./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test3-1.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_SFH_nondet_test3-1.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 6fd297418200393a9bb890e84311a80b6eacd7d5d7cdd65efb1397f8b8ab870f --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 09:37:07,474 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 09:37:07,536 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-04 09:37:07,539 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 09:37:07,540 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 09:37:07,569 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 09:37:07,570 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 09:37:07,570 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 09:37:07,570 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 09:37:07,570 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 09:37:07,570 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 09:37:07,571 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 09:37:07,571 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 09:37:07,571 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 09:37:07,571 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 09:37:07,572 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 09:37:07,572 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 09:37:07,572 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 09:37:07,572 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 09:37:07,572 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 09:37:07,572 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-04 09:37:07,572 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-04 09:37:07,572 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-04 09:37:07,572 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 09:37:07,572 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-04 09:37:07,572 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 09:37:07,572 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 09:37:07,572 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 09:37:07,572 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 09:37:07,572 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 09:37:07,572 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 09:37:07,573 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 09:37:07,573 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 09:37:07,573 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 09:37:07,573 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 09:37:07,573 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 09:37:07,573 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 09:37:07,573 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 09:37:07,573 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 09:37:07,573 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 09:37:07,573 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 09:37:07,573 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 09:37:07,573 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 -> 6fd297418200393a9bb890e84311a80b6eacd7d5d7cdd65efb1397f8b8ab870f [2025-03-04 09:37:07,817 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 09:37:07,827 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 09:37:07,829 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 09:37:07,830 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 09:37:07,831 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 09:37:07,832 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test3-1.i [2025-03-04 09:37:09,080 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f870d9b9/8442ddbec06243369bd826ddbd064417/FLAGbe9bf28e3 [2025-03-04 09:37:09,403 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 09:37:09,403 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test3-1.i [2025-03-04 09:37:09,422 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f870d9b9/8442ddbec06243369bd826ddbd064417/FLAGbe9bf28e3 [2025-03-04 09:37:09,438 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f870d9b9/8442ddbec06243369bd826ddbd064417 [2025-03-04 09:37:09,440 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 09:37:09,441 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 09:37:09,443 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 09:37:09,443 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 09:37:09,446 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 09:37:09,447 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:37:09" (1/1) ... [2025-03-04 09:37:09,449 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f32dad7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:37:09, skipping insertion in model container [2025-03-04 09:37:09,449 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:37:09" (1/1) ... [2025-03-04 09:37:09,481 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 09:37:09,725 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 09:37:09,757 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 09:37:09,760 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 09:37:09,762 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 09:37:09,767 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 09:37:09,788 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 09:37:09,788 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 09:37:09,790 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 09:37:09,790 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 09:37:09,794 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 09:37:09,795 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 09:37:09,795 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 09:37:09,796 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:37:09,800 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 09:37:09,805 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:37:09,814 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 09:37:09,815 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6d41870a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:37:09, skipping insertion in model container [2025-03-04 09:37:09,815 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 09:37:09,815 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-03-04 09:37:09,816 INFO L158 Benchmark]: Toolchain (without parser) took 374.88ms. Allocated memory is still 142.6MB. Free memory was 112.0MB in the beginning and 92.8MB in the end (delta: 19.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-04 09:37:09,817 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 201.3MB. Free memory is still 124.3MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 09:37:09,817 INFO L158 Benchmark]: CACSL2BoogieTranslator took 372.69ms. Allocated memory is still 142.6MB. Free memory was 112.0MB in the beginning and 92.8MB in the end (delta: 19.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-04 09:37:09,817 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 201.3MB. Free memory is still 124.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 372.69ms. Allocated memory is still 142.6MB. Free memory was 112.0MB in the beginning and 92.8MB in the end (delta: 19.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 750]: 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_SFH_nondet_test3-1.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 6fd297418200393a9bb890e84311a80b6eacd7d5d7cdd65efb1397f8b8ab870f --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 09:37:11,391 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 09:37:11,452 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-03-04 09:37:11,456 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 09:37:11,456 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 09:37:11,488 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 09:37:11,488 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 09:37:11,488 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 09:37:11,489 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 09:37:11,489 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 09:37:11,489 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 09:37:11,489 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 09:37:11,489 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 09:37:11,489 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 09:37:11,489 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 09:37:11,489 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 09:37:11,489 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 09:37:11,489 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 09:37:11,489 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 09:37:11,489 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 09:37:11,489 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-04 09:37:11,490 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-04 09:37:11,490 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-04 09:37:11,490 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 09:37:11,490 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-04 09:37:11,490 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-04 09:37:11,490 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-04 09:37:11,490 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 09:37:11,490 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 09:37:11,490 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 09:37:11,490 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 09:37:11,490 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 09:37:11,490 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 09:37:11,490 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 09:37:11,490 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 09:37:11,490 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 09:37:11,490 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 09:37:11,490 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 09:37:11,490 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-04 09:37:11,490 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-04 09:37:11,491 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 09:37:11,491 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 09:37:11,491 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 09:37:11,491 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 09:37:11,491 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 -> 6fd297418200393a9bb890e84311a80b6eacd7d5d7cdd65efb1397f8b8ab870f [2025-03-04 09:37:11,690 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 09:37:11,696 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 09:37:11,698 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 09:37:11,700 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 09:37:11,701 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 09:37:11,701 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test3-1.i [2025-03-04 09:37:12,874 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17cb60963/3a06d8063fa1495ba9c0f39414fc9f09/FLAG2e56a1dbd [2025-03-04 09:37:13,174 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 09:37:13,175 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test3-1.i [2025-03-04 09:37:13,191 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17cb60963/3a06d8063fa1495ba9c0f39414fc9f09/FLAG2e56a1dbd [2025-03-04 09:37:13,447 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17cb60963/3a06d8063fa1495ba9c0f39414fc9f09 [2025-03-04 09:37:13,449 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 09:37:13,450 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 09:37:13,451 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 09:37:13,451 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 09:37:13,454 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 09:37:13,454 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:37:13" (1/1) ... [2025-03-04 09:37:13,455 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cc6ca77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:37:13, skipping insertion in model container [2025-03-04 09:37:13,455 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:37:13" (1/1) ... [2025-03-04 09:37:13,486 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 09:37:13,702 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 09:37:13,731 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 09:37:13,733 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 09:37:13,737 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:37:13,744 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 09:37:13,774 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 09:37:13,774 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 09:37:13,776 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:37:13,776 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:37:13,778 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 09:37:13,779 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 09:37:13,781 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 09:37:13,781 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 09:37:13,784 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:37:13,789 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:37:13,803 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-03-04 09:37:13,812 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 09:37:13,842 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 09:37:13,861 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 09:37:13,866 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 09:37:13,869 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 09:37:13,873 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 09:37:13,898 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 09:37:13,899 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 09:37:13,900 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:37:13,901 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:37:13,903 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 09:37:13,904 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 09:37:13,906 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 09:37:13,907 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 09:37:13,910 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:37:13,912 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:37:13,916 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 09:37:13,991 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:37:14,020 INFO L204 MainTranslator]: Completed translation [2025-03-04 09:37:14,020 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:37:14 WrapperNode [2025-03-04 09:37:14,021 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 09:37:14,022 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 09:37:14,022 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 09:37:14,022 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 09:37:14,026 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:37:14" (1/1) ... [2025-03-04 09:37:14,058 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:37:14" (1/1) ... [2025-03-04 09:37:14,091 INFO L138 Inliner]: procedures = 180, calls = 274, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1005 [2025-03-04 09:37:14,092 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 09:37:14,092 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 09:37:14,092 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 09:37:14,092 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 09:37:14,099 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:37:14" (1/1) ... [2025-03-04 09:37:14,099 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:37:14" (1/1) ... [2025-03-04 09:37:14,107 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:37:14" (1/1) ... [2025-03-04 09:37:14,156 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 09:37:14,156 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:37:14" (1/1) ... [2025-03-04 09:37:14,157 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:37:14" (1/1) ... [2025-03-04 09:37:14,181 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:37:14" (1/1) ... [2025-03-04 09:37:14,183 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:37:14" (1/1) ... [2025-03-04 09:37:14,191 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:37:14" (1/1) ... [2025-03-04 09:37:14,195 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:37:14" (1/1) ... [2025-03-04 09:37:14,200 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 09:37:14,200 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 09:37:14,201 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 09:37:14,201 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 09:37:14,201 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:37:14" (1/1) ... [2025-03-04 09:37:14,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 09:37:14,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:37:14,230 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 09:37:14,233 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 09:37:14,251 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2025-03-04 09:37:14,251 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2025-03-04 09:37:14,252 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2025-03-04 09:37:14,252 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-03-04 09:37:14,252 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-03-04 09:37:14,252 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2025-03-04 09:37:14,252 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-04 09:37:14,253 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-04 09:37:14,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-03-04 09:37:14,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-03-04 09:37:14,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2025-03-04 09:37:14,253 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-03-04 09:37:14,253 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-03-04 09:37:14,253 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2025-03-04 09:37:14,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-04 09:37:14,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 09:37:14,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-04 09:37:14,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-04 09:37:14,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-04 09:37:14,254 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-04 09:37:14,254 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-04 09:37:14,254 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-04 09:37:14,254 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-04 09:37:14,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-03-04 09:37:14,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-03-04 09:37:14,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2025-03-04 09:37:14,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-04 09:37:14,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-04 09:37:14,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-03-04 09:37:14,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2025-03-04 09:37:14,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 09:37:14,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 09:37:14,432 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 09:37:14,434 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 09:37:16,995 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L734: 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 09:37:17,073 INFO L? ?]: Removed 1080 outVars from TransFormulas that were not future-live. [2025-03-04 09:37:17,074 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 09:37:17,092 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 09:37:17,092 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 09:37:17,092 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 09:37:17 BoogieIcfgContainer [2025-03-04 09:37:17,092 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 09:37:17,094 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 09:37:17,094 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 09:37:17,097 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 09:37:17,097 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 09:37:13" (1/3) ... [2025-03-04 09:37:17,097 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c02ba4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 09:37:17, skipping insertion in model container [2025-03-04 09:37:17,097 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:37:14" (2/3) ... [2025-03-04 09:37:17,098 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c02ba4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 09:37:17, skipping insertion in model container [2025-03-04 09:37:17,098 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 09:37:17" (3/3) ... [2025-03-04 09:37:17,098 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_SFH_nondet_test3-1.i [2025-03-04 09:37:17,108 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 09:37:17,109 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_SFH_nondet_test3-1.i that has 5 procedures, 1063 locations, 1 initial locations, 36 loop locations, and 525 error locations. [2025-03-04 09:37:17,142 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 09:37:17,152 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;@57b8354b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 09:37:17,153 INFO L334 AbstractCegarLoop]: Starting to check reachability of 525 error locations. [2025-03-04 09:37:17,158 INFO L276 IsEmpty]: Start isEmpty. Operand has 1053 states, 523 states have (on average 2.2275334608030595) internal successors, (1165), 1046 states have internal predecessors, (1165), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-03-04 09:37:17,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-03-04 09:37:17,163 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:37:17,163 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-03-04 09:37:17,164 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 09:37:17,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:37:17,167 INFO L85 PathProgramCache]: Analyzing trace with hash 37061725, now seen corresponding path program 1 times [2025-03-04 09:37:17,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:37:17,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [210376398] [2025-03-04 09:37:17,175 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:37:17,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:37:17,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:37:17,179 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 09:37:17,180 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 09:37:17,296 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-04 09:37:17,304 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-04 09:37:17,304 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:37:17,304 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:37:17,306 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-04 09:37:17,308 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:37:17,359 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 09:37:17,363 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 09:37:17,363 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:37:17,363 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:37:17,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210376398] [2025-03-04 09:37:17,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [210376398] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:37:17,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:37:17,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:37:17,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753930318] [2025-03-04 09:37:17,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:37:17,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:37:17,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:37:17,380 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:37:17,381 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2025-03-04 09:37:17,383 INFO L87 Difference]: Start difference. First operand has 1053 states, 523 states have (on average 2.2275334608030595) internal successors, (1165), 1046 states have internal predecessors, (1165), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 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 09:37:18,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:37:18,904 INFO L93 Difference]: Finished difference Result 1437 states and 1540 transitions. [2025-03-04 09:37:18,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:37:18,907 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 09:37:18,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:37:18,917 INFO L225 Difference]: With dead ends: 1437 [2025-03-04 09:37:18,917 INFO L226 Difference]: Without dead ends: 1434 [2025-03-04 09:37:18,918 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 09:37:18,919 INFO L435 NwaCegarLoop]: 910 mSDtfsCounter, 420 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 1472 SdHoareTripleChecker+Invalid, 2288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1541 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-04 09:37:18,920 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [422 Valid, 1472 Invalid, 2288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 747 Invalid, 0 Unknown, 1541 Unchecked, 1.4s Time] [2025-03-04 09:37:18,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1434 states. [2025-03-04 09:37:18,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1434 to 1041. [2025-03-04 09:37:18,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1041 states, 517 states have (on average 2.104448742746615) internal successors, (1088), 1034 states have internal predecessors, (1088), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-03-04 09:37:18,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1041 states to 1041 states and 1098 transitions. [2025-03-04 09:37:18,990 INFO L78 Accepts]: Start accepts. Automaton has 1041 states and 1098 transitions. Word has length 4 [2025-03-04 09:37:18,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:37:18,990 INFO L471 AbstractCegarLoop]: Abstraction has 1041 states and 1098 transitions. [2025-03-04 09:37:18,990 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 09:37:18,990 INFO L276 IsEmpty]: Start isEmpty. Operand 1041 states and 1098 transitions. [2025-03-04 09:37:18,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-03-04 09:37:18,990 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:37:18,991 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-03-04 09:37:18,997 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 09:37:19,192 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 09:37:19,192 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr522REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-04 09:37:19,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:37:19,192 INFO L85 PathProgramCache]: Analyzing trace with hash 37062908, now seen corresponding path program 1 times [2025-03-04 09:37:19,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:37:19,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [430708890] [2025-03-04 09:37:19,193 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:37:19,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:37:19,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:37:19,195 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 09:37:19,196 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 09:37:19,276 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-04 09:37:19,280 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-04 09:37:19,280 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:37:19,280 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:37:19,281 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:37:19,282 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:37:19,292 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 09:37:19,300 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 09:37:19,301 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:37:19,301 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:37:19,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430708890] [2025-03-04 09:37:19,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430708890] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:37:19,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:37:19,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 09:37:19,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534114238] [2025-03-04 09:37:19,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:37:19,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:37:19,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:37:19,302 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:37:19,302 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:37:19,303 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 09:37:20,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:37:20,222 INFO L93 Difference]: Finished difference Result 1048 states and 1107 transitions. [2025-03-04 09:37:20,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:37:20,223 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 09:37:20,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:37:20,226 INFO L225 Difference]: With dead ends: 1048 [2025-03-04 09:37:20,226 INFO L226 Difference]: Without dead ends: 1048 [2025-03-04 09:37:20,226 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 09:37:20,227 INFO L435 NwaCegarLoop]: 624 mSDtfsCounter, 958 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 963 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-03-04 09:37:20,227 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [963 Valid, 685 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-03-04 09:37:20,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2025-03-04 09:37:20,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 1040. [2025-03-04 09:37:20,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1040 states, 526 states have (on average 2.070342205323194) internal successors, (1089), 1032 states have internal predecessors, (1089), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-03-04 09:37:20,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1040 states to 1040 states and 1099 transitions. [2025-03-04 09:37:20,246 INFO L78 Accepts]: Start accepts. Automaton has 1040 states and 1099 transitions. Word has length 4 [2025-03-04 09:37:20,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:37:20,247 INFO L471 AbstractCegarLoop]: Abstraction has 1040 states and 1099 transitions. [2025-03-04 09:37:20,247 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 09:37:20,247 INFO L276 IsEmpty]: Start isEmpty. Operand 1040 states and 1099 transitions. [2025-03-04 09:37:20,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-03-04 09:37:20,247 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:37:20,247 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-03-04 09:37:20,253 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 09:37:20,452 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 09:37:20,452 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr523REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-04 09:37:20,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:37:20,453 INFO L85 PathProgramCache]: Analyzing trace with hash 37062909, now seen corresponding path program 1 times [2025-03-04 09:37:20,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:37:20,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [191330787] [2025-03-04 09:37:20,453 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:37:20,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:37:20,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:37:20,456 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 09:37:20,457 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 09:37:20,531 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-04 09:37:20,535 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-04 09:37:20,535 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:37:20,535 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:37:20,536 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 09:37:20,537 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:37:20,544 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 09:37:20,562 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 09:37:20,562 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:37:20,562 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:37:20,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191330787] [2025-03-04 09:37:20,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191330787] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:37:20,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:37:20,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 09:37:20,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279451787] [2025-03-04 09:37:20,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:37:20,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:37:20,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:37:20,565 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:37:20,565 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:37:20,565 INFO L87 Difference]: Start difference. First operand 1040 states and 1099 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 09:37:22,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:37:22,182 INFO L93 Difference]: Finished difference Result 1442 states and 1535 transitions. [2025-03-04 09:37:22,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:37:22,183 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 09:37:22,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:37:22,186 INFO L225 Difference]: With dead ends: 1442 [2025-03-04 09:37:22,186 INFO L226 Difference]: Without dead ends: 1442 [2025-03-04 09:37:22,187 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 09:37:22,187 INFO L435 NwaCegarLoop]: 897 mSDtfsCounter, 430 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 1467 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-03-04 09:37:22,187 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [432 Valid, 1467 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 704 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-03-04 09:37:22,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1442 states. [2025-03-04 09:37:22,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1442 to 1248. [2025-03-04 09:37:22,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1248 states, 734 states have (on average 2.0572207084468666) internal successors, (1510), 1239 states have internal predecessors, (1510), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-03-04 09:37:22,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1248 states to 1248 states and 1522 transitions. [2025-03-04 09:37:22,208 INFO L78 Accepts]: Start accepts. Automaton has 1248 states and 1522 transitions. Word has length 4 [2025-03-04 09:37:22,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:37:22,208 INFO L471 AbstractCegarLoop]: Abstraction has 1248 states and 1522 transitions. [2025-03-04 09:37:22,208 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 09:37:22,208 INFO L276 IsEmpty]: Start isEmpty. Operand 1248 states and 1522 transitions. [2025-03-04 09:37:22,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-03-04 09:37:22,208 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:37:22,208 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:37:22,217 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-04 09:37:22,409 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 09:37:22,409 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr519REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-04 09:37:22,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:37:22,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1814354392, now seen corresponding path program 1 times [2025-03-04 09:37:22,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:37:22,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2076714069] [2025-03-04 09:37:22,410 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:37:22,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:37:22,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:37:22,416 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 09:37:22,418 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 09:37:22,501 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-04 09:37:22,511 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-04 09:37:22,511 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:37:22,511 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:37:22,513 INFO L256 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-04 09:37:22,514 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:37:22,528 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 09:37:22,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-04 09:37:22,603 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 09:37:22,618 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-04 09:37:22,618 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 09:37:22,634 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 09:37:22,634 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:37:22,634 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:37:22,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076714069] [2025-03-04 09:37:22,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076714069] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:37:22,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:37:22,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:37:22,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455309643] [2025-03-04 09:37:22,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:37:22,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:37:22,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:37:22,638 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:37:22,638 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:37:22,638 INFO L87 Difference]: Start difference. First operand 1248 states and 1522 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 09:37:24,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:37:24,069 INFO L93 Difference]: Finished difference Result 1250 states and 1525 transitions. [2025-03-04 09:37:24,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:37:24,069 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 09:37:24,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:37:24,072 INFO L225 Difference]: With dead ends: 1250 [2025-03-04 09:37:24,072 INFO L226 Difference]: Without dead ends: 1250 [2025-03-04 09:37:24,072 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 09:37:24,073 INFO L435 NwaCegarLoop]: 357 mSDtfsCounter, 1056 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 819 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1061 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-04 09:37:24,073 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1061 Valid, 408 Invalid, 837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 819 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-04 09:37:24,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2025-03-04 09:37:24,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 1028. [2025-03-04 09:37:24,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1028 states, 526 states have (on average 2.043726235741445) internal successors, (1075), 1020 states have internal predecessors, (1075), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-03-04 09:37:24,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 1085 transitions. [2025-03-04 09:37:24,086 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 1085 transitions. Word has length 8 [2025-03-04 09:37:24,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:37:24,086 INFO L471 AbstractCegarLoop]: Abstraction has 1028 states and 1085 transitions. [2025-03-04 09:37:24,086 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 09:37:24,086 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 1085 transitions. [2025-03-04 09:37:24,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-03-04 09:37:24,086 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:37:24,086 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:37:24,093 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 09:37:24,287 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 09:37:24,287 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr516REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-04 09:37:24,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:37:24,287 INFO L85 PathProgramCache]: Analyzing trace with hash 410412394, now seen corresponding path program 1 times [2025-03-04 09:37:24,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:37:24,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [861064255] [2025-03-04 09:37:24,288 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:37:24,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:37:24,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:37:24,290 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 09:37:24,291 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 09:37:24,368 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-04 09:37:24,375 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-04 09:37:24,375 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:37:24,375 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:37:24,377 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:37:24,378 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:37:24,383 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 09:37:24,389 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 09:37:24,389 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:37:24,389 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:37:24,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861064255] [2025-03-04 09:37:24,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861064255] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:37:24,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:37:24,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 09:37:24,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001484984] [2025-03-04 09:37:24,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:37:24,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:37:24,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:37:24,389 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:37:24,389 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:37:24,390 INFO L87 Difference]: Start difference. First operand 1028 states and 1085 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 09:37:25,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:37:25,418 INFO L93 Difference]: Finished difference Result 1363 states and 1451 transitions. [2025-03-04 09:37:25,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:37:25,418 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 09:37:25,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:37:25,421 INFO L225 Difference]: With dead ends: 1363 [2025-03-04 09:37:25,421 INFO L226 Difference]: Without dead ends: 1363 [2025-03-04 09:37:25,422 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 09:37:25,422 INFO L435 NwaCegarLoop]: 944 mSDtfsCounter, 924 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 929 SdHoareTripleChecker+Valid, 1190 SdHoareTripleChecker+Invalid, 808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-04 09:37:25,422 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [929 Valid, 1190 Invalid, 808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 756 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-04 09:37:25,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1363 states. [2025-03-04 09:37:25,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1363 to 980. [2025-03-04 09:37:25,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 980 states, 526 states have (on average 1.9524714828897338) internal successors, (1027), 972 states have internal predecessors, (1027), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-03-04 09:37:25,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 980 states to 980 states and 1037 transitions. [2025-03-04 09:37:25,435 INFO L78 Accepts]: Start accepts. Automaton has 980 states and 1037 transitions. Word has length 9 [2025-03-04 09:37:25,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:37:25,436 INFO L471 AbstractCegarLoop]: Abstraction has 980 states and 1037 transitions. [2025-03-04 09:37:25,436 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 09:37:25,436 INFO L276 IsEmpty]: Start isEmpty. Operand 980 states and 1037 transitions. [2025-03-04 09:37:25,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-03-04 09:37:25,436 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:37:25,436 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:37:25,442 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-04 09:37:25,641 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 09:37:25,641 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr517REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-04 09:37:25,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:37:25,641 INFO L85 PathProgramCache]: Analyzing trace with hash 410412395, now seen corresponding path program 1 times [2025-03-04 09:37:25,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:37:25,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1060376937] [2025-03-04 09:37:25,642 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:37:25,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:37:25,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:37:25,643 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 09:37:25,644 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 09:37:25,714 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-04 09:37:25,722 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-04 09:37:25,722 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:37:25,722 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:37:25,723 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 09:37:25,724 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:37:25,732 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 09:37:25,750 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 09:37:25,750 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:37:25,750 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:37:25,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060376937] [2025-03-04 09:37:25,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1060376937] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:37:25,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:37:25,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 09:37:25,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594187747] [2025-03-04 09:37:25,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:37:25,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:37:25,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:37:25,751 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:37:25,751 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:37:25,751 INFO L87 Difference]: Start difference. First operand 980 states and 1037 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 09:37:27,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:37:27,170 INFO L93 Difference]: Finished difference Result 1450 states and 1541 transitions. [2025-03-04 09:37:27,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:37:27,171 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 09:37:27,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:37:27,174 INFO L225 Difference]: With dead ends: 1450 [2025-03-04 09:37:27,174 INFO L226 Difference]: Without dead ends: 1450 [2025-03-04 09:37:27,175 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 09:37:27,175 INFO L435 NwaCegarLoop]: 1136 mSDtfsCounter, 687 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 1557 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-04 09:37:27,175 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [688 Valid, 1557 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-04 09:37:27,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1450 states. [2025-03-04 09:37:27,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1450 to 1007. [2025-03-04 09:37:27,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1007 states, 563 states have (on average 1.9378330373001775) internal successors, (1091), 999 states have internal predecessors, (1091), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-03-04 09:37:27,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1007 states to 1007 states and 1101 transitions. [2025-03-04 09:37:27,188 INFO L78 Accepts]: Start accepts. Automaton has 1007 states and 1101 transitions. Word has length 9 [2025-03-04 09:37:27,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:37:27,188 INFO L471 AbstractCegarLoop]: Abstraction has 1007 states and 1101 transitions. [2025-03-04 09:37:27,188 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 09:37:27,188 INFO L276 IsEmpty]: Start isEmpty. Operand 1007 states and 1101 transitions. [2025-03-04 09:37:27,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-03-04 09:37:27,188 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:37:27,189 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:37:27,195 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 09:37:27,389 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 09:37:27,389 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-04 09:37:27,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:37:27,390 INFO L85 PathProgramCache]: Analyzing trace with hash -468285169, now seen corresponding path program 1 times [2025-03-04 09:37:27,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:37:27,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [915167778] [2025-03-04 09:37:27,390 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:37:27,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:37:27,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:37:27,392 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 09:37:27,393 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 09:37:27,471 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-04 09:37:27,483 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-04 09:37:27,484 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:37:27,484 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:37:27,486 INFO L256 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-04 09:37:27,488 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:37:27,548 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 09:37:27,549 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 09:37:27,549 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:37:27,549 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:37:27,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915167778] [2025-03-04 09:37:27,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915167778] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:37:27,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:37:27,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:37:27,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101792025] [2025-03-04 09:37:27,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:37:27,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:37:27,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:37:27,550 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:37:27,550 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2025-03-04 09:37:27,550 INFO L87 Difference]: Start difference. First operand 1007 states and 1101 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:37:28,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:37:28,639 INFO L93 Difference]: Finished difference Result 1400 states and 1526 transitions. [2025-03-04 09:37:28,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:37:28,639 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2025-03-04 09:37:28,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:37:28,642 INFO L225 Difference]: With dead ends: 1400 [2025-03-04 09:37:28,642 INFO L226 Difference]: Without dead ends: 1399 [2025-03-04 09:37:28,642 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 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 09:37:28,643 INFO L435 NwaCegarLoop]: 839 mSDtfsCounter, 411 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 655 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 1390 SdHoareTripleChecker+Invalid, 2097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1442 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-04 09:37:28,643 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 1390 Invalid, 2097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 655 Invalid, 0 Unknown, 1442 Unchecked, 1.1s Time] [2025-03-04 09:37:28,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1399 states. [2025-03-04 09:37:28,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1399 to 1137. [2025-03-04 09:37:28,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1137 states, 691 states have (on average 1.918958031837916) internal successors, (1326), 1127 states have internal predecessors, (1326), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-03-04 09:37:28,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1137 states to 1137 states and 1340 transitions. [2025-03-04 09:37:28,655 INFO L78 Accepts]: Start accepts. Automaton has 1137 states and 1340 transitions. Word has length 12 [2025-03-04 09:37:28,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:37:28,656 INFO L471 AbstractCegarLoop]: Abstraction has 1137 states and 1340 transitions. [2025-03-04 09:37:28,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:37:28,656 INFO L276 IsEmpty]: Start isEmpty. Operand 1137 states and 1340 transitions. [2025-03-04 09:37:28,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-03-04 09:37:28,656 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:37:28,656 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:37:28,662 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 09:37:28,860 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 09:37:28,860 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-04 09:37:28,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:37:28,860 INFO L85 PathProgramCache]: Analyzing trace with hash -468284848, now seen corresponding path program 1 times [2025-03-04 09:37:28,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:37:28,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [196785008] [2025-03-04 09:37:28,861 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:37:28,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:37:28,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:37:28,862 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 09:37:28,863 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 09:37:28,942 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-04 09:37:28,952 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-04 09:37:28,953 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:37:28,953 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:37:28,954 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-04 09:37:28,955 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:37:29,000 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 09:37:29,001 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:37:29,001 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:37:29,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196785008] [2025-03-04 09:37:29,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196785008] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:37:29,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:37:29,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:37:29,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209506651] [2025-03-04 09:37:29,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:37:29,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:37:29,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:37:29,002 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:37:29,002 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:37:29,002 INFO L87 Difference]: Start difference. First operand 1137 states and 1340 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:37:29,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:37:29,355 INFO L93 Difference]: Finished difference Result 1513 states and 1723 transitions. [2025-03-04 09:37:29,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:37:29,355 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2025-03-04 09:37:29,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:37:29,358 INFO L225 Difference]: With dead ends: 1513 [2025-03-04 09:37:29,358 INFO L226 Difference]: Without dead ends: 1511 [2025-03-04 09:37:29,358 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 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 09:37:29,359 INFO L435 NwaCegarLoop]: 1086 mSDtfsCounter, 445 mSDsluCounter, 1918 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 3004 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-04 09:37:29,359 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [446 Valid, 3004 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-04 09:37:29,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1511 states. [2025-03-04 09:37:29,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1511 to 1332. [2025-03-04 09:37:29,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1332 states, 886 states have (on average 1.9051918735891649) internal successors, (1688), 1322 states have internal predecessors, (1688), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-03-04 09:37:29,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1332 states to 1332 states and 1702 transitions. [2025-03-04 09:37:29,373 INFO L78 Accepts]: Start accepts. Automaton has 1332 states and 1702 transitions. Word has length 12 [2025-03-04 09:37:29,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:37:29,373 INFO L471 AbstractCegarLoop]: Abstraction has 1332 states and 1702 transitions. [2025-03-04 09:37:29,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:37:29,374 INFO L276 IsEmpty]: Start isEmpty. Operand 1332 states and 1702 transitions. [2025-03-04 09:37:29,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-03-04 09:37:29,374 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:37:29,374 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:37:29,381 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 09:37:29,574 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 09:37:29,575 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr192REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-04 09:37:29,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:37:29,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1619062618, now seen corresponding path program 1 times [2025-03-04 09:37:29,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:37:29,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1783927339] [2025-03-04 09:37:29,575 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:37:29,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:37:29,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:37:29,577 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 09:37:29,577 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 09:37:29,655 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-04 09:37:29,665 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-04 09:37:29,665 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:37:29,665 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:37:29,667 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 09:37:29,668 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:37:29,671 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 09:37:29,694 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 09:37:29,694 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:37:29,694 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:37:29,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783927339] [2025-03-04 09:37:29,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783927339] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:37:29,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:37:29,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:37:29,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780798234] [2025-03-04 09:37:29,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:37:29,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:37:29,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:37:29,695 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:37:29,695 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:37:29,695 INFO L87 Difference]: Start difference. First operand 1332 states and 1702 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 09:37:30,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:37:30,831 INFO L93 Difference]: Finished difference Result 1329 states and 1653 transitions. [2025-03-04 09:37:30,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:37:30,833 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 09:37:30,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:37:30,835 INFO L225 Difference]: With dead ends: 1329 [2025-03-04 09:37:30,835 INFO L226 Difference]: Without dead ends: 1329 [2025-03-04 09:37:30,836 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 09:37:30,836 INFO L435 NwaCegarLoop]: 580 mSDtfsCounter, 956 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 929 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 961 SdHoareTripleChecker+Valid, 1117 SdHoareTripleChecker+Invalid, 958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-04 09:37:30,836 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [961 Valid, 1117 Invalid, 958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 929 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-04 09:37:30,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1329 states. [2025-03-04 09:37:30,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1329 to 1309. [2025-03-04 09:37:30,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1309 states, 886 states have (on average 1.827313769751693) internal successors, (1619), 1299 states have internal predecessors, (1619), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-03-04 09:37:30,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1309 states to 1309 states and 1633 transitions. [2025-03-04 09:37:30,848 INFO L78 Accepts]: Start accepts. Automaton has 1309 states and 1633 transitions. Word has length 13 [2025-03-04 09:37:30,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:37:30,848 INFO L471 AbstractCegarLoop]: Abstraction has 1309 states and 1633 transitions. [2025-03-04 09:37:30,848 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 09:37:30,849 INFO L276 IsEmpty]: Start isEmpty. Operand 1309 states and 1633 transitions. [2025-03-04 09:37:30,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-03-04 09:37:30,849 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:37:30,849 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:37:30,856 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 09:37:31,054 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 09:37:31,054 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr193REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-04 09:37:31,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:37:31,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1619062617, now seen corresponding path program 1 times [2025-03-04 09:37:31,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:37:31,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2109027780] [2025-03-04 09:37:31,054 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:37:31,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:37:31,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:37:31,056 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 09:37:31,057 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 09:37:31,145 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-04 09:37:31,157 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-04 09:37:31,157 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:37:31,158 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:37:31,160 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-04 09:37:31,161 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:37:31,172 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 09:37:31,227 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 09:37:31,227 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:37:31,227 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:37:31,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109027780] [2025-03-04 09:37:31,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109027780] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:37:31,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:37:31,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:37:31,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114542345] [2025-03-04 09:37:31,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:37:31,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:37:31,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:37:31,229 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:37:31,229 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:37:31,229 INFO L87 Difference]: Start difference. First operand 1309 states and 1633 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 09:37:32,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:37:32,930 INFO L93 Difference]: Finished difference Result 1783 states and 2220 transitions. [2025-03-04 09:37:32,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:37:32,930 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 09:37:32,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:37:32,934 INFO L225 Difference]: With dead ends: 1783 [2025-03-04 09:37:32,934 INFO L226 Difference]: Without dead ends: 1783 [2025-03-04 09:37:32,934 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 09:37:32,934 INFO L435 NwaCegarLoop]: 835 mSDtfsCounter, 408 mSDsluCounter, 996 mSDsCounter, 0 mSdLazyCounter, 1151 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 1831 SdHoareTripleChecker+Invalid, 1166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-03-04 09:37:32,935 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [410 Valid, 1831 Invalid, 1166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1151 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-03-04 09:37:32,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1783 states. [2025-03-04 09:37:32,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1783 to 1588. [2025-03-04 09:37:32,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1588 states, 1163 states have (on average 1.8486672398968185) internal successors, (2150), 1576 states have internal predecessors, (2150), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-03-04 09:37:32,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1588 states to 1588 states and 2168 transitions. [2025-03-04 09:37:32,950 INFO L78 Accepts]: Start accepts. Automaton has 1588 states and 2168 transitions. Word has length 13 [2025-03-04 09:37:32,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:37:32,950 INFO L471 AbstractCegarLoop]: Abstraction has 1588 states and 2168 transitions. [2025-03-04 09:37:32,950 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 09:37:32,950 INFO L276 IsEmpty]: Start isEmpty. Operand 1588 states and 2168 transitions. [2025-03-04 09:37:32,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-03-04 09:37:32,950 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:37:32,950 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:37:32,958 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 09:37:33,155 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 09:37:33,155 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr169REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-04 09:37:33,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:37:33,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1348622180, now seen corresponding path program 1 times [2025-03-04 09:37:33,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:37:33,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1725910230] [2025-03-04 09:37:33,158 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:37:33,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:37:33,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:37:33,160 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 09:37:33,163 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 09:37:33,246 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-04 09:37:33,257 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-04 09:37:33,257 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:37:33,257 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:37:33,259 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:37:33,260 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:37:33,273 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 09:37:33,273 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:37:33,274 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:37:33,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725910230] [2025-03-04 09:37:33,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725910230] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:37:33,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:37:33,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:37:33,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839455024] [2025-03-04 09:37:33,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:37:33,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:37:33,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:37:33,274 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:37:33,274 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:37:33,275 INFO L87 Difference]: Start difference. First operand 1588 states and 2168 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 09:37:33,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:37:33,324 INFO L93 Difference]: Finished difference Result 1522 states and 2043 transitions. [2025-03-04 09:37:33,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 09:37:33,325 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 09:37:33,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:37:33,329 INFO L225 Difference]: With dead ends: 1522 [2025-03-04 09:37:33,329 INFO L226 Difference]: Without dead ends: 1522 [2025-03-04 09:37:33,329 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 09:37:33,329 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 09:37:33,329 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 09:37:33,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1522 states. [2025-03-04 09:37:33,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1522 to 1522. [2025-03-04 09:37:33,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1522 states, 1116 states have (on average 1.814516129032258) internal successors, (2025), 1510 states have internal predecessors, (2025), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-03-04 09:37:33,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1522 states to 1522 states and 2043 transitions. [2025-03-04 09:37:33,350 INFO L78 Accepts]: Start accepts. Automaton has 1522 states and 2043 transitions. Word has length 14 [2025-03-04 09:37:33,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:37:33,350 INFO L471 AbstractCegarLoop]: Abstraction has 1522 states and 2043 transitions. [2025-03-04 09:37:33,350 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 09:37:33,350 INFO L276 IsEmpty]: Start isEmpty. Operand 1522 states and 2043 transitions. [2025-03-04 09:37:33,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-03-04 09:37:33,351 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:37:33,351 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 09:37:33,360 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 09:37:33,551 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 09:37:33,552 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr508REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-04 09:37:33,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:37:33,552 INFO L85 PathProgramCache]: Analyzing trace with hash -233651028, now seen corresponding path program 1 times [2025-03-04 09:37:33,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:37:33,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1282077564] [2025-03-04 09:37:33,552 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:37:33,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:37:33,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:37:33,554 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 09:37:33,555 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 09:37:33,644 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-04 09:37:33,661 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-04 09:37:33,662 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:37:33,662 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:37:33,664 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 09:37:33,666 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:37:33,670 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 09:37:33,695 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 09:37:33,695 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:37:33,695 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:37:33,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282077564] [2025-03-04 09:37:33,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282077564] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:37:33,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:37:33,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:37:33,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721335886] [2025-03-04 09:37:33,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:37:33,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:37:33,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:37:33,696 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:37:33,696 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:37:33,696 INFO L87 Difference]: Start difference. First operand 1522 states and 2043 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 09:37:35,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:37:35,049 INFO L93 Difference]: Finished difference Result 1949 states and 2575 transitions. [2025-03-04 09:37:35,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:37:35,049 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 09:37:35,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:37:35,053 INFO L225 Difference]: With dead ends: 1949 [2025-03-04 09:37:35,053 INFO L226 Difference]: Without dead ends: 1949 [2025-03-04 09:37:35,054 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 09:37:35,054 INFO L435 NwaCegarLoop]: 794 mSDtfsCounter, 889 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 1243 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 894 SdHoareTripleChecker+Valid, 1578 SdHoareTripleChecker+Invalid, 1271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-04 09:37:35,054 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [894 Valid, 1578 Invalid, 1271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1243 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-04 09:37:35,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1949 states. [2025-03-04 09:37:35,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1949 to 1499. [2025-03-04 09:37:35,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1499 states, 1116 states have (on average 1.7732974910394266) internal successors, (1979), 1487 states have internal predecessors, (1979), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-03-04 09:37:35,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1499 states to 1499 states and 1997 transitions. [2025-03-04 09:37:35,070 INFO L78 Accepts]: Start accepts. Automaton has 1499 states and 1997 transitions. Word has length 18 [2025-03-04 09:37:35,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:37:35,070 INFO L471 AbstractCegarLoop]: Abstraction has 1499 states and 1997 transitions. [2025-03-04 09:37:35,070 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 09:37:35,070 INFO L276 IsEmpty]: Start isEmpty. Operand 1499 states and 1997 transitions. [2025-03-04 09:37:35,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-03-04 09:37:35,070 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:37:35,071 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 09:37:35,077 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 09:37:35,271 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 09:37:35,271 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 09:37:35,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:37:35,271 INFO L85 PathProgramCache]: Analyzing trace with hash -233651027, now seen corresponding path program 1 times [2025-03-04 09:37:35,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:37:35,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [47005497] [2025-03-04 09:37:35,272 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:37:35,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:37:35,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:37:35,273 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 09:37:35,274 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 09:37:35,356 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-04 09:37:35,376 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-04 09:37:35,377 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:37:35,377 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:37:35,381 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-04 09:37:35,382 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:37:35,387 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-04 09:37:35,446 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 09:37:35,447 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:37:35,447 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:37:35,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47005497] [2025-03-04 09:37:35,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47005497] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:37:35,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:37:35,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:37:35,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224084468] [2025-03-04 09:37:35,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:37:35,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:37:35,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:37:35,448 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:37:35,448 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:37:35,448 INFO L87 Difference]: Start difference. First operand 1499 states and 1997 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 09:37:37,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:37:37,293 INFO L93 Difference]: Finished difference Result 2135 states and 2753 transitions. [2025-03-04 09:37:37,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:37:37,294 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 09:37:37,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:37:37,299 INFO L225 Difference]: With dead ends: 2135 [2025-03-04 09:37:37,299 INFO L226 Difference]: Without dead ends: 2135 [2025-03-04 09:37:37,299 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 09:37:37,300 INFO L435 NwaCegarLoop]: 1075 mSDtfsCounter, 725 mSDsluCounter, 1079 mSDsCounter, 0 mSdLazyCounter, 1290 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 2154 SdHoareTripleChecker+Invalid, 1312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-03-04 09:37:37,300 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [726 Valid, 2154 Invalid, 1312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1290 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-03-04 09:37:37,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2135 states. [2025-03-04 09:37:37,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2135 to 1613. [2025-03-04 09:37:37,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1613 states, 1230 states have (on average 1.7211382113821139) internal successors, (2117), 1601 states have internal predecessors, (2117), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-03-04 09:37:37,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1613 states to 1613 states and 2135 transitions. [2025-03-04 09:37:37,315 INFO L78 Accepts]: Start accepts. Automaton has 1613 states and 2135 transitions. Word has length 18 [2025-03-04 09:37:37,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:37:37,315 INFO L471 AbstractCegarLoop]: Abstraction has 1613 states and 2135 transitions. [2025-03-04 09:37:37,315 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 09:37:37,315 INFO L276 IsEmpty]: Start isEmpty. Operand 1613 states and 2135 transitions. [2025-03-04 09:37:37,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-03-04 09:37:37,318 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:37:37,318 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 09:37:37,326 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-03-04 09:37:37,519 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 09:37:37,519 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr509REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-04 09:37:37,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:37:37,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1986178280, now seen corresponding path program 1 times [2025-03-04 09:37:37,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:37:37,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1803503257] [2025-03-04 09:37:37,520 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:37:37,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:37:37,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:37:37,522 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 09:37:37,523 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 09:37:37,621 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-03-04 09:37:37,671 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-03-04 09:37:37,671 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:37:37,671 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:37:37,680 INFO L256 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-04 09:37:37,682 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:37:37,718 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 09:37:37,912 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 09:37:37,912 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:37:38,335 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 09:37:38,336 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:37:38,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803503257] [2025-03-04 09:37:38,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1803503257] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 09:37:38,336 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 09:37:38,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2025-03-04 09:37:38,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727277271] [2025-03-04 09:37:38,336 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 09:37:38,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-04 09:37:38,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:37:38,337 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-04 09:37:38,337 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-04 09:37:38,337 INFO L87 Difference]: Start difference. First operand 1613 states and 2135 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 09:37:43,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:37:43,672 INFO L93 Difference]: Finished difference Result 2491 states and 3243 transitions. [2025-03-04 09:37:43,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-04 09:37:43,673 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 09:37:43,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:37:43,678 INFO L225 Difference]: With dead ends: 2491 [2025-03-04 09:37:43,679 INFO L226 Difference]: Without dead ends: 2491 [2025-03-04 09:37:43,679 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 09:37:43,679 INFO L435 NwaCegarLoop]: 1102 mSDtfsCounter, 2298 mSDsluCounter, 1877 mSDsCounter, 0 mSdLazyCounter, 2027 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2300 SdHoareTripleChecker+Valid, 2979 SdHoareTripleChecker+Invalid, 2055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 2027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2025-03-04 09:37:43,679 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2300 Valid, 2979 Invalid, 2055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 2027 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2025-03-04 09:37:43,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2491 states. [2025-03-04 09:37:43,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2491 to 1777. [2025-03-04 09:37:43,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1777 states, 1394 states have (on average 1.6850789096126255) internal successors, (2349), 1765 states have internal predecessors, (2349), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-03-04 09:37:43,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1777 states to 1777 states and 2367 transitions. [2025-03-04 09:37:43,712 INFO L78 Accepts]: Start accepts. Automaton has 1777 states and 2367 transitions. Word has length 37 [2025-03-04 09:37:43,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:37:43,712 INFO L471 AbstractCegarLoop]: Abstraction has 1777 states and 2367 transitions. [2025-03-04 09:37:43,712 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 09:37:43,712 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states and 2367 transitions. [2025-03-04 09:37:43,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2025-03-04 09:37:43,713 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:37:43,713 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] [2025-03-04 09:37:43,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-03-04 09:37:43,913 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 09:37:43,913 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr108REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-04 09:37:43,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:37:43,914 INFO L85 PathProgramCache]: Analyzing trace with hash -118817617, now seen corresponding path program 1 times [2025-03-04 09:37:43,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:37:43,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1124433482] [2025-03-04 09:37:43,914 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:37:43,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:37:43,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:37:43,916 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 09:37:43,917 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 09:37:44,003 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 47 statements into 1 equivalence classes. [2025-03-04 09:37:44,032 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 47 of 47 statements. [2025-03-04 09:37:44,032 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:37:44,032 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:37:44,036 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:37:44,037 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:37:44,061 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 09:37:44,061 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:37:44,062 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:37:44,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124433482] [2025-03-04 09:37:44,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124433482] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:37:44,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:37:44,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:37:44,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148214500] [2025-03-04 09:37:44,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:37:44,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:37:44,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:37:44,062 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:37:44,062 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:37:44,062 INFO L87 Difference]: Start difference. First operand 1777 states and 2367 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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 09:37:44,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:37:44,119 INFO L93 Difference]: Finished difference Result 1569 states and 1821 transitions. [2025-03-04 09:37:44,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:37:44,120 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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 47 [2025-03-04 09:37:44,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:37:44,123 INFO L225 Difference]: With dead ends: 1569 [2025-03-04 09:37:44,123 INFO L226 Difference]: Without dead ends: 1569 [2025-03-04 09:37:44,123 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 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 09:37:44,124 INFO L435 NwaCegarLoop]: 974 mSDtfsCounter, 102 mSDsluCounter, 845 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 1819 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 09:37:44,124 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 1819 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 09:37:44,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2025-03-04 09:37:44,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1406. [2025-03-04 09:37:44,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1406 states, 1025 states have (on average 1.5853658536585367) internal successors, (1625), 1396 states have internal predecessors, (1625), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-03-04 09:37:44,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1406 states to 1406 states and 1639 transitions. [2025-03-04 09:37:44,136 INFO L78 Accepts]: Start accepts. Automaton has 1406 states and 1639 transitions. Word has length 47 [2025-03-04 09:37:44,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:37:44,136 INFO L471 AbstractCegarLoop]: Abstraction has 1406 states and 1639 transitions. [2025-03-04 09:37:44,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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 09:37:44,137 INFO L276 IsEmpty]: Start isEmpty. Operand 1406 states and 1639 transitions. [2025-03-04 09:37:44,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2025-03-04 09:37:44,137 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:37:44,137 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:37:44,146 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-03-04 09:37:44,338 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 09:37:44,338 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-04 09:37:44,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:37:44,338 INFO L85 PathProgramCache]: Analyzing trace with hash 291859213, now seen corresponding path program 1 times [2025-03-04 09:37:44,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:37:44,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [418326974] [2025-03-04 09:37:44,339 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:37:44,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:37:44,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:37:44,341 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 09:37:44,341 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 09:37:44,436 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 50 statements into 1 equivalence classes. [2025-03-04 09:37:44,471 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 50 of 50 statements. [2025-03-04 09:37:44,471 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:37:44,471 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:37:44,475 INFO L256 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:37:44,476 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:37:44,511 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 09:37:44,511 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:37:44,511 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:37:44,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418326974] [2025-03-04 09:37:44,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418326974] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:37:44,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:37:44,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:37:44,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368386290] [2025-03-04 09:37:44,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:37:44,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:37:44,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:37:44,512 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:37:44,512 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:37:44,512 INFO L87 Difference]: Start difference. First operand 1406 states and 1639 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:37:44,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:37:44,556 INFO L93 Difference]: Finished difference Result 1388 states and 1609 transitions. [2025-03-04 09:37:44,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 09:37:44,557 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2025-03-04 09:37:44,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:37:44,560 INFO L225 Difference]: With dead ends: 1388 [2025-03-04 09:37:44,560 INFO L226 Difference]: Without dead ends: 1388 [2025-03-04 09:37:44,560 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:37:44,561 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 09:37:44,563 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 09:37:44,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1388 states. [2025-03-04 09:37:44,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1388 to 1388. [2025-03-04 09:37:44,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1388 states, 1007 states have (on average 1.5839126117179743) internal successors, (1595), 1378 states have internal predecessors, (1595), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-03-04 09:37:44,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 1609 transitions. [2025-03-04 09:37:44,573 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 1609 transitions. Word has length 50 [2025-03-04 09:37:44,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:37:44,573 INFO L471 AbstractCegarLoop]: Abstraction has 1388 states and 1609 transitions. [2025-03-04 09:37:44,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:37:44,574 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 1609 transitions. [2025-03-04 09:37:44,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2025-03-04 09:37:44,574 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:37:44,574 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 09:37:44,581 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 09:37:44,774 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 09:37:44,775 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr427REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-04 09:37:44,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:37:44,775 INFO L85 PathProgramCache]: Analyzing trace with hash -2122717356, now seen corresponding path program 1 times [2025-03-04 09:37:44,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:37:44,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2120160082] [2025-03-04 09:37:44,775 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:37:44,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:37:44,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:37:44,779 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 09:37:44,779 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 09:37:44,875 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 52 statements into 1 equivalence classes. [2025-03-04 09:37:44,926 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 52 of 52 statements. [2025-03-04 09:37:44,927 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:37:44,927 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:37:44,934 INFO L256 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:37:44,936 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:37:44,965 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 09:37:44,966 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:37:44,966 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:37:44,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120160082] [2025-03-04 09:37:44,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120160082] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:37:44,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:37:44,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:37:44,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649905576] [2025-03-04 09:37:44,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:37:44,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:37:44,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:37:44,968 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:37:44,968 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:37:44,968 INFO L87 Difference]: Start difference. First operand 1388 states and 1609 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 09:37:45,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:37:45,027 INFO L93 Difference]: Finished difference Result 1077 states and 1173 transitions. [2025-03-04 09:37:45,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 09:37:45,027 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 09:37:45,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:37:45,029 INFO L225 Difference]: With dead ends: 1077 [2025-03-04 09:37:45,029 INFO L226 Difference]: Without dead ends: 1077 [2025-03-04 09:37:45,030 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 09:37:45,030 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 09:37:45,030 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 09:37:45,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1077 states. [2025-03-04 09:37:45,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1077 to 1075. [2025-03-04 09:37:45,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 717 states have (on average 1.6136680613668062) internal successors, (1157), 1065 states have internal predecessors, (1157), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-03-04 09:37:45,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 1171 transitions. [2025-03-04 09:37:45,038 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 1171 transitions. Word has length 52 [2025-03-04 09:37:45,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:37:45,039 INFO L471 AbstractCegarLoop]: Abstraction has 1075 states and 1171 transitions. [2025-03-04 09:37:45,040 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 09:37:45,040 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 1171 transitions. [2025-03-04 09:37:45,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2025-03-04 09:37:45,040 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:37:45,040 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:37:45,048 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-03-04 09:37:45,240 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 09:37:45,240 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-04 09:37:45,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:37:45,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1504217941, now seen corresponding path program 1 times [2025-03-04 09:37:45,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:37:45,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2038036116] [2025-03-04 09:37:45,241 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:37:45,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:37:45,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:37:45,243 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 09:37:45,244 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 09:37:45,337 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-03-04 09:37:45,372 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-03-04 09:37:45,372 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:37:45,372 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:37:45,377 INFO L256 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-04 09:37:45,379 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:37:45,385 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-04 09:37:45,386 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-04 09:37:45,386 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-04 09:37:45,391 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 09:37:45,433 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-04 09:37:45,433 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 09:37:45,464 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 09:37:45,464 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:37:45,464 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:37:45,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038036116] [2025-03-04 09:37:45,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038036116] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:37:45,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:37:45,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-04 09:37:45,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630018489] [2025-03-04 09:37:45,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:37:45,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 09:37:45,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:37:45,465 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 09:37:45,465 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-03-04 09:37:45,465 INFO L87 Difference]: Start difference. First operand 1075 states and 1171 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:37:45,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:37:45,710 INFO L93 Difference]: Finished difference Result 1742 states and 1874 transitions. [2025-03-04 09:37:45,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 09:37:45,711 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2025-03-04 09:37:45,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:37:45,718 INFO L225 Difference]: With dead ends: 1742 [2025-03-04 09:37:45,718 INFO L226 Difference]: Without dead ends: 1739 [2025-03-04 09:37:45,718 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 53 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 09:37:45,718 INFO L435 NwaCegarLoop]: 840 mSDtfsCounter, 1610 mSDsluCounter, 2526 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1618 SdHoareTripleChecker+Valid, 3366 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-04 09:37:45,719 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1618 Valid, 3366 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-04 09:37:45,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1739 states. [2025-03-04 09:37:45,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1739 to 1024. [2025-03-04 09:37:45,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1024 states, 667 states have (on average 1.6581709145427286) internal successors, (1106), 1015 states have internal predecessors, (1106), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-03-04 09:37:45,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 1118 transitions. [2025-03-04 09:37:45,728 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 1118 transitions. Word has length 58 [2025-03-04 09:37:45,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:37:45,728 INFO L471 AbstractCegarLoop]: Abstraction has 1024 states and 1118 transitions. [2025-03-04 09:37:45,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:37:45,729 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 1118 transitions. [2025-03-04 09:37:45,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2025-03-04 09:37:45,729 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:37:45,729 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 09:37:45,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2025-03-04 09:37:45,929 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 09:37:45,930 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr427REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-04 09:37:45,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:37:45,930 INFO L85 PathProgramCache]: Analyzing trace with hash 194711564, now seen corresponding path program 1 times [2025-03-04 09:37:45,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:37:45,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1093055296] [2025-03-04 09:37:45,930 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:37:45,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:37:45,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:37:45,932 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 09:37:45,933 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 09:37:46,032 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 60 statements into 1 equivalence classes. [2025-03-04 09:37:46,097 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 60 of 60 statements. [2025-03-04 09:37:46,097 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:37:46,097 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:37:46,105 INFO L256 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-04 09:37:46,107 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:37:46,112 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 09:37:46,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-04 09:37:46,398 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 09:37:46,406 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-04 09:37:46,406 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 09:37:46,408 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 09:37:46,408 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:37:46,408 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:37:46,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093055296] [2025-03-04 09:37:46,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1093055296] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:37:46,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:37:46,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:37:46,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359133784] [2025-03-04 09:37:46,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:37:46,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 09:37:46,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:37:46,409 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 09:37:46,409 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:37:46,409 INFO L87 Difference]: Start difference. First operand 1024 states and 1118 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 09:37:48,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:37:48,209 INFO L93 Difference]: Finished difference Result 1350 states and 1468 transitions. [2025-03-04 09:37:48,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 09:37:48,210 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 09:37:48,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:37:48,212 INFO L225 Difference]: With dead ends: 1350 [2025-03-04 09:37:48,212 INFO L226 Difference]: Without dead ends: 1350 [2025-03-04 09:37:48,212 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 09:37:48,213 INFO L435 NwaCegarLoop]: 310 mSDtfsCounter, 1110 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 1305 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1115 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 1347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-03-04 09:37:48,213 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1115 Valid, 689 Invalid, 1347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1305 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-03-04 09:37:48,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1350 states. [2025-03-04 09:37:48,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1350 to 949. [2025-03-04 09:37:48,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 949 states, 630 states have (on average 1.5777777777777777) internal successors, (994), 940 states have internal predecessors, (994), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-03-04 09:37:48,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1006 transitions. [2025-03-04 09:37:48,222 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1006 transitions. Word has length 60 [2025-03-04 09:37:48,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:37:48,222 INFO L471 AbstractCegarLoop]: Abstraction has 949 states and 1006 transitions. [2025-03-04 09:37:48,222 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 09:37:48,222 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1006 transitions. [2025-03-04 09:37:48,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-03-04 09:37:48,222 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:37:48,222 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 09:37:48,232 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 09:37:48,422 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 09:37:48,423 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr420REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-04 09:37:48,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:37:48,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1863326824, now seen corresponding path program 1 times [2025-03-04 09:37:48,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:37:48,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1127816209] [2025-03-04 09:37:48,423 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:37:48,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:37:48,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:37:48,425 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 09:37:48,426 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 09:37:48,539 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-03-04 09:37:48,598 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-03-04 09:37:48,598 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:37:48,598 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:37:48,608 INFO L256 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-04 09:37:48,610 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:37:48,614 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 09:37:48,623 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 09:37:48,639 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 09:37:48,646 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 09:37:48,647 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:37:48,647 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:37:48,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127816209] [2025-03-04 09:37:48,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127816209] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:37:48,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:37:48,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:37:48,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379795523] [2025-03-04 09:37:48,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:37:48,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 09:37:48,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:37:48,648 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 09:37:48,648 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:37:48,648 INFO L87 Difference]: Start difference. First operand 949 states and 1006 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 09:37:49,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:37:49,829 INFO L93 Difference]: Finished difference Result 948 states and 1005 transitions. [2025-03-04 09:37:49,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 09:37:49,830 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 09:37:49,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:37:49,832 INFO L225 Difference]: With dead ends: 948 [2025-03-04 09:37:49,832 INFO L226 Difference]: Without dead ends: 948 [2025-03-04 09:37:49,832 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 09:37:49,832 INFO L435 NwaCegarLoop]: 820 mSDtfsCounter, 2 mSDsluCounter, 1298 mSDsCounter, 0 mSdLazyCounter, 1169 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2118 SdHoareTripleChecker+Invalid, 1170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-04 09:37:49,832 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2118 Invalid, 1170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1169 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-04 09:37:49,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 948 states. [2025-03-04 09:37:49,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 948 to 948. [2025-03-04 09:37:49,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 948 states, 630 states have (on average 1.5761904761904761) internal successors, (993), 939 states have internal predecessors, (993), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-03-04 09:37:49,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1005 transitions. [2025-03-04 09:37:49,848 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1005 transitions. Word has length 65 [2025-03-04 09:37:49,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:37:49,848 INFO L471 AbstractCegarLoop]: Abstraction has 948 states and 1005 transitions. [2025-03-04 09:37:49,848 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 09:37:49,849 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1005 transitions. [2025-03-04 09:37:49,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-03-04 09:37:49,849 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:37:49,849 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 09:37:49,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2025-03-04 09:37:50,049 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 09:37:50,050 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr421REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-04 09:37:50,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:37:50,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1863326823, now seen corresponding path program 1 times [2025-03-04 09:37:50,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:37:50,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [546285925] [2025-03-04 09:37:50,051 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:37:50,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:37:50,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:37:50,053 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 09:37:50,054 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 09:37:50,173 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-03-04 09:37:50,235 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-03-04 09:37:50,235 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:37:50,235 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:37:50,243 INFO L256 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-04 09:37:50,244 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:37:50,252 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 09:37:50,265 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 09:37:50,268 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 09:37:50,296 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 09:37:50,309 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 09:37:50,309 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:37:50,309 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:37:50,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546285925] [2025-03-04 09:37:50,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546285925] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:37:50,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:37:50,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:37:50,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756860759] [2025-03-04 09:37:50,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:37:50,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 09:37:50,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:37:50,310 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 09:37:50,310 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:37:50,310 INFO L87 Difference]: Start difference. First operand 948 states and 1005 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 09:37:51,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:37:51,769 INFO L93 Difference]: Finished difference Result 947 states and 1004 transitions. [2025-03-04 09:37:51,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 09:37:51,770 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 09:37:51,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:37:51,771 INFO L225 Difference]: With dead ends: 947 [2025-03-04 09:37:51,771 INFO L226 Difference]: Without dead ends: 947 [2025-03-04 09:37:51,771 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 09:37:51,771 INFO L435 NwaCegarLoop]: 820 mSDtfsCounter, 1 mSDsluCounter, 1321 mSDsCounter, 0 mSdLazyCounter, 1143 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2141 SdHoareTripleChecker+Invalid, 1144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-04 09:37:51,772 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2141 Invalid, 1144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1143 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-04 09:37:51,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 947 states. [2025-03-04 09:37:51,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 947 to 947. [2025-03-04 09:37:51,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 947 states, 629 states have (on average 1.5771065182829889) internal successors, (992), 938 states have internal predecessors, (992), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-03-04 09:37:51,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 947 states to 947 states and 1004 transitions. [2025-03-04 09:37:51,778 INFO L78 Accepts]: Start accepts. Automaton has 947 states and 1004 transitions. Word has length 65 [2025-03-04 09:37:51,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:37:51,778 INFO L471 AbstractCegarLoop]: Abstraction has 947 states and 1004 transitions. [2025-03-04 09:37:51,778 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 09:37:51,778 INFO L276 IsEmpty]: Start isEmpty. Operand 947 states and 1004 transitions. [2025-03-04 09:37:51,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2025-03-04 09:37:51,778 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:37:51,778 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 09:37:51,788 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 09:37:51,979 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 09:37:51,979 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr416REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-04 09:37:51,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:37:51,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1948725003, now seen corresponding path program 1 times [2025-03-04 09:37:51,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:37:51,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1763825056] [2025-03-04 09:37:51,980 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:37:51,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:37:51,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:37:51,982 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 09:37:51,984 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 09:37:52,118 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 73 statements into 1 equivalence classes. [2025-03-04 09:37:52,187 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 73 of 73 statements. [2025-03-04 09:37:52,187 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:37:52,187 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:37:52,195 INFO L256 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-04 09:37:52,198 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:37:52,205 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 09:37:52,245 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 09:37:52,254 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 09:37:52,254 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:37:52,254 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:37:52,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763825056] [2025-03-04 09:37:52,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1763825056] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:37:52,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:37:52,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-04 09:37:52,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203632688] [2025-03-04 09:37:52,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:37:52,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-04 09:37:52,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:37:52,255 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-04 09:37:52,255 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-04 09:37:52,256 INFO L87 Difference]: Start difference. First operand 947 states and 1004 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 09:37:53,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:37:53,950 INFO L93 Difference]: Finished difference Result 959 states and 1019 transitions. [2025-03-04 09:37:53,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-04 09:37:53,951 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 09:37:53,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:37:53,954 INFO L225 Difference]: With dead ends: 959 [2025-03-04 09:37:53,954 INFO L226 Difference]: Without dead ends: 959 [2025-03-04 09:37:53,955 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 09:37:53,956 INFO L435 NwaCegarLoop]: 806 mSDtfsCounter, 12 mSDsluCounter, 2556 mSDsCounter, 0 mSdLazyCounter, 1560 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 3362 SdHoareTripleChecker+Invalid, 1566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-03-04 09:37:53,956 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 3362 Invalid, 1566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1560 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-03-04 09:37:53,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2025-03-04 09:37:53,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 953. [2025-03-04 09:37:53,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 953 states, 634 states have (on average 1.5757097791798107) internal successors, (999), 943 states have internal predecessors, (999), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) [2025-03-04 09:37:53,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 953 states to 953 states and 1014 transitions. [2025-03-04 09:37:53,973 INFO L78 Accepts]: Start accepts. Automaton has 953 states and 1014 transitions. Word has length 73 [2025-03-04 09:37:53,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:37:53,974 INFO L471 AbstractCegarLoop]: Abstraction has 953 states and 1014 transitions. [2025-03-04 09:37:53,974 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 09:37:53,975 INFO L276 IsEmpty]: Start isEmpty. Operand 953 states and 1014 transitions. [2025-03-04 09:37:53,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2025-03-04 09:37:53,975 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:37:53,975 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 09:37:53,986 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 09:37:54,176 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 09:37:54,176 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr417REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-04 09:37:54,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:37:54,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1948725002, now seen corresponding path program 1 times [2025-03-04 09:37:54,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:37:54,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [888988827] [2025-03-04 09:37:54,177 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:37:54,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:37:54,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:37:54,178 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 09:37:54,180 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 09:37:54,297 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 73 statements into 1 equivalence classes. [2025-03-04 09:37:54,354 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 73 of 73 statements. [2025-03-04 09:37:54,354 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:37:54,354 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:37:54,363 INFO L256 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:37:54,364 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:37:54,374 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 09:37:54,374 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:37:54,375 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:37:54,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888988827] [2025-03-04 09:37:54,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [888988827] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:37:54,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:37:54,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:37:54,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115636815] [2025-03-04 09:37:54,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:37:54,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:37:54,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:37:54,375 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:37:54,375 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:37:54,375 INFO L87 Difference]: Start difference. First operand 953 states and 1014 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 09:37:54,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:37:54,397 INFO L93 Difference]: Finished difference Result 950 states and 1008 transitions. [2025-03-04 09:37:54,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:37:54,397 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 09:37:54,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:37:54,399 INFO L225 Difference]: With dead ends: 950 [2025-03-04 09:37:54,399 INFO L226 Difference]: Without dead ends: 950 [2025-03-04 09:37:54,400 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 09:37:54,400 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 09:37:54,400 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 09:37:54,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 950 states. [2025-03-04 09:37:54,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 950 to 950. [2025-03-04 09:37:54,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 950 states, 631 states have (on average 1.5768621236133122) internal successors, (995), 941 states have internal predecessors, (995), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2025-03-04 09:37:54,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1008 transitions. [2025-03-04 09:37:54,416 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1008 transitions. Word has length 73 [2025-03-04 09:37:54,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:37:54,416 INFO L471 AbstractCegarLoop]: Abstraction has 950 states and 1008 transitions. [2025-03-04 09:37:54,416 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 09:37:54,416 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1008 transitions. [2025-03-04 09:37:54,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2025-03-04 09:37:54,416 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:37:54,417 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 09:37:54,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2025-03-04 09:37:54,617 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 09:37:54,617 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr416REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-04 09:37:54,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:37:54,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1958995447, now seen corresponding path program 1 times [2025-03-04 09:37:54,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:37:54,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1980968689] [2025-03-04 09:37:54,619 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:37:54,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:37:54,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:37:54,622 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 09:37:54,626 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 09:37:54,747 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 74 statements into 1 equivalence classes. [2025-03-04 09:37:54,813 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 74 of 74 statements. [2025-03-04 09:37:54,813 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:37:54,813 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:37:54,822 INFO L256 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 09:37:54,824 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:37:54,845 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 09:37:54,845 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:37:54,891 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 09:37:54,891 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:37:54,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980968689] [2025-03-04 09:37:54,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1980968689] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 09:37:54,891 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 09:37:54,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2025-03-04 09:37:54,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114523978] [2025-03-04 09:37:54,892 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 09:37:54,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-04 09:37:54,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:37:54,892 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-04 09:37:54,892 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-03-04 09:37:54,893 INFO L87 Difference]: Start difference. First operand 950 states and 1008 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 09:37:54,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:37:54,991 INFO L93 Difference]: Finished difference Result 962 states and 1025 transitions. [2025-03-04 09:37:54,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-04 09:37:54,992 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 09:37:54,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:37:54,993 INFO L225 Difference]: With dead ends: 962 [2025-03-04 09:37:54,994 INFO L226 Difference]: Without dead ends: 962 [2025-03-04 09:37:54,994 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 09:37:54,995 INFO L435 NwaCegarLoop]: 820 mSDtfsCounter, 7 mSDsluCounter, 3268 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 4088 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 09:37:54,995 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 4088 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 09:37:54,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 962 states. [2025-03-04 09:37:55,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 962 to 960. [2025-03-04 09:37:55,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 960 states, 640 states have (on average 1.578125) internal successors, (1010), 950 states have internal predecessors, (1010), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2025-03-04 09:37:55,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 1023 transitions. [2025-03-04 09:37:55,005 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 1023 transitions. Word has length 74 [2025-03-04 09:37:55,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:37:55,005 INFO L471 AbstractCegarLoop]: Abstraction has 960 states and 1023 transitions. [2025-03-04 09:37:55,005 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 09:37:55,005 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 1023 transitions. [2025-03-04 09:37:55,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2025-03-04 09:37:55,005 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:37:55,006 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 09:37:55,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2025-03-04 09:37:55,206 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 09:37:55,206 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr416REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-04 09:37:55,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:37:55,207 INFO L85 PathProgramCache]: Analyzing trace with hash -126418571, now seen corresponding path program 2 times [2025-03-04 09:37:55,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:37:55,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1387699900] [2025-03-04 09:37:55,207 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 09:37:55,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:37:55,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:37:55,209 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 09:37:55,210 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 09:37:55,336 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 77 statements into 2 equivalence classes. [2025-03-04 09:38:22,922 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 77 of 77 statements. [2025-03-04 09:38:22,922 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 09:38:22,922 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:38:22,940 INFO L256 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-04 09:38:22,942 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:38:23,000 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-04 09:38:23,000 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 09:38:23,013 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 09:38:23,114 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:38:23,114 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 09:38:23,138 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 09:38:23,149 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 09:38:23,150 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:38:23,198 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2025-03-04 09:38:23,198 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 09:38:23,202 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1365 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_#t~mem36#1.base| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_1365) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))) is different from false [2025-03-04 09:38:23,204 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:38:23,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387699900] [2025-03-04 09:38:23,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387699900] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 09:38:23,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [297358331] [2025-03-04 09:38:23,204 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 09:38:23,204 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-03-04 09:38:23,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2025-03-04 09:38:23,299 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 09:38:23,300 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 09:38:23,475 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 77 statements into 2 equivalence classes. [2025-03-04 09:38:24,285 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 77 of 77 statements. [2025-03-04 09:38:24,286 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 09:38:24,286 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:38:24,313 INFO L256 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-04 09:38:24,314 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:38:24,401 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 09:38:24,401 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:38:24,551 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 09:38:24,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [297358331] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 09:38:24,551 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 09:38:24,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 24 [2025-03-04 09:38:24,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865951799] [2025-03-04 09:38:24,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 09:38:24,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-04 09:38:24,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:38:24,552 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-04 09:38:24,552 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=513, Unknown=1, NotChecked=46, Total=650 [2025-03-04 09:38:24,552 INFO L87 Difference]: Start difference. First operand 960 states and 1023 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 09:38:30,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:38:30,002 INFO L93 Difference]: Finished difference Result 1340 states and 1434 transitions. [2025-03-04 09:38:30,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-03-04 09:38:30,003 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 09:38:30,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:38:30,005 INFO L225 Difference]: With dead ends: 1340 [2025-03-04 09:38:30,005 INFO L226 Difference]: Without dead ends: 1336 [2025-03-04 09:38:30,006 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=413, Invalid=2242, Unknown=1, NotChecked=100, Total=2756 [2025-03-04 09:38:30,006 INFO L435 NwaCegarLoop]: 451 mSDtfsCounter, 799 mSDsluCounter, 5849 mSDsCounter, 0 mSdLazyCounter, 5958 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 805 SdHoareTripleChecker+Valid, 6300 SdHoareTripleChecker+Invalid, 5984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 5958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2025-03-04 09:38:30,006 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [805 Valid, 6300 Invalid, 5984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 5958 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2025-03-04 09:38:30,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1336 states. [2025-03-04 09:38:30,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1336 to 968. [2025-03-04 09:38:30,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 968 states, 649 states have (on average 1.5731895223420647) internal successors, (1021), 958 states have internal predecessors, (1021), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2025-03-04 09:38:30,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 1034 transitions. [2025-03-04 09:38:30,017 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 1034 transitions. Word has length 77 [2025-03-04 09:38:30,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:38:30,017 INFO L471 AbstractCegarLoop]: Abstraction has 968 states and 1034 transitions. [2025-03-04 09:38:30,017 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 09:38:30,017 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 1034 transitions. [2025-03-04 09:38:30,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2025-03-04 09:38:30,018 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:38:30,018 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 09:38:30,055 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2025-03-04 09:38:30,227 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 09:38:30,419 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 09:38:30,419 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr417REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-04 09:38:30,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:38:30,419 INFO L85 PathProgramCache]: Analyzing trace with hash 57102902, now seen corresponding path program 1 times [2025-03-04 09:38:30,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:38:30,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1747635632] [2025-03-04 09:38:30,420 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:38:30,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:38:30,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:38:30,422 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 09:38:30,422 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 09:38:30,563 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-03-04 09:38:30,636 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-03-04 09:38:30,636 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:38:30,636 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:38:30,646 INFO L256 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-04 09:38:30,648 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:38:30,733 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 09:38:30,734 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:38:31,055 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 09:38:31,056 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:38:31,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747635632] [2025-03-04 09:38:31,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747635632] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 09:38:31,056 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 09:38:31,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2025-03-04 09:38:31,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295075158] [2025-03-04 09:38:31,056 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 09:38:31,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-03-04 09:38:31,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:38:31,057 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-03-04 09:38:31,057 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2025-03-04 09:38:31,057 INFO L87 Difference]: Start difference. First operand 968 states and 1034 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 09:38:32,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:38:32,085 INFO L93 Difference]: Finished difference Result 992 states and 1073 transitions. [2025-03-04 09:38:32,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-03-04 09:38:32,085 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 09:38:32,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:38:32,087 INFO L225 Difference]: With dead ends: 992 [2025-03-04 09:38:32,087 INFO L226 Difference]: Without dead ends: 986 [2025-03-04 09:38:32,087 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=728, Invalid=1434, Unknown=0, NotChecked=0, Total=2162 [2025-03-04 09:38:32,088 INFO L435 NwaCegarLoop]: 820 mSDtfsCounter, 22 mSDsluCounter, 8989 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 9809 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-04 09:38:32,088 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 9809 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-04 09:38:32,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2025-03-04 09:38:32,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 986. [2025-03-04 09:38:32,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 986 states, 667 states have (on average 1.565217391304348) internal successors, (1044), 976 states have internal predecessors, (1044), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2025-03-04 09:38:32,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 986 states to 986 states and 1057 transitions. [2025-03-04 09:38:32,095 INFO L78 Accepts]: Start accepts. Automaton has 986 states and 1057 transitions. Word has length 83 [2025-03-04 09:38:32,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:38:32,095 INFO L471 AbstractCegarLoop]: Abstraction has 986 states and 1057 transitions. [2025-03-04 09:38:32,095 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 09:38:32,096 INFO L276 IsEmpty]: Start isEmpty. Operand 986 states and 1057 transitions. [2025-03-04 09:38:32,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2025-03-04 09:38:32,096 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:38:32,096 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 09:38:32,107 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 09:38:32,296 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 09:38:32,296 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr417REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2025-03-04 09:38:32,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:38:32,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1329249354, now seen corresponding path program 2 times [2025-03-04 09:38:32,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:38:32,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [677195789] [2025-03-04 09:38:32,297 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 09:38:32,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:38:32,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:38:32,299 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 09:38:32,300 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 09:38:32,447 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 95 statements into 2 equivalence classes. [2025-03-04 09:38:47,472 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 95 of 95 statements. [2025-03-04 09:38:47,472 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 09:38:47,472 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:38:47,493 INFO L256 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 64 conjuncts are in the unsatisfiable core [2025-03-04 09:38:47,497 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:38:47,578 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 09:38:47,592 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-04 09:38:47,593 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 09:38:47,610 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 09:38:47,615 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 09:38:47,692 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 09:38:47,695 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 09:38:47,982 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:38:47,983 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 09:38:47,989 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 09:38:48,019 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 09:38:48,022 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 09:38:48,039 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 09:38:48,039 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:38:48,370 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_1991 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1992 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv20 32) (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_1991) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_1992) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_1991 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_1991) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv16 32) .cse1) (bvadd (_ bv20 32) .cse1)))))) is different from false [2025-03-04 09:38:48,375 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:38:48,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677195789] [2025-03-04 09:38:48,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677195789] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 09:38:48,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [183899359] [2025-03-04 09:38:48,375 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 09:38:48,375 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-03-04 09:38:48,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2025-03-04 09:38:48,377 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 09:38:48,377 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 09:38:48,604 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 95 statements into 2 equivalence classes. [2025-03-04 09:38:49,458 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 95 of 95 statements. [2025-03-04 09:38:49,458 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 09:38:49,458 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:38:49,485 INFO L256 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-03-04 09:38:49,487 INFO L279 TraceCheckSpWp]: Computing forward predicates...