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2025-03-09 00:37:51,056 INFO L349 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2025-03-09 00:37:51,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 17 [2025-03-09 00:37:51,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:37:51,270 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:37:51,270 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:37:51,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104482503] [2025-03-09 00:37:51,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104482503] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:37:51,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:37:51,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 00:37:51,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871323472] [2025-03-09 00:37:51,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:37:51,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 00:37:51,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:37:51,271 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 00:37:51,271 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:37:51,271 INFO L87 Difference]: Start difference. First operand 1343 states and 1565 transitions. Second operand has 5 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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) [2025-03-09 00:37:53,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:37:53,489 INFO L93 Difference]: Finished difference Result 2446 states and 2864 transitions. [2025-03-09 00:37:53,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 00:37:53,489 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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 61 [2025-03-09 00:37:53,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:37:53,494 INFO L225 Difference]: With dead ends: 2446 [2025-03-09 00:37:53,494 INFO L226 Difference]: Without dead ends: 2446 [2025-03-09 00:37:53,495 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:37:53,495 INFO L435 NwaCegarLoop]: 879 mSDtfsCounter, 962 mSDsluCounter, 1838 mSDsCounter, 0 mSdLazyCounter, 1989 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 962 SdHoareTripleChecker+Valid, 2717 SdHoareTripleChecker+Invalid, 1992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2025-03-09 00:37:53,495 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [962 Valid, 2717 Invalid, 1992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1989 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2025-03-09 00:37:53,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2446 states. [2025-03-09 00:37:53,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2446 to 1805. [2025-03-09 00:37:53,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1805 states, 1295 states have (on average 1.7806949806949808) internal successors, (2306), 1769 states have internal predecessors, (2306), 35 states have call successors, (35), 9 states have call predecessors, (35), 7 states have return successors, (31), 28 states have call predecessors, (31), 31 states have call successors, (31) [2025-03-09 00:37:53,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1805 states to 1805 states and 2372 transitions. [2025-03-09 00:37:53,510 INFO L78 Accepts]: Start accepts. Automaton has 1805 states and 2372 transitions. Word has length 61 [2025-03-09 00:37:53,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:37:53,511 INFO L471 AbstractCegarLoop]: Abstraction has 1805 states and 2372 transitions. [2025-03-09 00:37:53,511 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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) [2025-03-09 00:37:53,511 INFO L276 IsEmpty]: Start isEmpty. Operand 1805 states and 2372 transitions. [2025-03-09 00:37:53,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2025-03-09 00:37:53,511 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:37:53,511 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] [2025-03-09 00:37:53,522 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-03-09 00:37:53,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:37:53,712 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 622 more)] === [2025-03-09 00:37:53,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:37:53,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1787766650, now seen corresponding path program 1 times [2025-03-09 00:37:53,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:37:53,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [620088591] [2025-03-09 00:37:53,713 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:37:53,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:37:53,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:37:53,736 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:37:53,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-03-09 00:37:53,879 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 61 statements into 1 equivalence classes. [2025-03-09 00:37:53,957 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 61 of 61 statements. [2025-03-09 00:37:53,957 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:37:53,957 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:37:53,966 INFO L256 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-03-09 00:37:53,968 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:37:54,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-09 00:37:54,004 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-03-09 00:37:54,048 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2025-03-09 00:37:54,048 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2025-03-09 00:37:54,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:37:54,449 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:37:54,449 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:37:54,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620088591] [2025-03-09 00:37:54,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620088591] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:37:54,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:37:54,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:37:54,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960553275] [2025-03-09 00:37:54,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:37:54,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 00:37:54,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:37:54,449 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 00:37:54,449 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-09 00:37:54,450 INFO L87 Difference]: Start difference. First operand 1805 states and 2372 transitions. Second operand has 6 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2025-03-09 00:37:56,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:37:56,987 INFO L93 Difference]: Finished difference Result 1810 states and 2378 transitions. [2025-03-09 00:37:56,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 00:37:56,988 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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 61 [2025-03-09 00:37:56,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:37:56,990 INFO L225 Difference]: With dead ends: 1810 [2025-03-09 00:37:56,990 INFO L226 Difference]: Without dead ends: 1810 [2025-03-09 00:37:56,991 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2025-03-09 00:37:56,991 INFO L435 NwaCegarLoop]: 1098 mSDtfsCounter, 77 mSDsluCounter, 2137 mSDsCounter, 0 mSdLazyCounter, 2389 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 3235 SdHoareTripleChecker+Invalid, 2391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-03-09 00:37:56,991 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 3235 Invalid, 2391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2389 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-03-09 00:37:56,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1810 states. [2025-03-09 00:37:57,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1810 to 1810. [2025-03-09 00:37:57,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1810 states, 1299 states have (on average 1.7782909930715936) internal successors, (2310), 1773 states have internal predecessors, (2310), 36 states have call successors, (36), 10 states have call predecessors, (36), 7 states have return successors, (32), 28 states have call predecessors, (32), 32 states have call successors, (32) [2025-03-09 00:37:57,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1810 states to 1810 states and 2378 transitions. [2025-03-09 00:37:57,009 INFO L78 Accepts]: Start accepts. Automaton has 1810 states and 2378 transitions. Word has length 61 [2025-03-09 00:37:57,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:37:57,010 INFO L471 AbstractCegarLoop]: Abstraction has 1810 states and 2378 transitions. [2025-03-09 00:37:57,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2025-03-09 00:37:57,010 INFO L276 IsEmpty]: Start isEmpty. Operand 1810 states and 2378 transitions. [2025-03-09 00:37:57,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-03-09 00:37:57,010 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:37:57,010 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:37:57,021 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-03-09 00:37:57,211 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:37:57,211 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 622 more)] === [2025-03-09 00:37:57,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:37:57,211 INFO L85 PathProgramCache]: Analyzing trace with hash -735543096, now seen corresponding path program 1 times [2025-03-09 00:37:57,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:37:57,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [853313896] [2025-03-09 00:37:57,212 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:37:57,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:37:57,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:37:57,214 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:37:57,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-03-09 00:37:57,357 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-03-09 00:37:57,422 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-03-09 00:37:57,422 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:37:57,422 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:37:57,431 INFO L256 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-09 00:37:57,434 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:37:57,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:37:57,528 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:37:57,528 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:37:57,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853313896] [2025-03-09 00:37:57,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853313896] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:37:57,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:37:57,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-09 00:37:57,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853472612] [2025-03-09 00:37:57,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:37:57,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-09 00:37:57,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:37:57,529 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-09 00:37:57,529 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-09 00:37:57,529 INFO L87 Difference]: Start difference. First operand 1810 states and 2378 transitions. Second operand has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:37:57,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:37:57,594 INFO L93 Difference]: Finished difference Result 1818 states and 2386 transitions. [2025-03-09 00:37:57,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-09 00:37:57,594 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2025-03-09 00:37:57,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:37:57,597 INFO L225 Difference]: With dead ends: 1818 [2025-03-09 00:37:57,597 INFO L226 Difference]: Without dead ends: 1818 [2025-03-09 00:37:57,597 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2025-03-09 00:37:57,597 INFO L435 NwaCegarLoop]: 1119 mSDtfsCounter, 25 mSDsluCounter, 4545 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 5664 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-09 00:37:57,597 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 5664 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-09 00:37:57,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1818 states. [2025-03-09 00:37:57,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1818 to 1817. [2025-03-09 00:37:57,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1817 states, 1304 states have (on average 1.7753067484662577) internal successors, (2315), 1779 states have internal predecessors, (2315), 37 states have call successors, (37), 11 states have call predecessors, (37), 8 states have return successors, (33), 28 states have call predecessors, (33), 33 states have call successors, (33) [2025-03-09 00:37:57,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1817 states to 1817 states and 2385 transitions. [2025-03-09 00:37:57,612 INFO L78 Accepts]: Start accepts. Automaton has 1817 states and 2385 transitions. Word has length 69 [2025-03-09 00:37:57,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:37:57,612 INFO L471 AbstractCegarLoop]: Abstraction has 1817 states and 2385 transitions. [2025-03-09 00:37:57,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:37:57,612 INFO L276 IsEmpty]: Start isEmpty. Operand 1817 states and 2385 transitions. [2025-03-09 00:37:57,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2025-03-09 00:37:57,613 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:37:57,613 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] [2025-03-09 00:37:57,624 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-03-09 00:37:57,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:37:57,813 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr517REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 622 more)] === [2025-03-09 00:37:57,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:37:57,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1439500537, now seen corresponding path program 1 times [2025-03-09 00:37:57,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:37:57,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [894871352] [2025-03-09 00:37:57,814 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:37:57,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:37:57,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:37:57,816 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:37:57,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-03-09 00:37:57,947 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 72 statements into 1 equivalence classes. [2025-03-09 00:37:58,023 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 72 of 72 statements. [2025-03-09 00:37:58,023 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:37:58,023 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:37:58,033 INFO L256 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-09 00:37:58,035 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:37:58,155 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2025-03-09 00:37:58,155 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2025-03-09 00:37:58,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:37:58,159 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:37:58,159 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:37:58,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894871352] [2025-03-09 00:37:58,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894871352] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:37:58,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:37:58,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:37:58,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534034620] [2025-03-09 00:37:58,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:37:58,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 00:37:58,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:37:58,160 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 00:37:58,160 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:37:58,161 INFO L87 Difference]: Start difference. First operand 1817 states and 2385 transitions. Second operand has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-09 00:38:02,714 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-09 00:38:05,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:38:05,574 INFO L93 Difference]: Finished difference Result 2208 states and 2891 transitions. [2025-03-09 00:38:05,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 00:38:05,575 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 72 [2025-03-09 00:38:05,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:38:05,578 INFO L225 Difference]: With dead ends: 2208 [2025-03-09 00:38:05,578 INFO L226 Difference]: Without dead ends: 2208 [2025-03-09 00:38:05,579 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-09 00:38:05,579 INFO L435 NwaCegarLoop]: 693 mSDtfsCounter, 757 mSDsluCounter, 1417 mSDsCounter, 0 mSdLazyCounter, 1874 mSolverCounterSat, 29 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 2110 SdHoareTripleChecker+Invalid, 1906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1874 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2025-03-09 00:38:05,579 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [760 Valid, 2110 Invalid, 1906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1874 Invalid, 3 Unknown, 0 Unchecked, 7.4s Time] [2025-03-09 00:38:05,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2208 states. [2025-03-09 00:38:05,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2208 to 1814. [2025-03-09 00:38:05,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1814 states, 1304 states have (on average 1.7707055214723926) internal successors, (2309), 1776 states have internal predecessors, (2309), 37 states have call successors, (37), 11 states have call predecessors, (37), 8 states have return successors, (33), 28 states have call predecessors, (33), 33 states have call successors, (33) [2025-03-09 00:38:05,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1814 states to 1814 states and 2379 transitions. [2025-03-09 00:38:05,599 INFO L78 Accepts]: Start accepts. Automaton has 1814 states and 2379 transitions. Word has length 72 [2025-03-09 00:38:05,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:38:05,599 INFO L471 AbstractCegarLoop]: Abstraction has 1814 states and 2379 transitions. [2025-03-09 00:38:05,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-09 00:38:05,599 INFO L276 IsEmpty]: Start isEmpty. Operand 1814 states and 2379 transitions. [2025-03-09 00:38:05,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2025-03-09 00:38:05,600 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:38:05,600 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] [2025-03-09 00:38:05,612 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-03-09 00:38:05,800 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 [2025-03-09 00:38:05,800 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr518REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 622 more)] === [2025-03-09 00:38:05,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:38:05,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1439500538, now seen corresponding path program 1 times [2025-03-09 00:38:05,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:38:05,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1165842669] [2025-03-09 00:38:05,801 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:38:05,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:38:05,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:38:05,803 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) [2025-03-09 00:38:05,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-03-09 00:38:05,962 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 72 statements into 1 equivalence classes. [2025-03-09 00:38:06,044 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 72 of 72 statements. [2025-03-09 00:38:06,044 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:38:06,044 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:38:06,054 INFO L256 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-03-09 00:38:06,056 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:38:06,060 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 [2025-03-09 00:38:06,362 WARN L873 $PredicateComparison]: unable to prove that (exists ((|alt_malloc_#res.base| (_ BitVec 32))) (and (= (store |c_old(#length)| |alt_malloc_#res.base| (select |c_#length| |alt_malloc_#res.base|)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| |alt_malloc_#res.base|)))) is different from true [2025-03-09 00:38:06,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-09 00:38:06,375 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-03-09 00:38:06,387 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-09 00:38:06,387 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-03-09 00:38:06,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:38:06,390 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:38:06,390 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:38:06,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165842669] [2025-03-09 00:38:06,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165842669] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:38:06,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:38:06,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-09 00:38:06,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202197477] [2025-03-09 00:38:06,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:38:06,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-09 00:38:06,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:38:06,391 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-09 00:38:06,391 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=21, Unknown=1, NotChecked=8, Total=42 [2025-03-09 00:38:06,392 INFO L87 Difference]: Start difference. First operand 1814 states and 2379 transitions. Second operand has 7 states, 6 states have (on average 11.333333333333334) internal successors, (68), 7 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-09 00:38:10,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:38:10,043 INFO L93 Difference]: Finished difference Result 2836 states and 3695 transitions. [2025-03-09 00:38:10,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-09 00:38:10,044 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.333333333333334) internal successors, (68), 7 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 72 [2025-03-09 00:38:10,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:38:10,048 INFO L225 Difference]: With dead ends: 2836 [2025-03-09 00:38:10,048 INFO L226 Difference]: Without dead ends: 2836 [2025-03-09 00:38:10,048 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=28, Unknown=1, NotChecked=10, Total=56 [2025-03-09 00:38:10,048 INFO L435 NwaCegarLoop]: 1157 mSDtfsCounter, 1395 mSDsluCounter, 1738 mSDsCounter, 0 mSdLazyCounter, 3039 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1398 SdHoareTripleChecker+Valid, 2895 SdHoareTripleChecker+Invalid, 4980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 3039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1913 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2025-03-09 00:38:10,048 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1398 Valid, 2895 Invalid, 4980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 3039 Invalid, 0 Unknown, 1913 Unchecked, 3.6s Time] [2025-03-09 00:38:10,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2836 states. [2025-03-09 00:38:10,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2836 to 1806. [2025-03-09 00:38:10,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1806 states, 1304 states have (on average 1.758435582822086) internal successors, (2293), 1768 states have internal predecessors, (2293), 37 states have call successors, (37), 11 states have call predecessors, (37), 8 states have return successors, (33), 28 states have call predecessors, (33), 33 states have call successors, (33) [2025-03-09 00:38:10,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1806 states to 1806 states and 2363 transitions. [2025-03-09 00:38:10,065 INFO L78 Accepts]: Start accepts. Automaton has 1806 states and 2363 transitions. Word has length 72 [2025-03-09 00:38:10,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:38:10,065 INFO L471 AbstractCegarLoop]: Abstraction has 1806 states and 2363 transitions. [2025-03-09 00:38:10,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.333333333333334) internal successors, (68), 7 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-09 00:38:10,065 INFO L276 IsEmpty]: Start isEmpty. Operand 1806 states and 2363 transitions. [2025-03-09 00:38:10,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-03-09 00:38:10,066 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:38:10,066 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, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:38:10,077 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-03-09 00:38:10,266 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 [2025-03-09 00:38:10,266 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting alt_bzeroErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 622 more)] === [2025-03-09 00:38:10,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:38:10,267 INFO L85 PathProgramCache]: Analyzing trace with hash -530052229, now seen corresponding path program 1 times [2025-03-09 00:38:10,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:38:10,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1848088312] [2025-03-09 00:38:10,267 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:38:10,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:38:10,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:38:10,269 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:38:10,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-03-09 00:38:10,404 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-03-09 00:38:10,477 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-03-09 00:38:10,477 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:38:10,477 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:38:10,487 INFO L256 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-09 00:38:10,489 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:38:10,493 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-09 00:38:10,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-09 00:38:10,525 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-03-09 00:38:10,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:38:10,546 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:38:10,546 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:38:10,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848088312] [2025-03-09 00:38:10,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848088312] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:38:10,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:38:10,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-09 00:38:10,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173193245] [2025-03-09 00:38:10,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:38:10,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-09 00:38:10,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:38:10,547 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-09 00:38:10,547 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-09 00:38:10,547 INFO L87 Difference]: Start difference. First operand 1806 states and 2363 transitions. Second operand has 8 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-09 00:38:13,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:38:13,193 INFO L93 Difference]: Finished difference Result 1821 states and 2379 transitions. [2025-03-09 00:38:13,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-09 00:38:13,193 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 79 [2025-03-09 00:38:13,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:38:13,196 INFO L225 Difference]: With dead ends: 1821 [2025-03-09 00:38:13,196 INFO L226 Difference]: Without dead ends: 1821 [2025-03-09 00:38:13,196 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2025-03-09 00:38:13,196 INFO L435 NwaCegarLoop]: 1105 mSDtfsCounter, 16 mSDsluCounter, 3649 mSDsCounter, 0 mSdLazyCounter, 3036 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 4754 SdHoareTripleChecker+Invalid, 3038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2025-03-09 00:38:13,197 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 4754 Invalid, 3038 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3036 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2025-03-09 00:38:13,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1821 states. [2025-03-09 00:38:13,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1821 to 1820. [2025-03-09 00:38:13,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1820 states, 1316 states have (on average 1.7545592705167172) internal successors, (2309), 1780 states have internal predecessors, (2309), 37 states have call successors, (37), 13 states have call predecessors, (37), 10 states have return successors, (33), 28 states have call predecessors, (33), 33 states have call successors, (33) [2025-03-09 00:38:13,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1820 states to 1820 states and 2379 transitions. [2025-03-09 00:38:13,213 INFO L78 Accepts]: Start accepts. Automaton has 1820 states and 2379 transitions. Word has length 79 [2025-03-09 00:38:13,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:38:13,213 INFO L471 AbstractCegarLoop]: Abstraction has 1820 states and 2379 transitions. [2025-03-09 00:38:13,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-09 00:38:13,213 INFO L276 IsEmpty]: Start isEmpty. Operand 1820 states and 2379 transitions. [2025-03-09 00:38:13,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2025-03-09 00:38:13,214 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:38:13,214 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, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:38:13,225 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-03-09 00:38:13,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:38:13,414 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting alt_bzeroErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 622 more)] === [2025-03-09 00:38:13,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:38:13,415 INFO L85 PathProgramCache]: Analyzing trace with hash 748250089, now seen corresponding path program 1 times [2025-03-09 00:38:13,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:38:13,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1067543461] [2025-03-09 00:38:13,415 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:38:13,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:38:13,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:38:13,417 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:38:13,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-03-09 00:38:13,563 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 80 statements into 1 equivalence classes. [2025-03-09 00:38:13,637 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 80 of 80 statements. [2025-03-09 00:38:13,637 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:38:13,637 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:38:13,647 INFO L256 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-03-09 00:38:13,649 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:38:13,661 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-09 00:38:13,690 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-09 00:38:13,695 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-03-09 00:38:13,722 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2025-03-09 00:38:13,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:38:13,769 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:38:13,770 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:38:13,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067543461] [2025-03-09 00:38:13,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067543461] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:38:13,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:38:13,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-09 00:38:13,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001011684] [2025-03-09 00:38:13,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:38:13,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-09 00:38:13,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:38:13,771 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-09 00:38:13,771 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-09 00:38:13,771 INFO L87 Difference]: Start difference. First operand 1820 states and 2379 transitions. Second operand has 9 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-09 00:38:17,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:38:17,318 INFO L93 Difference]: Finished difference Result 1820 states and 2377 transitions. [2025-03-09 00:38:17,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-09 00:38:17,318 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 80 [2025-03-09 00:38:17,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:38:17,321 INFO L225 Difference]: With dead ends: 1820 [2025-03-09 00:38:17,321 INFO L226 Difference]: Without dead ends: 1820 [2025-03-09 00:38:17,321 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2025-03-09 00:38:17,321 INFO L435 NwaCegarLoop]: 1101 mSDtfsCounter, 13 mSDsluCounter, 4566 mSDsCounter, 0 mSdLazyCounter, 3234 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 5667 SdHoareTripleChecker+Invalid, 3235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2025-03-09 00:38:17,323 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 5667 Invalid, 3235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3234 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2025-03-09 00:38:17,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1820 states. [2025-03-09 00:38:17,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1820 to 1820. [2025-03-09 00:38:17,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1820 states, 1316 states have (on average 1.7530395136778116) internal successors, (2307), 1780 states have internal predecessors, (2307), 37 states have call successors, (37), 13 states have call predecessors, (37), 10 states have return successors, (33), 28 states have call predecessors, (33), 33 states have call successors, (33) [2025-03-09 00:38:17,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1820 states to 1820 states and 2377 transitions. [2025-03-09 00:38:17,336 INFO L78 Accepts]: Start accepts. Automaton has 1820 states and 2377 transitions. Word has length 80 [2025-03-09 00:38:17,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:38:17,336 INFO L471 AbstractCegarLoop]: Abstraction has 1820 states and 2377 transitions. [2025-03-09 00:38:17,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-09 00:38:17,336 INFO L276 IsEmpty]: Start isEmpty. Operand 1820 states and 2377 transitions. [2025-03-09 00:38:17,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2025-03-09 00:38:17,336 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:38:17,337 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:38:17,347 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-03-09 00:38:17,537 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 [2025-03-09 00:38:17,537 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr509REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 622 more)] === [2025-03-09 00:38:17,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:38:17,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1762812187, now seen corresponding path program 1 times [2025-03-09 00:38:17,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:38:17,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [718818745] [2025-03-09 00:38:17,538 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:38:17,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:38:17,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:38:17,541 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) [2025-03-09 00:38:17,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-03-09 00:38:17,716 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 87 statements into 1 equivalence classes. [2025-03-09 00:38:17,788 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 87 of 87 statements. [2025-03-09 00:38:17,788 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:38:17,788 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:38:17,797 INFO L256 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-09 00:38:17,799 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:38:17,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-09 00:38:17,856 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-03-09 00:38:17,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:38:17,864 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:38:17,864 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:38:17,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718818745] [2025-03-09 00:38:17,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718818745] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:38:17,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:38:17,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-09 00:38:17,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43756675] [2025-03-09 00:38:17,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:38:17,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-09 00:38:17,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:38:17,865 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-09 00:38:17,865 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-09 00:38:17,865 INFO L87 Difference]: Start difference. First operand 1820 states and 2377 transitions. Second operand has 8 states, 6 states have (on average 13.5) internal successors, (81), 7 states have internal predecessors, (81), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-09 00:38:20,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:38:20,540 INFO L93 Difference]: Finished difference Result 1851 states and 2417 transitions. [2025-03-09 00:38:20,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-09 00:38:20,543 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 13.5) internal successors, (81), 7 states have internal predecessors, (81), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 87 [2025-03-09 00:38:20,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:38:20,547 INFO L225 Difference]: With dead ends: 1851 [2025-03-09 00:38:20,547 INFO L226 Difference]: Without dead ends: 1851 [2025-03-09 00:38:20,548 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2025-03-09 00:38:20,549 INFO L435 NwaCegarLoop]: 1067 mSDtfsCounter, 43 mSDsluCounter, 4203 mSDsCounter, 0 mSdLazyCounter, 2474 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 5270 SdHoareTripleChecker+Invalid, 2491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2025-03-09 00:38:20,549 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 5270 Invalid, 2491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2474 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2025-03-09 00:38:20,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1851 states. [2025-03-09 00:38:20,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1851 to 1834. [2025-03-09 00:38:20,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1834 states, 1328 states have (on average 1.7492469879518073) internal successors, (2323), 1792 states have internal predecessors, (2323), 37 states have call successors, (37), 13 states have call predecessors, (37), 12 states have return successors, (35), 30 states have call predecessors, (35), 33 states have call successors, (35) [2025-03-09 00:38:20,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1834 states to 1834 states and 2395 transitions. [2025-03-09 00:38:20,566 INFO L78 Accepts]: Start accepts. Automaton has 1834 states and 2395 transitions. Word has length 87 [2025-03-09 00:38:20,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:38:20,566 INFO L471 AbstractCegarLoop]: Abstraction has 1834 states and 2395 transitions. [2025-03-09 00:38:20,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 13.5) internal successors, (81), 7 states have internal predecessors, (81), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-09 00:38:20,566 INFO L276 IsEmpty]: Start isEmpty. Operand 1834 states and 2395 transitions. [2025-03-09 00:38:20,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2025-03-09 00:38:20,566 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:38:20,566 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:38:20,578 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2025-03-09 00:38:20,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:38:20,767 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr510REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 622 more)] === [2025-03-09 00:38:20,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:38:20,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1762812188, now seen corresponding path program 1 times [2025-03-09 00:38:20,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:38:20,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [108025968] [2025-03-09 00:38:20,768 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:38:20,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:38:20,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:38:20,770 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:38:20,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-03-09 00:38:20,928 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 87 statements into 1 equivalence classes. [2025-03-09 00:38:21,005 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 87 of 87 statements. [2025-03-09 00:38:21,006 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:38:21,006 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:38:21,017 INFO L256 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 00:38:21,022 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:38:21,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:38:21,050 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:38:21,051 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:38:21,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108025968] [2025-03-09 00:38:21,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108025968] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:38:21,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:38:21,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-09 00:38:21,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153949797] [2025-03-09 00:38:21,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:38:21,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 00:38:21,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:38:21,051 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 00:38:21,051 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:38:21,051 INFO L87 Difference]: Start difference. First operand 1834 states and 2395 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2025-03-09 00:38:21,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:38:21,084 INFO L93 Difference]: Finished difference Result 1836 states and 2395 transitions. [2025-03-09 00:38:21,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 00:38:21,085 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 87 [2025-03-09 00:38:21,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:38:21,087 INFO L225 Difference]: With dead ends: 1836 [2025-03-09 00:38:21,087 INFO L226 Difference]: Without dead ends: 1830 [2025-03-09 00:38:21,088 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:38:21,088 INFO L435 NwaCegarLoop]: 1110 mSDtfsCounter, 3 mSDsluCounter, 2211 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 3321 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-09 00:38:21,088 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 3321 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-09 00:38:21,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1830 states. [2025-03-09 00:38:21,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1830 to 1830. [2025-03-09 00:38:21,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1830 states, 1324 states have (on average 1.75) internal successors, (2317), 1790 states have internal predecessors, (2317), 37 states have call successors, (37), 13 states have call predecessors, (37), 12 states have return successors, (35), 28 states have call predecessors, (35), 33 states have call successors, (35) [2025-03-09 00:38:21,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1830 states to 1830 states and 2389 transitions. [2025-03-09 00:38:21,106 INFO L78 Accepts]: Start accepts. Automaton has 1830 states and 2389 transitions. Word has length 87 [2025-03-09 00:38:21,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:38:21,106 INFO L471 AbstractCegarLoop]: Abstraction has 1830 states and 2389 transitions. [2025-03-09 00:38:21,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2025-03-09 00:38:21,106 INFO L276 IsEmpty]: Start isEmpty. Operand 1830 states and 2389 transitions. [2025-03-09 00:38:21,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2025-03-09 00:38:21,107 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:38:21,107 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:38:21,122 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2025-03-09 00:38:21,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:38:21,308 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr509REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 622 more)] === [2025-03-09 00:38:21,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:38:21,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1611731403, now seen corresponding path program 1 times [2025-03-09 00:38:21,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:38:21,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2128021981] [2025-03-09 00:38:21,308 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:38:21,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:38:21,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:38:21,310 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) [2025-03-09 00:38:21,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-03-09 00:38:21,474 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-03-09 00:38:21,557 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-03-09 00:38:21,557 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:38:21,557 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:38:21,567 INFO L256 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-09 00:38:21,569 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:38:21,595 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:38:21,595 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 00:38:21,691 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:38:21,691 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:38:21,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128021981] [2025-03-09 00:38:21,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128021981] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 00:38:21,692 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-09 00:38:21,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2025-03-09 00:38:21,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200300401] [2025-03-09 00:38:21,692 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-09 00:38:21,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-09 00:38:21,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:38:21,692 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-09 00:38:21,692 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2025-03-09 00:38:21,692 INFO L87 Difference]: Start difference. First operand 1830 states and 2389 transitions. Second operand has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2025-03-09 00:38:21,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:38:21,823 INFO L93 Difference]: Finished difference Result 1856 states and 2419 transitions. [2025-03-09 00:38:21,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-09 00:38:21,823 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 88 [2025-03-09 00:38:21,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:38:21,826 INFO L225 Difference]: With dead ends: 1856 [2025-03-09 00:38:21,826 INFO L226 Difference]: Without dead ends: 1844 [2025-03-09 00:38:21,826 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=130, Unknown=0, NotChecked=0, Total=210 [2025-03-09 00:38:21,827 INFO L435 NwaCegarLoop]: 1110 mSDtfsCounter, 20 mSDsluCounter, 4418 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 5528 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-09 00:38:21,827 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 5528 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-09 00:38:21,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1844 states. [2025-03-09 00:38:21,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1844 to 1838. [2025-03-09 00:38:21,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1838 states, 1332 states have (on average 1.746996996996997) internal successors, (2327), 1798 states have internal predecessors, (2327), 37 states have call successors, (37), 13 states have call predecessors, (37), 12 states have return successors, (35), 28 states have call predecessors, (35), 33 states have call successors, (35) [2025-03-09 00:38:21,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1838 states to 1838 states and 2399 transitions. [2025-03-09 00:38:21,839 INFO L78 Accepts]: Start accepts. Automaton has 1838 states and 2399 transitions. Word has length 88 [2025-03-09 00:38:21,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:38:21,839 INFO L471 AbstractCegarLoop]: Abstraction has 1838 states and 2399 transitions. [2025-03-09 00:38:21,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2025-03-09 00:38:21,839 INFO L276 IsEmpty]: Start isEmpty. Operand 1838 states and 2399 transitions. [2025-03-09 00:38:21,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-09 00:38:21,840 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:38:21,840 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:38:21,850 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2025-03-09 00:38:22,040 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 [2025-03-09 00:38:22,041 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr509REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 622 more)] === [2025-03-09 00:38:22,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:38:22,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1953428197, now seen corresponding path program 2 times [2025-03-09 00:38:22,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:38:22,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [432190079] [2025-03-09 00:38:22,042 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 00:38:22,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:38:22,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:38:22,044 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) [2025-03-09 00:38:22,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-03-09 00:38:22,206 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 91 statements into 2 equivalence classes.