./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test2-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 798a7b37 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_JEN_nondet_test2-2.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 0fdcb64865aeb8184805095bc8dbe7392078d445cf902388dac9d1ca4533bb8c --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 09:25:30,622 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 09:25:30,665 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-04 09:25:30,670 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 09:25:30,672 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 09:25:30,690 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 09:25:30,692 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 09:25:30,692 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 09:25:30,692 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 09:25:30,692 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 09:25:30,692 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 09:25:30,693 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 09:25:30,693 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 09:25:30,693 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 09:25:30,693 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 09:25:30,693 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 09:25:30,693 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 09:25:30,693 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 09:25:30,693 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 09:25:30,693 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 09:25:30,693 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-04 09:25:30,693 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-04 09:25:30,693 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-04 09:25:30,693 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 09:25:30,693 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-04 09:25:30,693 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 09:25:30,693 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 09:25:30,693 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 09:25:30,693 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 09:25:30,694 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 09:25:30,694 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 09:25:30,694 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 09:25:30,694 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 09:25:30,694 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 09:25:30,694 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 09:25:30,694 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 09:25:30,694 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 09:25:30,694 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 09:25:30,694 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 09:25:30,694 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 09:25:30,694 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 09:25:30,694 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 09:25:30,694 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 -> 0fdcb64865aeb8184805095bc8dbe7392078d445cf902388dac9d1ca4533bb8c [2025-03-04 09:25:30,894 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 09:25:30,902 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 09:25:30,904 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 09:25:30,905 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 09:25:30,905 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 09:25:30,906 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test2-2.i [2025-03-04 09:25:32,051 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3f7be898/5f55aeac3c214d7a961865c6afcc3cad/FLAGd5cd46329 [2025-03-04 09:25:32,311 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 09:25:32,311 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test2-2.i [2025-03-04 09:25:32,328 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3f7be898/5f55aeac3c214d7a961865c6afcc3cad/FLAGd5cd46329 [2025-03-04 09:25:32,612 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3f7be898/5f55aeac3c214d7a961865c6afcc3cad [2025-03-04 09:25:32,614 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 09:25:32,614 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 09:25:32,615 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 09:25:32,615 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 09:25:32,618 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 09:25:32,619 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:25:32" (1/1) ... [2025-03-04 09:25:32,619 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46cd2dac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:25:32, skipping insertion in model container [2025-03-04 09:25:32,619 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:25:32" (1/1) ... [2025-03-04 09:25:32,650 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 09:25:32,944 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:25:32,970 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:25:32,974 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:25:32,976 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:25:32,980 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:25:33,000 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:25:33,001 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:25:33,003 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:25:33,003 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:25:33,004 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:25:33,005 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:25:33,006 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:25:33,007 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:25:33,007 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:25:33,010 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:25:33,014 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:25:33,023 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) [2025-03-04 09:25:33,024 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6dd1a699 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:25:33, skipping insertion in model container [2025-03-04 09:25:33,027 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 09:25:33,027 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-03-04 09:25:33,028 INFO L158 Benchmark]: Toolchain (without parser) took 413.16ms. Allocated memory is still 167.8MB. Free memory was 131.3MB in the beginning and 111.7MB in the end (delta: 19.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-04 09:25:33,028 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 201.3MB. Free memory is still 124.1MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 09:25:33,029 INFO L158 Benchmark]: CACSL2BoogieTranslator took 411.57ms. Allocated memory is still 167.8MB. Free memory was 131.3MB in the beginning and 111.7MB in the end (delta: 19.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-04 09:25:33,029 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 201.3MB. Free memory is still 124.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 411.57ms. Allocated memory is still 167.8MB. Free memory was 131.3MB in the beginning and 111.7MB in the end (delta: 19.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 831]: 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_JEN_nondet_test2-2.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 0fdcb64865aeb8184805095bc8dbe7392078d445cf902388dac9d1ca4533bb8c --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 09:25:34,721 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 09:25:34,798 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-03-04 09:25:34,802 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 09:25:34,802 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 09:25:34,824 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 09:25:34,824 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 09:25:34,825 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 09:25:34,825 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 09:25:34,825 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 09:25:34,826 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 09:25:34,826 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 09:25:34,826 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 09:25:34,826 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 09:25:34,826 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 09:25:34,826 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 09:25:34,826 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 09:25:34,826 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 09:25:34,826 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 09:25:34,826 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 09:25:34,826 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-04 09:25:34,827 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-04 09:25:34,827 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-04 09:25:34,827 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 09:25:34,827 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-04 09:25:34,827 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-04 09:25:34,827 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-04 09:25:34,827 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 09:25:34,827 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 09:25:34,827 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 09:25:34,827 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 09:25:34,827 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 09:25:34,827 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 09:25:34,828 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 09:25:34,828 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 09:25:34,828 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 09:25:34,828 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 09:25:34,828 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 09:25:34,828 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-04 09:25:34,828 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-04 09:25:34,828 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 09:25:34,828 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 09:25:34,828 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 09:25:34,828 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 09:25:34,828 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 -> 0fdcb64865aeb8184805095bc8dbe7392078d445cf902388dac9d1ca4533bb8c [2025-03-04 09:25:35,043 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 09:25:35,049 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 09:25:35,051 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 09:25:35,053 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 09:25:35,053 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 09:25:35,054 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test2-2.i [2025-03-04 09:25:36,232 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc7602467/cfed88ab449142a9afc5409c317cde4d/FLAGd76466785 [2025-03-04 09:25:36,466 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 09:25:36,466 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test2-2.i [2025-03-04 09:25:36,476 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc7602467/cfed88ab449142a9afc5409c317cde4d/FLAGd76466785 [2025-03-04 09:25:36,793 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc7602467/cfed88ab449142a9afc5409c317cde4d [2025-03-04 09:25:36,795 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 09:25:36,796 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 09:25:36,797 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 09:25:36,797 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 09:25:36,799 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 09:25:36,800 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:25:36" (1/1) ... [2025-03-04 09:25:36,800 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7707033c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:25:36, skipping insertion in model container [2025-03-04 09:25:36,800 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:25:36" (1/1) ... [2025-03-04 09:25:36,838 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 09:25:37,147 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:25:37,176 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:25:37,179 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:25:37,182 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:25:37,191 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:25:37,220 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:25:37,220 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:25:37,222 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:25:37,222 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:25:37,224 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:25:37,226 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:25:37,227 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:25:37,228 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:25:37,229 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:25:37,231 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:25:37,236 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:25:37,252 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-03-04 09:25:37,267 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 09:25:37,297 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:25:37,310 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:25:37,315 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:25:37,318 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:25:37,321 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:25:37,343 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:25:37,343 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:25:37,351 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:25:37,351 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:25:37,352 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:25:37,357 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:25:37,358 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:25:37,359 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:25:37,359 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:25:37,361 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:25:37,363 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:25:37,367 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 09:25:37,465 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:25:37,501 INFO L204 MainTranslator]: Completed translation [2025-03-04 09:25:37,501 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:25:37 WrapperNode [2025-03-04 09:25:37,502 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 09:25:37,503 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 09:25:37,503 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 09:25:37,503 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 09:25:37,507 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:25:37" (1/1) ... [2025-03-04 09:25:37,538 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:25:37" (1/1) ... [2025-03-04 09:25:37,587 INFO L138 Inliner]: procedures = 210, calls = 273, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1014 [2025-03-04 09:25:37,588 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 09:25:37,588 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 09:25:37,588 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 09:25:37,591 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 09:25:37,597 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:25:37" (1/1) ... [2025-03-04 09:25:37,597 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:25:37" (1/1) ... [2025-03-04 09:25:37,607 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:25:37" (1/1) ... [2025-03-04 09:25:37,675 INFO L175 MemorySlicer]: Split 254 memory accesses to 3 slices as follows [2, 34, 218]. 86 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 54 writes are split as follows [0, 4, 50]. [2025-03-04 09:25:37,675 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:25:37" (1/1) ... [2025-03-04 09:25:37,675 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:25:37" (1/1) ... [2025-03-04 09:25:37,716 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:25:37" (1/1) ... [2025-03-04 09:25:37,718 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:25:37" (1/1) ... [2025-03-04 09:25:37,721 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:25:37" (1/1) ... [2025-03-04 09:25:37,723 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:25:37" (1/1) ... [2025-03-04 09:25:37,729 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 09:25:37,732 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 09:25:37,733 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 09:25:37,733 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 09:25:37,733 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:25:37" (1/1) ... [2025-03-04 09:25:37,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 09:25:37,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:25:37,760 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) [2025-03-04 09:25:37,762 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 [2025-03-04 09:25:37,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2025-03-04 09:25:37,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2025-03-04 09:25:37,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2025-03-04 09:25:37,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-03-04 09:25:37,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-03-04 09:25:37,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2025-03-04 09:25:37,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-03-04 09:25:37,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-03-04 09:25:37,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2025-03-04 09:25:37,783 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-03-04 09:25:37,783 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-03-04 09:25:37,783 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2025-03-04 09:25:37,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-04 09:25:37,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-04 09:25:37,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-04 09:25:37,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-04 09:25:37,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-03-04 09:25:37,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-03-04 09:25:37,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2025-03-04 09:25:37,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-04 09:25:37,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-04 09:25:37,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-03-04 09:25:37,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2025-03-04 09:25:37,784 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-04 09:25:37,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 09:25:37,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-04 09:25:37,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-04 09:25:37,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-04 09:25:37,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 09:25:37,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 09:25:37,949 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 09:25:37,950 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 09:25:40,556 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L812: call ULTIMATE.dealloc(main_~#i~0#1.base, main_~#i~0#1.offset);havoc main_~#i~0#1.base, main_~#i~0#1.offset; [2025-03-04 09:25:40,643 INFO L? ?]: Removed 1086 outVars from TransFormulas that were not future-live. [2025-03-04 09:25:40,643 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 09:25:40,672 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 09:25:40,672 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 09:25:40,672 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 09:25:40 BoogieIcfgContainer [2025-03-04 09:25:40,672 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 09:25:40,674 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 09:25:40,674 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 09:25:40,682 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 09:25:40,682 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 09:25:36" (1/3) ... [2025-03-04 09:25:40,683 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@346d0292 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 09:25:40, skipping insertion in model container [2025-03-04 09:25:40,683 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:25:37" (2/3) ... [2025-03-04 09:25:40,683 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@346d0292 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 09:25:40, skipping insertion in model container [2025-03-04 09:25:40,683 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 09:25:40" (3/3) ... [2025-03-04 09:25:40,684 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_JEN_nondet_test2-2.i [2025-03-04 09:25:40,693 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 09:25:40,694 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_JEN_nondet_test2-2.i that has 4 procedures, 1063 locations, 1 initial locations, 36 loop locations, and 525 error locations. [2025-03-04 09:25:40,730 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 09:25:40,738 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;@373f95ee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 09:25:40,738 INFO L334 AbstractCegarLoop]: Starting to check reachability of 525 error locations. [2025-03-04 09:25:40,743 INFO L276 IsEmpty]: Start isEmpty. Operand has 1053 states, 526 states have (on average 2.222433460076046) internal successors, (1169), 1048 states have internal predecessors, (1169), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 09:25:40,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-03-04 09:25:40,746 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:25:40,746 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-03-04 09:25:40,747 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-04 09:25:40,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:25:40,751 INFO L85 PathProgramCache]: Analyzing trace with hash 37400338, now seen corresponding path program 1 times [2025-03-04 09:25:40,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:25:40,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1629310238] [2025-03-04 09:25:40,757 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:25:40,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:25:40,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:25:40,759 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) [2025-03-04 09:25:40,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-04 09:25:40,876 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-04 09:25:40,885 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-04 09:25:40,885 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:25:40,885 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:25:40,887 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-04 09:25:40,889 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:25:40,951 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#i~0#1.base_48| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_48|)) (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_48| (_ bv0 1))))) is different from true [2025-03-04 09:25:40,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:25:40,955 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:25:40,955 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:25:40,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629310238] [2025-03-04 09:25:40,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629310238] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:25:40,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:25:40,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:25:40,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485048340] [2025-03-04 09:25:40,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:25:40,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:25:40,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:25:40,975 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:25:40,976 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2025-03-04 09:25:40,978 INFO L87 Difference]: Start difference. First operand has 1053 states, 526 states have (on average 2.222433460076046) internal successors, (1169), 1048 states have internal predecessors, (1169), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:25:42,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:25:42,412 INFO L93 Difference]: Finished difference Result 1438 states and 1539 transitions. [2025-03-04 09:25:42,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:25:42,414 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2025-03-04 09:25:42,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:25:42,425 INFO L225 Difference]: With dead ends: 1438 [2025-03-04 09:25:42,425 INFO L226 Difference]: Without dead ends: 1435 [2025-03-04 09:25:42,426 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2025-03-04 09:25:42,428 INFO L435 NwaCegarLoop]: 905 mSDtfsCounter, 423 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 739 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 1469 SdHoareTripleChecker+Invalid, 2279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1540 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-04 09:25:42,428 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [423 Valid, 1469 Invalid, 2279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 739 Invalid, 0 Unknown, 1540 Unchecked, 1.4s Time] [2025-03-04 09:25:42,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1435 states. [2025-03-04 09:25:42,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1435 to 1041. [2025-03-04 09:25:42,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1041 states, 520 states have (on average 2.1) internal successors, (1092), 1036 states have internal predecessors, (1092), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 09:25:42,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1041 states to 1041 states and 1098 transitions. [2025-03-04 09:25:42,493 INFO L78 Accepts]: Start accepts. Automaton has 1041 states and 1098 transitions. Word has length 4 [2025-03-04 09:25:42,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:25:42,493 INFO L471 AbstractCegarLoop]: Abstraction has 1041 states and 1098 transitions. [2025-03-04 09:25:42,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:25:42,493 INFO L276 IsEmpty]: Start isEmpty. Operand 1041 states and 1098 transitions. [2025-03-04 09:25:42,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-03-04 09:25:42,493 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:25:42,494 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-03-04 09:25:42,500 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-04 09:25:42,695 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 [2025-03-04 09:25:42,695 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr523REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-04 09:25:42,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:25:42,696 INFO L85 PathProgramCache]: Analyzing trace with hash 37401532, now seen corresponding path program 1 times [2025-03-04 09:25:42,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:25:42,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1066237166] [2025-03-04 09:25:42,696 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:25:42,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:25:42,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:25:42,698 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) [2025-03-04 09:25:42,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-04 09:25:42,784 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-04 09:25:42,787 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-04 09:25:42,787 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:25:42,787 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:25:42,788 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:25:42,789 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:25:42,797 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 [2025-03-04 09:25:42,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:25:42,804 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:25:42,804 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:25:42,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066237166] [2025-03-04 09:25:42,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066237166] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:25:42,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:25:42,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 09:25:42,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998360122] [2025-03-04 09:25:42,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:25:42,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:25:42,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:25:42,805 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:25:42,806 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:25:42,806 INFO L87 Difference]: Start difference. First operand 1041 states and 1098 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:25:43,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:25:43,777 INFO L93 Difference]: Finished difference Result 1216 states and 1283 transitions. [2025-03-04 09:25:43,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:25:43,778 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2025-03-04 09:25:43,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:25:43,781 INFO L225 Difference]: With dead ends: 1216 [2025-03-04 09:25:43,781 INFO L226 Difference]: Without dead ends: 1216 [2025-03-04 09:25:43,782 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:25:43,782 INFO L435 NwaCegarLoop]: 623 mSDtfsCounter, 962 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 965 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-03-04 09:25:43,782 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [965 Valid, 769 Invalid, 650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-03-04 09:25:43,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2025-03-04 09:25:43,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 1038. [2025-03-04 09:25:43,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1038 states, 528 states have (on average 2.0643939393939394) internal successors, (1090), 1033 states have internal predecessors, (1090), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 09:25:43,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1038 states to 1038 states and 1096 transitions. [2025-03-04 09:25:43,802 INFO L78 Accepts]: Start accepts. Automaton has 1038 states and 1096 transitions. Word has length 4 [2025-03-04 09:25:43,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:25:43,803 INFO L471 AbstractCegarLoop]: Abstraction has 1038 states and 1096 transitions. [2025-03-04 09:25:43,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:25:43,803 INFO L276 IsEmpty]: Start isEmpty. Operand 1038 states and 1096 transitions. [2025-03-04 09:25:43,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-03-04 09:25:43,803 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:25:43,803 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-03-04 09:25:43,809 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-04 09:25:44,008 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 [2025-03-04 09:25:44,008 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr524REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-04 09:25:44,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:25:44,008 INFO L85 PathProgramCache]: Analyzing trace with hash 37401533, now seen corresponding path program 1 times [2025-03-04 09:25:44,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:25:44,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1782837902] [2025-03-04 09:25:44,008 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:25:44,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:25:44,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:25:44,012 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) [2025-03-04 09:25:44,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-04 09:25:44,098 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-04 09:25:44,102 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-04 09:25:44,102 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:25:44,102 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:25:44,103 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 09:25:44,104 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:25:44,109 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 [2025-03-04 09:25:44,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:25:44,122 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:25:44,123 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:25:44,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782837902] [2025-03-04 09:25:44,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1782837902] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:25:44,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:25:44,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 09:25:44,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586890268] [2025-03-04 09:25:44,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:25:44,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:25:44,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:25:44,124 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:25:44,124 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:25:44,124 INFO L87 Difference]: Start difference. First operand 1038 states and 1096 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:25:45,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:25:45,983 INFO L93 Difference]: Finished difference Result 1446 states and 1536 transitions. [2025-03-04 09:25:45,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:25:45,983 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2025-03-04 09:25:45,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:25:45,987 INFO L225 Difference]: With dead ends: 1446 [2025-03-04 09:25:45,987 INFO L226 Difference]: Without dead ends: 1446 [2025-03-04 09:25:45,987 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:25:45,989 INFO L435 NwaCegarLoop]: 897 mSDtfsCounter, 440 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 700 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 1469 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-03-04 09:25:45,991 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [440 Valid, 1469 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 700 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-03-04 09:25:45,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2025-03-04 09:25:46,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 1161. [2025-03-04 09:25:46,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1161 states, 652 states have (on average 2.0199386503067487) internal successors, (1317), 1156 states have internal predecessors, (1317), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 09:25:46,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1161 states to 1161 states and 1323 transitions. [2025-03-04 09:25:46,009 INFO L78 Accepts]: Start accepts. Automaton has 1161 states and 1323 transitions. Word has length 4 [2025-03-04 09:25:46,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:25:46,010 INFO L471 AbstractCegarLoop]: Abstraction has 1161 states and 1323 transitions. [2025-03-04 09:25:46,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:25:46,010 INFO L276 IsEmpty]: Start isEmpty. Operand 1161 states and 1323 transitions. [2025-03-04 09:25:46,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-03-04 09:25:46,010 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:25:46,010 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:25:46,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-04 09:25:46,211 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 [2025-03-04 09:25:46,211 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr520REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-04 09:25:46,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:25:46,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1008455512, now seen corresponding path program 1 times [2025-03-04 09:25:46,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:25:46,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1157958516] [2025-03-04 09:25:46,212 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:25:46,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:25:46,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:25:46,215 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) [2025-03-04 09:25:46,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-04 09:25:46,297 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-04 09:25:46,305 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-04 09:25:46,305 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:25:46,305 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:25:46,306 INFO L256 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-04 09:25:46,308 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:25:46,315 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 [2025-03-04 09:25:46,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-04 09:25:46,377 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 [2025-03-04 09:25:46,389 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-04 09:25:46,389 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 [2025-03-04 09:25:46,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:25:46,405 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:25:46,405 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:25:46,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157958516] [2025-03-04 09:25:46,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1157958516] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:25:46,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:25:46,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:25:46,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806683947] [2025-03-04 09:25:46,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:25:46,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:25:46,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:25:46,406 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:25:46,406 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:25:46,406 INFO L87 Difference]: Start difference. First operand 1161 states and 1323 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) [2025-03-04 09:25:48,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:25:48,040 INFO L93 Difference]: Finished difference Result 1328 states and 1498 transitions. [2025-03-04 09:25:48,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:25:48,040 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 [2025-03-04 09:25:48,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:25:48,043 INFO L225 Difference]: With dead ends: 1328 [2025-03-04 09:25:48,043 INFO L226 Difference]: Without dead ends: 1328 [2025-03-04 09:25:48,044 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 [2025-03-04 09:25:48,044 INFO L435 NwaCegarLoop]: 358 mSDtfsCounter, 2198 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 941 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2201 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-03-04 09:25:48,044 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2201 Valid, 438 Invalid, 964 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 941 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-03-04 09:25:48,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1328 states. [2025-03-04 09:25:48,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1328 to 1026. [2025-03-04 09:25:48,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1026 states, 528 states have (on average 2.039772727272727) internal successors, (1077), 1021 states have internal predecessors, (1077), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 09:25:48,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1026 states to 1026 states and 1083 transitions. [2025-03-04 09:25:48,058 INFO L78 Accepts]: Start accepts. Automaton has 1026 states and 1083 transitions. Word has length 8 [2025-03-04 09:25:48,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:25:48,058 INFO L471 AbstractCegarLoop]: Abstraction has 1026 states and 1083 transitions. [2025-03-04 09:25:48,059 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) [2025-03-04 09:25:48,059 INFO L276 IsEmpty]: Start isEmpty. Operand 1026 states and 1083 transitions. [2025-03-04 09:25:48,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-03-04 09:25:48,059 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:25:48,059 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:25:48,067 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-04 09:25:48,259 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 [2025-03-04 09:25:48,260 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr517REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-04 09:25:48,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:25:48,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1197350901, now seen corresponding path program 1 times [2025-03-04 09:25:48,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:25:48,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1473031595] [2025-03-04 09:25:48,261 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:25:48,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:25:48,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:25:48,263 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) [2025-03-04 09:25:48,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-04 09:25:48,342 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-04 09:25:48,349 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-04 09:25:48,350 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:25:48,350 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:25:48,351 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:25:48,352 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:25:48,356 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 [2025-03-04 09:25:48,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:25:48,364 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:25:48,364 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:25:48,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473031595] [2025-03-04 09:25:48,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473031595] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:25:48,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:25:48,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 09:25:48,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245319476] [2025-03-04 09:25:48,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:25:48,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:25:48,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:25:48,365 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:25:48,366 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:25:48,366 INFO L87 Difference]: Start difference. First operand 1026 states and 1083 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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) [2025-03-04 09:25:49,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:25:49,517 INFO L93 Difference]: Finished difference Result 1189 states and 1267 transitions. [2025-03-04 09:25:49,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:25:49,517 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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 [2025-03-04 09:25:49,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:25:49,520 INFO L225 Difference]: With dead ends: 1189 [2025-03-04 09:25:49,520 INFO L226 Difference]: Without dead ends: 1189 [2025-03-04 09:25:49,520 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:25:49,521 INFO L435 NwaCegarLoop]: 857 mSDtfsCounter, 744 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 747 SdHoareTripleChecker+Valid, 1106 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-04 09:25:49,521 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [747 Valid, 1106 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 657 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-04 09:25:49,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1189 states. [2025-03-04 09:25:49,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1189 to 979. [2025-03-04 09:25:49,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 979 states, 528 states have (on average 1.9507575757575757) internal successors, (1030), 974 states have internal predecessors, (1030), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 09:25:49,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 979 states to 979 states and 1036 transitions. [2025-03-04 09:25:49,533 INFO L78 Accepts]: Start accepts. Automaton has 979 states and 1036 transitions. Word has length 9 [2025-03-04 09:25:49,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:25:49,534 INFO L471 AbstractCegarLoop]: Abstraction has 979 states and 1036 transitions. [2025-03-04 09:25:49,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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) [2025-03-04 09:25:49,534 INFO L276 IsEmpty]: Start isEmpty. Operand 979 states and 1036 transitions. [2025-03-04 09:25:49,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-03-04 09:25:49,534 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:25:49,534 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:25:49,542 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-04 09:25:49,735 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 [2025-03-04 09:25:49,735 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr518REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-04 09:25:49,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:25:49,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1197350902, now seen corresponding path program 1 times [2025-03-04 09:25:49,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:25:49,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1654838310] [2025-03-04 09:25:49,735 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:25:49,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:25:49,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:25:49,737 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) [2025-03-04 09:25:49,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-04 09:25:49,811 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-04 09:25:49,820 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-04 09:25:49,820 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:25:49,820 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:25:49,821 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 09:25:49,822 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:25:49,829 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 [2025-03-04 09:25:49,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:25:49,846 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:25:49,846 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:25:49,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654838310] [2025-03-04 09:25:49,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654838310] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:25:49,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:25:49,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 09:25:49,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520489908] [2025-03-04 09:25:49,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:25:49,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:25:49,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:25:49,847 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:25:49,847 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:25:49,847 INFO L87 Difference]: Start difference. First operand 979 states and 1036 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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) [2025-03-04 09:25:51,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:25:51,241 INFO L93 Difference]: Finished difference Result 1265 states and 1346 transitions. [2025-03-04 09:25:51,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:25:51,241 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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 [2025-03-04 09:25:51,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:25:51,245 INFO L225 Difference]: With dead ends: 1265 [2025-03-04 09:25:51,245 INFO L226 Difference]: Without dead ends: 1265 [2025-03-04 09:25:51,245 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:25:51,246 INFO L435 NwaCegarLoop]: 1035 mSDtfsCounter, 496 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 1451 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-04 09:25:51,247 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 1451 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 635 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-04 09:25:51,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1265 states. [2025-03-04 09:25:51,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1265 to 1006. [2025-03-04 09:25:51,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1006 states, 565 states have (on average 1.936283185840708) internal successors, (1094), 1001 states have internal predecessors, (1094), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 09:25:51,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1006 states to 1006 states and 1100 transitions. [2025-03-04 09:25:51,265 INFO L78 Accepts]: Start accepts. Automaton has 1006 states and 1100 transitions. Word has length 9 [2025-03-04 09:25:51,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:25:51,265 INFO L471 AbstractCegarLoop]: Abstraction has 1006 states and 1100 transitions. [2025-03-04 09:25:51,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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) [2025-03-04 09:25:51,266 INFO L276 IsEmpty]: Start isEmpty. Operand 1006 states and 1100 transitions. [2025-03-04 09:25:51,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-03-04 09:25:51,266 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:25:51,266 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:25:51,278 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-04 09:25:51,466 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 [2025-03-04 09:25:51,467 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr104REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-04 09:25:51,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:25:51,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1285481171, now seen corresponding path program 1 times [2025-03-04 09:25:51,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:25:51,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [283892010] [2025-03-04 09:25:51,467 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:25:51,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:25:51,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:25:51,469 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) [2025-03-04 09:25:51,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-04 09:25:51,549 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-04 09:25:51,559 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-04 09:25:51,559 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:25:51,559 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:25:51,561 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:25:51,562 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:25:51,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:25:51,613 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:25:51,613 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:25:51,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283892010] [2025-03-04 09:25:51,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283892010] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:25:51,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:25:51,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:25:51,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178982529] [2025-03-04 09:25:51,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:25:51,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:25:51,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:25:51,614 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:25:51,614 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:25:51,614 INFO L87 Difference]: Start difference. First operand 1006 states and 1100 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 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) [2025-03-04 09:25:51,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:25:51,766 INFO L93 Difference]: Finished difference Result 1440 states and 1589 transitions. [2025-03-04 09:25:51,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:25:51,768 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 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 [2025-03-04 09:25:51,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:25:51,771 INFO L225 Difference]: With dead ends: 1440 [2025-03-04 09:25:51,771 INFO L226 Difference]: Without dead ends: 1440 [2025-03-04 09:25:51,771 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:25:51,771 INFO L435 NwaCegarLoop]: 1086 mSDtfsCounter, 460 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 2019 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 09:25:51,772 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [460 Valid, 2019 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 09:25:51,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1440 states. [2025-03-04 09:25:51,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1440 to 1176. [2025-03-04 09:25:51,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1176 states, 735 states have (on average 1.8816326530612244) internal successors, (1383), 1171 states have internal predecessors, (1383), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 09:25:51,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1176 states to 1176 states and 1389 transitions. [2025-03-04 09:25:51,789 INFO L78 Accepts]: Start accepts. Automaton has 1176 states and 1389 transitions. Word has length 12 [2025-03-04 09:25:51,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:25:51,790 INFO L471 AbstractCegarLoop]: Abstraction has 1176 states and 1389 transitions. [2025-03-04 09:25:51,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 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) [2025-03-04 09:25:51,790 INFO L276 IsEmpty]: Start isEmpty. Operand 1176 states and 1389 transitions. [2025-03-04 09:25:51,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-03-04 09:25:51,790 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:25:51,790 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:25:51,797 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-04 09:25:51,991 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 [2025-03-04 09:25:51,991 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr193REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-04 09:25:51,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:25:51,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1202042993, now seen corresponding path program 1 times [2025-03-04 09:25:51,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:25:51,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [839375762] [2025-03-04 09:25:51,992 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:25:51,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:25:51,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:25:51,994 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) [2025-03-04 09:25:51,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-04 09:25:52,075 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-04 09:25:52,085 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-04 09:25:52,085 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:25:52,085 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:25:52,087 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:25:52,088 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:25:52,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:25:52,115 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:25:52,115 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:25:52,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839375762] [2025-03-04 09:25:52,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839375762] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:25:52,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:25:52,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:25:52,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2296662] [2025-03-04 09:25:52,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:25:52,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:25:52,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:25:52,116 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:25:52,116 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:25:52,116 INFO L87 Difference]: Start difference. First operand 1176 states and 1389 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) 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) [2025-03-04 09:25:53,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:25:53,555 INFO L93 Difference]: Finished difference Result 1339 states and 1538 transitions. [2025-03-04 09:25:53,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:25:53,556 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) 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 [2025-03-04 09:25:53,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:25:53,558 INFO L225 Difference]: With dead ends: 1339 [2025-03-04 09:25:53,558 INFO L226 Difference]: Without dead ends: 1339 [2025-03-04 09:25:53,559 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 [2025-03-04 09:25:53,559 INFO L435 NwaCegarLoop]: 581 mSDtfsCounter, 961 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 1014 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 964 SdHoareTripleChecker+Valid, 1207 SdHoareTripleChecker+Invalid, 1043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1014 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-04 09:25:53,559 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [964 Valid, 1207 Invalid, 1043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1014 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-04 09:25:53,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1339 states. [2025-03-04 09:25:53,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1339 to 1153. [2025-03-04 09:25:53,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1153 states, 735 states have (on average 1.819047619047619) internal successors, (1337), 1148 states have internal predecessors, (1337), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 09:25:53,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1343 transitions. [2025-03-04 09:25:53,573 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1343 transitions. Word has length 13 [2025-03-04 09:25:53,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:25:53,573 INFO L471 AbstractCegarLoop]: Abstraction has 1153 states and 1343 transitions. [2025-03-04 09:25:53,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) 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) [2025-03-04 09:25:53,573 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1343 transitions. [2025-03-04 09:25:53,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-03-04 09:25:53,574 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:25:53,574 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:25:53,580 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-04 09:25:53,774 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 [2025-03-04 09:25:53,774 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr194REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-04 09:25:53,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:25:53,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1202042994, now seen corresponding path program 1 times [2025-03-04 09:25:53,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:25:53,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1547352468] [2025-03-04 09:25:53,775 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:25:53,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:25:53,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:25:53,777 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) [2025-03-04 09:25:53,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-04 09:25:53,856 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-04 09:25:53,866 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-04 09:25:53,867 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:25:53,867 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:25:53,869 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-04 09:25:53,871 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:25:53,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-04 09:25:53,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:25:53,931 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:25:53,932 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:25:53,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547352468] [2025-03-04 09:25:53,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547352468] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:25:53,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:25:53,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:25:53,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642581493] [2025-03-04 09:25:53,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:25:53,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:25:53,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:25:53,933 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:25:53,933 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:25:53,934 INFO L87 Difference]: Start difference. First operand 1153 states and 1343 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) 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) [2025-03-04 09:25:55,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:25:55,674 INFO L93 Difference]: Finished difference Result 1428 states and 1633 transitions. [2025-03-04 09:25:55,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:25:55,675 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) 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 [2025-03-04 09:25:55,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:25:55,683 INFO L225 Difference]: With dead ends: 1428 [2025-03-04 09:25:55,683 INFO L226 Difference]: Without dead ends: 1428 [2025-03-04 09:25:55,683 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 [2025-03-04 09:25:55,684 INFO L435 NwaCegarLoop]: 876 mSDtfsCounter, 333 mSDsluCounter, 1005 mSDsCounter, 0 mSdLazyCounter, 1101 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 1881 SdHoareTripleChecker+Invalid, 1116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-03-04 09:25:55,684 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 1881 Invalid, 1116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1101 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-03-04 09:25:55,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1428 states. [2025-03-04 09:25:55,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1428 to 1217. [2025-03-04 09:25:55,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1217 states, 799 states have (on average 1.7709637046307884) internal successors, (1415), 1212 states have internal predecessors, (1415), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 09:25:55,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 1421 transitions. [2025-03-04 09:25:55,698 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 1421 transitions. Word has length 13 [2025-03-04 09:25:55,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:25:55,698 INFO L471 AbstractCegarLoop]: Abstraction has 1217 states and 1421 transitions. [2025-03-04 09:25:55,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) 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) [2025-03-04 09:25:55,698 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 1421 transitions. [2025-03-04 09:25:55,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-03-04 09:25:55,699 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:25:55,699 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:25:55,706 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-03-04 09:25:55,903 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 [2025-03-04 09:25:55,903 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr170REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-04 09:25:55,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:25:55,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1391417084, now seen corresponding path program 1 times [2025-03-04 09:25:55,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:25:55,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1706821379] [2025-03-04 09:25:55,904 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:25:55,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:25:55,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:25:55,906 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) [2025-03-04 09:25:55,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-04 09:25:55,983 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-04 09:25:55,994 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-04 09:25:55,994 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:25:55,994 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:25:55,996 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:25:55,997 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:25:56,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:25:56,010 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:25:56,010 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:25:56,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706821379] [2025-03-04 09:25:56,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1706821379] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:25:56,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:25:56,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:25:56,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440218646] [2025-03-04 09:25:56,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:25:56,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:25:56,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:25:56,011 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:25:56,011 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:25:56,011 INFO L87 Difference]: Start difference. First operand 1217 states and 1421 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2025-03-04 09:25:56,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:25:56,050 INFO L93 Difference]: Finished difference Result 1139 states and 1300 transitions. [2025-03-04 09:25:56,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 09:25:56,051 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), 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 14 [2025-03-04 09:25:56,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:25:56,053 INFO L225 Difference]: With dead ends: 1139 [2025-03-04 09:25:56,053 INFO L226 Difference]: Without dead ends: 1139 [2025-03-04 09:25:56,053 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:25:56,053 INFO L435 NwaCegarLoop]: 915 mSDtfsCounter, 45 mSDsluCounter, 1807 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 2722 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 [2025-03-04 09:25:56,054 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 2722 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 09:25:56,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2025-03-04 09:25:56,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1139. [2025-03-04 09:25:56,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 740 states have (on average 1.7486486486486486) internal successors, (1294), 1134 states have internal predecessors, (1294), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 09:25:56,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1300 transitions. [2025-03-04 09:25:56,065 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1300 transitions. Word has length 14 [2025-03-04 09:25:56,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:25:56,065 INFO L471 AbstractCegarLoop]: Abstraction has 1139 states and 1300 transitions. [2025-03-04 09:25:56,065 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), 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) [2025-03-04 09:25:56,065 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1300 transitions. [2025-03-04 09:25:56,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-03-04 09:25:56,066 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:25:56,066 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:25:56,073 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-03-04 09:25:56,266 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 [2025-03-04 09:25:56,266 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-04 09:25:56,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:25:56,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1603207986, now seen corresponding path program 1 times [2025-03-04 09:25:56,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:25:56,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1832753798] [2025-03-04 09:25:56,267 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:25:56,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:25:56,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:25:56,269 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) [2025-03-04 09:25:56,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-04 09:25:56,346 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-04 09:25:56,359 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-04 09:25:56,360 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:25:56,360 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:25:56,361 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-04 09:25:56,362 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:25:56,431 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#i~0#1.base_49| (_ BitVec 32))) (and (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_49| (_ bv0 1)) |c_#valid|) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_49|)))) is different from true [2025-03-04 09:25:56,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:25:56,431 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:25:56,431 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:25:56,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832753798] [2025-03-04 09:25:56,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1832753798] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:25:56,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:25:56,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:25:56,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164262561] [2025-03-04 09:25:56,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:25:56,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:25:56,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:25:56,432 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:25:56,432 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2025-03-04 09:25:56,432 INFO L87 Difference]: Start difference. First operand 1139 states and 1300 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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) [2025-03-04 09:25:57,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:25:57,320 INFO L93 Difference]: Finished difference Result 1324 states and 1492 transitions. [2025-03-04 09:25:57,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:25:57,321 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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 14 [2025-03-04 09:25:57,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:25:57,323 INFO L225 Difference]: With dead ends: 1324 [2025-03-04 09:25:57,323 INFO L226 Difference]: Without dead ends: 1323 [2025-03-04 09:25:57,324 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2025-03-04 09:25:57,324 INFO L435 NwaCegarLoop]: 837 mSDtfsCounter, 241 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 1350 SdHoareTripleChecker+Invalid, 1716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1188 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-03-04 09:25:57,324 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 1350 Invalid, 1716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 528 Invalid, 0 Unknown, 1188 Unchecked, 0.9s Time] [2025-03-04 09:25:57,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1323 states. [2025-03-04 09:25:57,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1323 to 1143. [2025-03-04 09:25:57,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1143 states, 744 states have (on average 1.7446236559139785) internal successors, (1298), 1138 states have internal predecessors, (1298), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 09:25:57,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 1304 transitions. [2025-03-04 09:25:57,335 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 1304 transitions. Word has length 14 [2025-03-04 09:25:57,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:25:57,335 INFO L471 AbstractCegarLoop]: Abstraction has 1143 states and 1304 transitions. [2025-03-04 09:25:57,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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) [2025-03-04 09:25:57,336 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 1304 transitions. [2025-03-04 09:25:57,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-03-04 09:25:57,336 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:25:57,336 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:25:57,345 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-03-04 09:25:57,536 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 [2025-03-04 09:25:57,537 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr102REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-04 09:25:57,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:25:57,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1840368562, now seen corresponding path program 1 times [2025-03-04 09:25:57,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:25:57,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [34662740] [2025-03-04 09:25:57,538 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:25:57,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:25:57,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:25:57,540 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) [2025-03-04 09:25:57,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-04 09:25:57,624 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-04 09:25:57,635 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-04 09:25:57,635 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:25:57,635 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:25:57,637 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-04 09:25:57,638 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:25:57,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:25:57,699 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:25:57,699 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:25:57,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34662740] [2025-03-04 09:25:57,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [34662740] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:25:57,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:25:57,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:25:57,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776768832] [2025-03-04 09:25:57,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:25:57,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:25:57,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:25:57,700 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:25:57,700 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:25:57,700 INFO L87 Difference]: Start difference. First operand 1143 states and 1304 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) [2025-03-04 09:25:58,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:25:58,081 INFO L93 Difference]: Finished difference Result 1367 states and 1505 transitions. [2025-03-04 09:25:58,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:25:58,081 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 15 [2025-03-04 09:25:58,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:25:58,088 INFO L225 Difference]: With dead ends: 1367 [2025-03-04 09:25:58,088 INFO L226 Difference]: Without dead ends: 1363 [2025-03-04 09:25:58,089 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:25:58,089 INFO L435 NwaCegarLoop]: 1008 mSDtfsCounter, 380 mSDsluCounter, 1753 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 2761 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-04 09:25:58,089 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 2761 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-04 09:25:58,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1363 states. [2025-03-04 09:25:58,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1363 to 1141. [2025-03-04 09:25:58,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1141 states, 742 states have (on average 1.7452830188679245) internal successors, (1295), 1136 states have internal predecessors, (1295), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 09:25:58,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1141 states to 1141 states and 1301 transitions. [2025-03-04 09:25:58,103 INFO L78 Accepts]: Start accepts. Automaton has 1141 states and 1301 transitions. Word has length 15 [2025-03-04 09:25:58,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:25:58,103 INFO L471 AbstractCegarLoop]: Abstraction has 1141 states and 1301 transitions. [2025-03-04 09:25:58,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) [2025-03-04 09:25:58,103 INFO L276 IsEmpty]: Start isEmpty. Operand 1141 states and 1301 transitions. [2025-03-04 09:25:58,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-03-04 09:25:58,106 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:25:58,106 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:25:58,113 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-03-04 09:25:58,306 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 [2025-03-04 09:25:58,307 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr509REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-04 09:25:58,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:25:58,308 INFO L85 PathProgramCache]: Analyzing trace with hash -972787444, now seen corresponding path program 1 times [2025-03-04 09:25:58,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:25:58,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [439626028] [2025-03-04 09:25:58,308 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:25:58,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:25:58,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:25:58,310 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) [2025-03-04 09:25:58,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-04 09:25:58,397 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-04 09:25:58,414 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-04 09:25:58,415 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:25:58,415 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:25:58,416 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 09:25:58,421 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:25:58,425 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 [2025-03-04 09:25:58,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:25:58,456 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:25:58,456 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:25:58,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439626028] [2025-03-04 09:25:58,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439626028] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:25:58,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:25:58,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:25:58,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437943893] [2025-03-04 09:25:58,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:25:58,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:25:58,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:25:58,457 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:25:58,457 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:25:58,457 INFO L87 Difference]: Start difference. First operand 1141 states and 1301 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) [2025-03-04 09:25:59,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:25:59,495 INFO L93 Difference]: Finished difference Result 1129 states and 1265 transitions. [2025-03-04 09:25:59,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:25:59,496 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 [2025-03-04 09:25:59,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:25:59,498 INFO L225 Difference]: With dead ends: 1129 [2025-03-04 09:25:59,498 INFO L226 Difference]: Without dead ends: 1129 [2025-03-04 09:25:59,498 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 [2025-03-04 09:25:59,499 INFO L435 NwaCegarLoop]: 624 mSDtfsCounter, 709 mSDsluCounter, 608 mSDsCounter, 0 mSdLazyCounter, 970 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 712 SdHoareTripleChecker+Valid, 1232 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-04 09:25:59,499 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [712 Valid, 1232 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 970 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-04 09:25:59,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1129 states. [2025-03-04 09:25:59,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1129 to 1118. [2025-03-04 09:25:59,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1118 states, 742 states have (on average 1.6832884097035041) internal successors, (1249), 1113 states have internal predecessors, (1249), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 09:25:59,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1118 states to 1118 states and 1255 transitions. [2025-03-04 09:25:59,508 INFO L78 Accepts]: Start accepts. Automaton has 1118 states and 1255 transitions. Word has length 18 [2025-03-04 09:25:59,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:25:59,508 INFO L471 AbstractCegarLoop]: Abstraction has 1118 states and 1255 transitions. [2025-03-04 09:25:59,508 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) [2025-03-04 09:25:59,508 INFO L276 IsEmpty]: Start isEmpty. Operand 1118 states and 1255 transitions. [2025-03-04 09:25:59,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-03-04 09:25:59,508 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:25:59,508 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:25:59,516 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-03-04 09:25:59,709 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 [2025-03-04 09:25:59,709 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr510REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-04 09:25:59,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:25:59,709 INFO L85 PathProgramCache]: Analyzing trace with hash -972787443, now seen corresponding path program 1 times [2025-03-04 09:25:59,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:25:59,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2076691095] [2025-03-04 09:25:59,710 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:25:59,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:25:59,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:25:59,712 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) [2025-03-04 09:25:59,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-04 09:25:59,796 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-04 09:25:59,818 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-04 09:25:59,818 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:25:59,818 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:25:59,821 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-04 09:25:59,823 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:25:59,832 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 [2025-03-04 09:25:59,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:25:59,884 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:25:59,884 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:25:59,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076691095] [2025-03-04 09:25:59,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076691095] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:25:59,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:25:59,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:25:59,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92193150] [2025-03-04 09:25:59,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:25:59,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:25:59,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:25:59,885 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:25:59,885 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:25:59,885 INFO L87 Difference]: Start difference. First operand 1118 states and 1255 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) [2025-03-04 09:26:01,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:26:01,415 INFO L93 Difference]: Finished difference Result 1497 states and 1647 transitions. [2025-03-04 09:26:01,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:26:01,415 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 [2025-03-04 09:26:01,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:26:01,418 INFO L225 Difference]: With dead ends: 1497 [2025-03-04 09:26:01,418 INFO L226 Difference]: Without dead ends: 1497 [2025-03-04 09:26:01,418 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 [2025-03-04 09:26:01,419 INFO L435 NwaCegarLoop]: 974 mSDtfsCounter, 534 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 1108 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 1949 SdHoareTripleChecker+Invalid, 1130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-03-04 09:26:01,419 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [534 Valid, 1949 Invalid, 1130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1108 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-03-04 09:26:01,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1497 states. [2025-03-04 09:26:01,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1497 to 1232. [2025-03-04 09:26:01,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1232 states, 856 states have (on average 1.6203271028037383) internal successors, (1387), 1227 states have internal predecessors, (1387), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 09:26:01,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1232 states to 1232 states and 1393 transitions. [2025-03-04 09:26:01,433 INFO L78 Accepts]: Start accepts. Automaton has 1232 states and 1393 transitions. Word has length 18 [2025-03-04 09:26:01,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:26:01,433 INFO L471 AbstractCegarLoop]: Abstraction has 1232 states and 1393 transitions. [2025-03-04 09:26:01,433 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) [2025-03-04 09:26:01,433 INFO L276 IsEmpty]: Start isEmpty. Operand 1232 states and 1393 transitions. [2025-03-04 09:26:01,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-03-04 09:26:01,434 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:26:01,434 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] [2025-03-04 09:26:01,442 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-03-04 09:26:01,635 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 [2025-03-04 09:26:01,635 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr510REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-04 09:26:01,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:26:01,635 INFO L85 PathProgramCache]: Analyzing trace with hash -707935181, now seen corresponding path program 1 times [2025-03-04 09:26:01,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:26:01,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [167351534] [2025-03-04 09:26:01,636 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:26:01,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:26:01,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:26:01,638 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) [2025-03-04 09:26:01,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-03-04 09:26:01,736 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-03-04 09:26:01,785 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-03-04 09:26:01,785 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:26:01,785 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:26:01,793 INFO L256 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-04 09:26:01,795 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:26:01,805 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 [2025-03-04 09:26:01,945 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:26:01,945 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:26:02,317 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:26:02,317 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:26:02,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167351534] [2025-03-04 09:26:02,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167351534] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 09:26:02,317 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 09:26:02,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2025-03-04 09:26:02,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117820267] [2025-03-04 09:26:02,317 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 09:26:02,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-04 09:26:02,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:26:02,318 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-04 09:26:02,318 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-04 09:26:02,318 INFO L87 Difference]: Start difference. First operand 1232 states and 1393 transitions. Second operand has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 8 states have internal predecessors, (69), 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) [2025-03-04 09:26:07,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:26:07,069 INFO L93 Difference]: Finished difference Result 1853 states and 2137 transitions. [2025-03-04 09:26:07,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-04 09:26:07,070 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 8 states have internal predecessors, (69), 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 [2025-03-04 09:26:07,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:26:07,073 INFO L225 Difference]: With dead ends: 1853 [2025-03-04 09:26:07,073 INFO L226 Difference]: Without dead ends: 1853 [2025-03-04 09:26:07,073 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2025-03-04 09:26:07,074 INFO L435 NwaCegarLoop]: 1001 mSDtfsCounter, 1295 mSDsluCounter, 2032 mSDsCounter, 0 mSdLazyCounter, 2118 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1296 SdHoareTripleChecker+Valid, 3033 SdHoareTripleChecker+Invalid, 2145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 2118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2025-03-04 09:26:07,074 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1296 Valid, 3033 Invalid, 2145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 2118 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2025-03-04 09:26:07,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1853 states. [2025-03-04 09:26:07,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1853 to 1396. [2025-03-04 09:26:07,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1396 states, 1020 states have (on average 1.5872549019607842) internal successors, (1619), 1391 states have internal predecessors, (1619), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 09:26:07,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1396 states to 1396 states and 1625 transitions. [2025-03-04 09:26:07,087 INFO L78 Accepts]: Start accepts. Automaton has 1396 states and 1625 transitions. Word has length 37 [2025-03-04 09:26:07,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:26:07,087 INFO L471 AbstractCegarLoop]: Abstraction has 1396 states and 1625 transitions. [2025-03-04 09:26:07,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 8 states have internal predecessors, (69), 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) [2025-03-04 09:26:07,087 INFO L276 IsEmpty]: Start isEmpty. Operand 1396 states and 1625 transitions. [2025-03-04 09:26:07,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2025-03-04 09:26:07,089 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:26:07,089 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] [2025-03-04 09:26:07,100 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-03-04 09:26:07,292 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 [2025-03-04 09:26:07,292 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr110ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-04 09:26:07,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:26:07,293 INFO L85 PathProgramCache]: Analyzing trace with hash -822847652, now seen corresponding path program 1 times [2025-03-04 09:26:07,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:26:07,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [38893504] [2025-03-04 09:26:07,294 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:26:07,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:26:07,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:26:07,296 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) [2025-03-04 09:26:07,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-03-04 09:26:07,387 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 48 statements into 1 equivalence classes. [2025-03-04 09:26:07,416 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 48 of 48 statements. [2025-03-04 09:26:07,416 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:26:07,417 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:26:07,420 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:26:07,421 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:26:07,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:26:07,448 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:26:07,448 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:26:07,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38893504] [2025-03-04 09:26:07,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38893504] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:26:07,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:26:07,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:26:07,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198483991] [2025-03-04 09:26:07,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:26:07,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:26:07,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:26:07,448 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:26:07,448 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:26:07,448 INFO L87 Difference]: Start difference. First operand 1396 states and 1625 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2025-03-04 09:26:07,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:26:07,488 INFO L93 Difference]: Finished difference Result 1378 states and 1595 transitions. [2025-03-04 09:26:07,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 09:26:07,489 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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 48 [2025-03-04 09:26:07,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:26:07,492 INFO L225 Difference]: With dead ends: 1378 [2025-03-04 09:26:07,492 INFO L226 Difference]: Without dead ends: 1378 [2025-03-04 09:26:07,492 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:26:07,493 INFO L435 NwaCegarLoop]: 894 mSDtfsCounter, 27 mSDsluCounter, 1751 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 2645 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 09:26:07,493 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 2645 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 09:26:07,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1378 states. [2025-03-04 09:26:07,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1378 to 1378. [2025-03-04 09:26:07,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1378 states, 1002 states have (on average 1.5858283433133733) internal successors, (1589), 1373 states have internal predecessors, (1589), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 09:26:07,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1378 states to 1378 states and 1595 transitions. [2025-03-04 09:26:07,504 INFO L78 Accepts]: Start accepts. Automaton has 1378 states and 1595 transitions. Word has length 48 [2025-03-04 09:26:07,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:26:07,504 INFO L471 AbstractCegarLoop]: Abstraction has 1378 states and 1595 transitions. [2025-03-04 09:26:07,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2025-03-04 09:26:07,504 INFO L276 IsEmpty]: Start isEmpty. Operand 1378 states and 1595 transitions. [2025-03-04 09:26:07,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2025-03-04 09:26:07,505 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:26:07,505 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:26:07,517 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-03-04 09:26:07,705 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 [2025-03-04 09:26:07,705 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr428REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-04 09:26:07,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:26:07,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1752552212, now seen corresponding path program 1 times [2025-03-04 09:26:07,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:26:07,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [143609322] [2025-03-04 09:26:07,706 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:26:07,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:26:07,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:26:07,708 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) [2025-03-04 09:26:07,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-03-04 09:26:07,815 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 52 statements into 1 equivalence classes. [2025-03-04 09:26:07,868 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 52 of 52 statements. [2025-03-04 09:26:07,868 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:26:07,869 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:26:07,876 INFO L256 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:26:07,877 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:26:07,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:26:07,903 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:26:07,903 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:26:07,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143609322] [2025-03-04 09:26:07,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143609322] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:26:07,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:26:07,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:26:07,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925682854] [2025-03-04 09:26:07,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:26:07,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:26:07,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:26:07,903 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:26:07,903 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:26:07,904 INFO L87 Difference]: Start difference. First operand 1378 states and 1595 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:26:07,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:26:07,962 INFO L93 Difference]: Finished difference Result 1067 states and 1159 transitions. [2025-03-04 09:26:07,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 09:26:07,965 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2025-03-04 09:26:07,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:26:07,968 INFO L225 Difference]: With dead ends: 1067 [2025-03-04 09:26:07,968 INFO L226 Difference]: Without dead ends: 1067 [2025-03-04 09:26:07,968 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:26:07,968 INFO L435 NwaCegarLoop]: 848 mSDtfsCounter, 56 mSDsluCounter, 1623 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 2471 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 09:26:07,968 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 2471 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 09:26:07,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1067 states. [2025-03-04 09:26:07,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1067 to 1065. [2025-03-04 09:26:07,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1065 states, 712 states have (on average 1.6165730337078652) internal successors, (1151), 1060 states have internal predecessors, (1151), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 09:26:07,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1157 transitions. [2025-03-04 09:26:07,979 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1157 transitions. Word has length 52 [2025-03-04 09:26:07,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:26:07,979 INFO L471 AbstractCegarLoop]: Abstraction has 1065 states and 1157 transitions. [2025-03-04 09:26:07,980 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), 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) [2025-03-04 09:26:07,980 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1157 transitions. [2025-03-04 09:26:07,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2025-03-04 09:26:07,980 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:26:07,980 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] [2025-03-04 09:26:07,990 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-03-04 09:26:08,181 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 [2025-03-04 09:26:08,181 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr110ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-04 09:26:08,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:26:08,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1169743652, now seen corresponding path program 1 times [2025-03-04 09:26:08,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:26:08,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1729151061] [2025-03-04 09:26:08,182 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:26:08,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:26:08,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:26:08,183 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) [2025-03-04 09:26:08,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-03-04 09:26:08,289 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-03-04 09:26:08,322 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-03-04 09:26:08,322 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:26:08,322 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:26:08,327 INFO L256 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-04 09:26:08,328 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:26:08,337 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-04 09:26:08,337 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-04 09:26:08,337 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-04 09:26:08,339 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 [2025-03-04 09:26:08,377 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-04 09:26:08,378 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 [2025-03-04 09:26:08,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:26:08,408 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:26:08,408 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:26:08,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729151061] [2025-03-04 09:26:08,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729151061] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:26:08,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:26:08,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-04 09:26:08,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36795627] [2025-03-04 09:26:08,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:26:08,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 09:26:08,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:26:08,408 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 09:26:08,409 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-03-04 09:26:08,409 INFO L87 Difference]: Start difference. First operand 1065 states and 1157 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:26:08,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:26:08,626 INFO L93 Difference]: Finished difference Result 1536 states and 1649 transitions. [2025-03-04 09:26:08,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 09:26:08,626 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2025-03-04 09:26:08,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:26:08,629 INFO L225 Difference]: With dead ends: 1536 [2025-03-04 09:26:08,629 INFO L226 Difference]: Without dead ends: 1533 [2025-03-04 09:26:08,630 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-03-04 09:26:08,630 INFO L435 NwaCegarLoop]: 1056 mSDtfsCounter, 1227 mSDsluCounter, 3153 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1233 SdHoareTripleChecker+Valid, 4209 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-04 09:26:08,630 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1233 Valid, 4209 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-04 09:26:08,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1533 states. [2025-03-04 09:26:08,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1533 to 1013. [2025-03-04 09:26:08,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1013 states, 660 states have (on average 1.662121212121212) internal successors, (1097), 1008 states have internal predecessors, (1097), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 09:26:08,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 1103 transitions. [2025-03-04 09:26:08,639 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 1103 transitions. Word has length 56 [2025-03-04 09:26:08,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:26:08,639 INFO L471 AbstractCegarLoop]: Abstraction has 1013 states and 1103 transitions. [2025-03-04 09:26:08,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:26:08,640 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 1103 transitions. [2025-03-04 09:26:08,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2025-03-04 09:26:08,640 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:26:08,640 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:26:08,648 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-03-04 09:26:08,840 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 [2025-03-04 09:26:08,840 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr428REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-04 09:26:08,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:26:08,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1664732852, now seen corresponding path program 1 times [2025-03-04 09:26:08,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:26:08,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1295061478] [2025-03-04 09:26:08,841 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:26:08,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:26:08,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:26:08,843 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) [2025-03-04 09:26:08,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-03-04 09:26:08,943 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 60 statements into 1 equivalence classes. [2025-03-04 09:26:09,006 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 60 of 60 statements. [2025-03-04 09:26:09,006 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:26:09,006 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:26:09,014 INFO L256 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-04 09:26:09,015 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:26:09,025 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 [2025-03-04 09:26:09,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-04 09:26:09,339 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 [2025-03-04 09:26:09,348 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-04 09:26:09,348 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 [2025-03-04 09:26:09,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:26:09,349 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:26:09,350 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:26:09,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295061478] [2025-03-04 09:26:09,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1295061478] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:26:09,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:26:09,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:26:09,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941132602] [2025-03-04 09:26:09,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:26:09,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 09:26:09,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:26:09,350 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 09:26:09,350 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:26:09,350 INFO L87 Difference]: Start difference. First operand 1013 states and 1103 transitions. Second operand has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:26:10,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:26:10,556 INFO L93 Difference]: Finished difference Result 975 states and 1065 transitions. [2025-03-04 09:26:10,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 09:26:10,558 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2025-03-04 09:26:10,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:26:10,559 INFO L225 Difference]: With dead ends: 975 [2025-03-04 09:26:10,559 INFO L226 Difference]: Without dead ends: 975 [2025-03-04 09:26:10,560 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2025-03-04 09:26:10,560 INFO L435 NwaCegarLoop]: 442 mSDtfsCounter, 1139 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 879 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1142 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-04 09:26:10,560 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1142 Valid, 726 Invalid, 926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 879 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-04 09:26:10,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2025-03-04 09:26:10,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 938. [2025-03-04 09:26:10,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 938 states, 623 states have (on average 1.581059390048154) internal successors, (985), 933 states have internal predecessors, (985), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 09:26:10,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 938 states to 938 states and 991 transitions. [2025-03-04 09:26:10,567 INFO L78 Accepts]: Start accepts. Automaton has 938 states and 991 transitions. Word has length 60 [2025-03-04 09:26:10,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:26:10,567 INFO L471 AbstractCegarLoop]: Abstraction has 938 states and 991 transitions. [2025-03-04 09:26:10,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:26:10,567 INFO L276 IsEmpty]: Start isEmpty. Operand 938 states and 991 transitions. [2025-03-04 09:26:10,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-03-04 09:26:10,568 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:26:10,568 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:26:10,577 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-03-04 09:26:10,768 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 [2025-03-04 09:26:10,768 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr421REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-04 09:26:10,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:26:10,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1066944605, now seen corresponding path program 1 times [2025-03-04 09:26:10,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:26:10,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [464650613] [2025-03-04 09:26:10,769 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:26:10,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:26:10,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:26:10,771 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) [2025-03-04 09:26:10,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-03-04 09:26:10,875 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-03-04 09:26:10,926 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-03-04 09:26:10,926 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:26:10,926 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:26:10,935 INFO L256 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-04 09:26:10,940 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:26:10,945 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 [2025-03-04 09:26:10,958 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 [2025-03-04 09:26:10,981 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 [2025-03-04 09:26:10,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:26:10,991 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:26:10,992 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:26:10,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464650613] [2025-03-04 09:26:10,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464650613] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:26:10,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:26:10,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:26:10,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410584140] [2025-03-04 09:26:10,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:26:10,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 09:26:10,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:26:10,992 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 09:26:10,992 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:26:10,993 INFO L87 Difference]: Start difference. First operand 938 states and 991 transitions. Second operand has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 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) [2025-03-04 09:26:12,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:26:12,391 INFO L93 Difference]: Finished difference Result 937 states and 990 transitions. [2025-03-04 09:26:12,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 09:26:12,391 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 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 65 [2025-03-04 09:26:12,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:26:12,393 INFO L225 Difference]: With dead ends: 937 [2025-03-04 09:26:12,393 INFO L226 Difference]: Without dead ends: 937 [2025-03-04 09:26:12,394 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-04 09:26:12,394 INFO L435 NwaCegarLoop]: 820 mSDtfsCounter, 2 mSDsluCounter, 1296 mSDsCounter, 0 mSdLazyCounter, 1171 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2116 SdHoareTripleChecker+Invalid, 1172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-04 09:26:12,394 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2116 Invalid, 1172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1171 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-04 09:26:12,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2025-03-04 09:26:12,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 937. [2025-03-04 09:26:12,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 937 states, 623 states have (on average 1.579454253611557) internal successors, (984), 932 states have internal predecessors, (984), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 09:26:12,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 990 transitions. [2025-03-04 09:26:12,409 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 990 transitions. Word has length 65 [2025-03-04 09:26:12,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:26:12,410 INFO L471 AbstractCegarLoop]: Abstraction has 937 states and 990 transitions. [2025-03-04 09:26:12,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 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) [2025-03-04 09:26:12,410 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 990 transitions. [2025-03-04 09:26:12,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-03-04 09:26:12,410 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:26:12,410 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:26:12,425 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-03-04 09:26:12,611 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 [2025-03-04 09:26:12,611 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr422REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-04 09:26:12,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:26:12,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1066944604, now seen corresponding path program 1 times [2025-03-04 09:26:12,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:26:12,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [30775071] [2025-03-04 09:26:12,612 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:26:12,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:26:12,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:26:12,614 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) [2025-03-04 09:26:12,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-03-04 09:26:12,747 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-03-04 09:26:12,813 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-03-04 09:26:12,813 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:26:12,813 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:26:12,823 INFO L256 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-04 09:26:12,825 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:26:12,833 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 [2025-03-04 09:26:12,845 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 [2025-03-04 09:26:12,853 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 [2025-03-04 09:26:12,881 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 [2025-03-04 09:26:12,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:26:12,893 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:26:12,894 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:26:12,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30775071] [2025-03-04 09:26:12,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30775071] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:26:12,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:26:12,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:26:12,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746297124] [2025-03-04 09:26:12,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:26:12,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 09:26:12,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:26:12,894 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 09:26:12,894 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:26:12,894 INFO L87 Difference]: Start difference. First operand 937 states and 990 transitions. Second operand has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 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) [2025-03-04 09:26:14,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:26:14,716 INFO L93 Difference]: Finished difference Result 936 states and 989 transitions. [2025-03-04 09:26:14,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 09:26:14,716 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 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 65 [2025-03-04 09:26:14,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:26:14,719 INFO L225 Difference]: With dead ends: 936 [2025-03-04 09:26:14,719 INFO L226 Difference]: Without dead ends: 936 [2025-03-04 09:26:14,719 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-04 09:26:14,720 INFO L435 NwaCegarLoop]: 820 mSDtfsCounter, 1 mSDsluCounter, 1316 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2136 SdHoareTripleChecker+Invalid, 1149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-03-04 09:26:14,720 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2136 Invalid, 1149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1148 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-03-04 09:26:14,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 936 states. [2025-03-04 09:26:14,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 936 to 936. [2025-03-04 09:26:14,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 936 states, 622 states have (on average 1.5803858520900322) internal successors, (983), 931 states have internal predecessors, (983), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 09:26:14,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 936 states to 936 states and 989 transitions. [2025-03-04 09:26:14,737 INFO L78 Accepts]: Start accepts. Automaton has 936 states and 989 transitions. Word has length 65 [2025-03-04 09:26:14,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:26:14,737 INFO L471 AbstractCegarLoop]: Abstraction has 936 states and 989 transitions. [2025-03-04 09:26:14,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 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) [2025-03-04 09:26:14,737 INFO L276 IsEmpty]: Start isEmpty. Operand 936 states and 989 transitions. [2025-03-04 09:26:14,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2025-03-04 09:26:14,738 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:26:14,738 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] [2025-03-04 09:26:14,753 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-03-04 09:26:14,938 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 [2025-03-04 09:26:14,939 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr417REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-04 09:26:14,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:26:14,939 INFO L85 PathProgramCache]: Analyzing trace with hash -676132640, now seen corresponding path program 1 times [2025-03-04 09:26:14,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:26:14,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2091971558] [2025-03-04 09:26:14,940 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:26:14,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:26:14,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:26:14,941 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:26:14,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-03-04 09:26:15,078 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 73 statements into 1 equivalence classes. [2025-03-04 09:26:15,138 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 73 of 73 statements. [2025-03-04 09:26:15,138 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:26:15,138 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:26:15,150 INFO L256 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-04 09:26:15,152 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:26:15,156 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 [2025-03-04 09:26:15,205 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 [2025-03-04 09:26:15,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:26:15,215 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:26:15,215 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:26:15,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091971558] [2025-03-04 09:26:15,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091971558] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:26:15,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:26:15,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-04 09:26:15,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814967968] [2025-03-04 09:26:15,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:26:15,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-04 09:26:15,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:26:15,217 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-04 09:26:15,217 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-04 09:26:15,217 INFO L87 Difference]: Start difference. First operand 936 states and 989 transitions. Second operand has 7 states, 5 states have (on average 14.2) internal successors, (71), 6 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 09:26:16,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:26:16,611 INFO L93 Difference]: Finished difference Result 948 states and 1004 transitions. [2025-03-04 09:26:16,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-04 09:26:16,611 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 14.2) internal successors, (71), 6 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 73 [2025-03-04 09:26:16,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:26:16,614 INFO L225 Difference]: With dead ends: 948 [2025-03-04 09:26:16,615 INFO L226 Difference]: Without dead ends: 948 [2025-03-04 09:26:16,615 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2025-03-04 09:26:16,616 INFO L435 NwaCegarLoop]: 812 mSDtfsCounter, 6 mSDsluCounter, 2165 mSDsCounter, 0 mSdLazyCounter, 1135 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2977 SdHoareTripleChecker+Invalid, 1139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-04 09:26:16,616 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2977 Invalid, 1139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1135 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-04 09:26:16,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 948 states. [2025-03-04 09:26:16,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 948 to 942. [2025-03-04 09:26:16,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 942 states, 627 states have (on average 1.5789473684210527) internal successors, (990), 936 states have internal predecessors, (990), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2025-03-04 09:26:16,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 999 transitions. [2025-03-04 09:26:16,628 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 999 transitions. Word has length 73 [2025-03-04 09:26:16,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:26:16,628 INFO L471 AbstractCegarLoop]: Abstraction has 942 states and 999 transitions. [2025-03-04 09:26:16,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 14.2) internal successors, (71), 6 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 09:26:16,628 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 999 transitions. [2025-03-04 09:26:16,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2025-03-04 09:26:16,629 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:26:16,629 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] [2025-03-04 09:26:16,640 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2025-03-04 09:26:16,829 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 [2025-03-04 09:26:16,829 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr418REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-04 09:26:16,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:26:16,829 INFO L85 PathProgramCache]: Analyzing trace with hash -676132639, now seen corresponding path program 1 times [2025-03-04 09:26:16,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:26:16,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1396334872] [2025-03-04 09:26:16,830 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:26:16,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:26:16,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:26:16,832 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) [2025-03-04 09:26:16,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-03-04 09:26:16,967 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 73 statements into 1 equivalence classes. [2025-03-04 09:26:17,030 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 73 of 73 statements. [2025-03-04 09:26:17,030 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:26:17,031 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:26:17,041 INFO L256 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:26:17,042 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:26:17,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:26:17,053 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:26:17,053 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:26:17,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396334872] [2025-03-04 09:26:17,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1396334872] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:26:17,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:26:17,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:26:17,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372408339] [2025-03-04 09:26:17,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:26:17,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:26:17,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:26:17,054 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:26:17,054 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:26:17,054 INFO L87 Difference]: Start difference. First operand 942 states and 999 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 09:26:17,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:26:17,085 INFO L93 Difference]: Finished difference Result 939 states and 993 transitions. [2025-03-04 09:26:17,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:26:17,085 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 73 [2025-03-04 09:26:17,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:26:17,091 INFO L225 Difference]: With dead ends: 939 [2025-03-04 09:26:17,091 INFO L226 Difference]: Without dead ends: 939 [2025-03-04 09:26:17,091 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:26:17,091 INFO L435 NwaCegarLoop]: 820 mSDtfsCounter, 0 mSDsluCounter, 1635 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2455 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 09:26:17,091 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2455 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 09:26:17,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2025-03-04 09:26:17,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 939. [2025-03-04 09:26:17,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 939 states, 624 states have (on average 1.580128205128205) internal successors, (986), 934 states have internal predecessors, (986), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-03-04 09:26:17,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 939 states to 939 states and 993 transitions. [2025-03-04 09:26:17,102 INFO L78 Accepts]: Start accepts. Automaton has 939 states and 993 transitions. Word has length 73 [2025-03-04 09:26:17,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:26:17,102 INFO L471 AbstractCegarLoop]: Abstraction has 939 states and 993 transitions. [2025-03-04 09:26:17,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 09:26:17,102 INFO L276 IsEmpty]: Start isEmpty. Operand 939 states and 993 transitions. [2025-03-04 09:26:17,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2025-03-04 09:26:17,103 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:26:17,103 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] [2025-03-04 09:26:17,113 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2025-03-04 09:26:17,303 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 [2025-03-04 09:26:17,303 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr417REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-04 09:26:17,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:26:17,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1538854490, now seen corresponding path program 1 times [2025-03-04 09:26:17,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:26:17,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1165611151] [2025-03-04 09:26:17,304 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:26:17,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:26:17,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:26:17,306 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) [2025-03-04 09:26:17,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-03-04 09:26:17,421 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 74 statements into 1 equivalence classes. [2025-03-04 09:26:17,477 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 74 of 74 statements. [2025-03-04 09:26:17,478 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:26:17,478 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:26:17,486 INFO L256 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 09:26:17,487 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:26:17,514 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:26:17,515 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:26:17,564 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:26:17,564 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:26:17,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165611151] [2025-03-04 09:26:17,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165611151] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 09:26:17,564 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 09:26:17,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2025-03-04 09:26:17,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336101727] [2025-03-04 09:26:17,564 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 09:26:17,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-04 09:26:17,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:26:17,565 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-04 09:26:17,565 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-03-04 09:26:17,565 INFO L87 Difference]: Start difference. First operand 939 states and 993 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-04 09:26:17,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:26:17,668 INFO L93 Difference]: Finished difference Result 951 states and 1010 transitions. [2025-03-04 09:26:17,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-04 09:26:17,669 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 74 [2025-03-04 09:26:17,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:26:17,670 INFO L225 Difference]: With dead ends: 951 [2025-03-04 09:26:17,670 INFO L226 Difference]: Without dead ends: 951 [2025-03-04 09:26:17,671 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2025-03-04 09:26:17,671 INFO L435 NwaCegarLoop]: 820 mSDtfsCounter, 5 mSDsluCounter, 4080 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 4900 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 09:26:17,671 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 4900 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 09:26:17,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 951 states. [2025-03-04 09:26:17,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 951 to 949. [2025-03-04 09:26:17,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 949 states, 633 states have (on average 1.5813586097946288) internal successors, (1001), 943 states have internal predecessors, (1001), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-03-04 09:26:17,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1008 transitions. [2025-03-04 09:26:17,687 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1008 transitions. Word has length 74 [2025-03-04 09:26:17,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:26:17,687 INFO L471 AbstractCegarLoop]: Abstraction has 949 states and 1008 transitions. [2025-03-04 09:26:17,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-04 09:26:17,688 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1008 transitions. [2025-03-04 09:26:17,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2025-03-04 09:26:17,688 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:26:17,688 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] [2025-03-04 09:26:17,698 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2025-03-04 09:26:17,888 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 [2025-03-04 09:26:17,889 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr417REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-04 09:26:17,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:26:17,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1372195424, now seen corresponding path program 2 times [2025-03-04 09:26:17,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:26:17,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [475598362] [2025-03-04 09:26:17,890 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 09:26:17,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:26:17,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:26:17,891 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) [2025-03-04 09:26:17,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-03-04 09:26:18,019 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 77 statements into 2 equivalence classes. [2025-03-04 09:26:30,943 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 77 of 77 statements. [2025-03-04 09:26:30,943 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 09:26:30,943 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:26:30,959 INFO L256 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-03-04 09:26:30,961 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:26:31,025 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-04 09:26:31,025 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 [2025-03-04 09:26:31,039 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-04 09:26:31,148 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:26:31,148 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2025-03-04 09:26:31,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2025-03-04 09:26:31,190 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-04 09:26:31,190 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:26:31,243 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2025-03-04 09:26:31,243 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2025-03-04 09:26:31,275 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:26:31,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475598362] [2025-03-04 09:26:31,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [475598362] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 09:26:31,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1895399738] [2025-03-04 09:26:31,275 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 09:26:31,275 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-03-04 09:26:31,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2025-03-04 09:26:31,287 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-03-04 09:26:31,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2025-03-04 09:26:31,511 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 77 statements into 2 equivalence classes. [2025-03-04 09:26:32,263 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 77 of 77 statements. [2025-03-04 09:26:32,264 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 09:26:32,264 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:26:32,287 INFO L256 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-04 09:26:32,289 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:26:32,370 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:26:32,370 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:26:32,529 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:26:32,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1895399738] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 09:26:32,529 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 09:26:32,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 24 [2025-03-04 09:26:32,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550804208] [2025-03-04 09:26:32,529 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 09:26:32,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-04 09:26:32,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:26:32,530 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-04 09:26:32,530 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=552, Unknown=7, NotChecked=0, Total=650 [2025-03-04 09:26:32,531 INFO L87 Difference]: Start difference. First operand 949 states and 1008 transitions. Second operand has 24 states, 23 states have (on average 6.086956521739131) internal successors, (140), 23 states have internal predecessors, (140), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-04 09:26:37,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:26:37,832 INFO L93 Difference]: Finished difference Result 965 states and 1031 transitions. [2025-03-04 09:26:37,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-03-04 09:26:37,833 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 6.086956521739131) internal successors, (140), 23 states have internal predecessors, (140), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 77 [2025-03-04 09:26:37,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:26:37,835 INFO L225 Difference]: With dead ends: 965 [2025-03-04 09:26:37,835 INFO L226 Difference]: Without dead ends: 961 [2025-03-04 09:26:37,836 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 486 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=416, Invalid=2331, Unknown=9, NotChecked=0, Total=2756 [2025-03-04 09:26:37,836 INFO L435 NwaCegarLoop]: 542 mSDtfsCounter, 609 mSDsluCounter, 8224 mSDsCounter, 0 mSdLazyCounter, 5661 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 613 SdHoareTripleChecker+Valid, 8766 SdHoareTripleChecker+Invalid, 5678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 5661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2025-03-04 09:26:37,836 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [613 Valid, 8766 Invalid, 5678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 5661 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2025-03-04 09:26:37,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2025-03-04 09:26:37,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 957. [2025-03-04 09:26:37,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 957 states, 642 states have (on average 1.5763239875389408) internal successors, (1012), 951 states have internal predecessors, (1012), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-03-04 09:26:37,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 1019 transitions. [2025-03-04 09:26:37,845 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 1019 transitions. Word has length 77 [2025-03-04 09:26:37,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:26:37,845 INFO L471 AbstractCegarLoop]: Abstraction has 957 states and 1019 transitions. [2025-03-04 09:26:37,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 6.086956521739131) internal successors, (140), 23 states have internal predecessors, (140), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-04 09:26:37,845 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 1019 transitions. [2025-03-04 09:26:37,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2025-03-04 09:26:37,845 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:26:37,845 INFO L218 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:26:37,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2025-03-04 09:26:38,054 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (27)] Ended with exit code 0 [2025-03-04 09:26:38,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2025-03-04 09:26:38,246 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr418REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-04 09:26:38,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:26:38,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1622975649, now seen corresponding path program 1 times [2025-03-04 09:26:38,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:26:38,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [35422908] [2025-03-04 09:26:38,255 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:26:38,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:26:38,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:26:38,256 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:26:38,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2025-03-04 09:26:38,400 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-03-04 09:26:38,475 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-03-04 09:26:38,475 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:26:38,475 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:26:38,485 INFO L256 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-04 09:26:38,487 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:26:38,582 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:26:38,582 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:26:38,934 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:26:38,934 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:26:38,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35422908] [2025-03-04 09:26:38,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35422908] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 09:26:38,934 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 09:26:38,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2025-03-04 09:26:38,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562833583] [2025-03-04 09:26:38,935 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 09:26:38,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-03-04 09:26:38,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:26:38,935 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-03-04 09:26:38,935 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2025-03-04 09:26:38,936 INFO L87 Difference]: Start difference. First operand 957 states and 1019 transitions. Second operand has 26 states, 26 states have (on average 3.6153846153846154) internal successors, (94), 26 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-04 09:26:39,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:26:39,925 INFO L93 Difference]: Finished difference Result 981 states and 1058 transitions. [2025-03-04 09:26:39,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-03-04 09:26:39,925 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.6153846153846154) internal successors, (94), 26 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 83 [2025-03-04 09:26:39,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:26:39,927 INFO L225 Difference]: With dead ends: 981 [2025-03-04 09:26:39,927 INFO L226 Difference]: Without dead ends: 975 [2025-03-04 09:26:39,927 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=728, Invalid=1434, Unknown=0, NotChecked=0, Total=2162 [2025-03-04 09:26:39,928 INFO L435 NwaCegarLoop]: 820 mSDtfsCounter, 15 mSDsluCounter, 10616 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 11436 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-04 09:26:39,928 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 11436 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-04 09:26:39,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2025-03-04 09:26:39,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 975. [2025-03-04 09:26:39,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 975 states, 660 states have (on average 1.5681818181818181) internal successors, (1035), 969 states have internal predecessors, (1035), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-03-04 09:26:39,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 1042 transitions. [2025-03-04 09:26:39,936 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 1042 transitions. Word has length 83 [2025-03-04 09:26:39,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:26:39,936 INFO L471 AbstractCegarLoop]: Abstraction has 975 states and 1042 transitions. [2025-03-04 09:26:39,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.6153846153846154) internal successors, (94), 26 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-04 09:26:39,936 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 1042 transitions. [2025-03-04 09:26:39,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2025-03-04 09:26:39,937 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:26:39,937 INFO L218 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:26:39,948 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2025-03-04 09:26:40,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:26:40,138 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr418REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-04 09:26:40,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:26:40,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1375717665, now seen corresponding path program 2 times [2025-03-04 09:26:40,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:26:40,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1317103477] [2025-03-04 09:26:40,139 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 09:26:40,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:26:40,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:26:40,140 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:26:40,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2025-03-04 09:26:40,314 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 95 statements into 2 equivalence classes. [2025-03-04 09:26:51,937 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 95 of 95 statements. [2025-03-04 09:26:51,937 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 09:26:51,937 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:26:51,958 INFO L256 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 64 conjuncts are in the unsatisfiable core [2025-03-04 09:26:51,965 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:26:52,024 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 [2025-03-04 09:26:52,033 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-04 09:26:52,033 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 [2025-03-04 09:26:52,052 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 [2025-03-04 09:26:52,059 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-04 09:26:52,127 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2025-03-04 09:26:52,131 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2025-03-04 09:26:52,428 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:26:52,429 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2025-03-04 09:26:52,434 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2025-03-04 09:26:52,464 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2025-03-04 09:26:52,467 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2025-03-04 09:26:52,481 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2025-03-04 09:26:52,481 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:26:52,888 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:26:52,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317103477] [2025-03-04 09:26:52,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317103477] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 09:26:52,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1384020578] [2025-03-04 09:26:52,889 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 09:26:52,889 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-03-04 09:26:52,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2025-03-04 09:26:52,890 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-03-04 09:26:52,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2025-03-04 09:26:53,126 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 95 statements into 2 equivalence classes. [2025-03-04 09:26:54,005 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 95 of 95 statements. [2025-03-04 09:26:54,005 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 09:26:54,005 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:26:54,035 INFO L256 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-03-04 09:26:54,037 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:26:54,618 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:26:54,618 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:26:55,944 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:26:55,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1384020578] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 09:26:55,944 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 09:26:55,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 26, 26] total 58 [2025-03-04 09:26:55,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365325106] [2025-03-04 09:26:55,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 09:26:55,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2025-03-04 09:26:55,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:26:55,945 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2025-03-04 09:26:55,946 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=700, Invalid=2952, Unknown=8, NotChecked=0, Total=3660 [2025-03-04 09:26:55,947 INFO L87 Difference]: Start difference. First operand 975 states and 1042 transitions. Second operand has 58 states, 57 states have (on average 3.087719298245614) internal successors, (176), 58 states have internal predecessors, (176), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)