./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9e43379b3f2624d77eec1084820c7c07499f5ec4432514ab066d4f5cf96eeebc --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 00:52:24,614 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 00:52:24,664 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-09 00:52:24,667 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 00:52:24,667 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 00:52:24,684 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 00:52:24,685 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 00:52:24,685 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 00:52:24,686 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 00:52:24,686 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 00:52:24,686 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 00:52:24,686 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 00:52:24,686 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 00:52:24,687 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 00:52:24,687 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 00:52:24,687 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 00:52:24,687 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 00:52:24,688 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 00:52:24,688 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 00:52:24,688 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 00:52:24,688 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-09 00:52:24,688 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-09 00:52:24,688 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-09 00:52:24,688 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 00:52:24,688 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-09 00:52:24,688 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 00:52:24,688 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 00:52:24,688 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 00:52:24,688 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 00:52:24,689 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 00:52:24,689 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 00:52:24,689 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 00:52:24,689 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 00:52:24,689 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 00:52:24,689 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 00:52:24,689 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 00:52:24,689 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 00:52:24,689 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 00:52:24,689 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 00:52:24,689 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 00:52:24,689 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 00:52:24,689 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 00:52:24,689 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 -> 9e43379b3f2624d77eec1084820c7c07499f5ec4432514ab066d4f5cf96eeebc [2025-03-09 00:52:24,917 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 00:52:24,925 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 00:52:24,927 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 00:52:24,928 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 00:52:24,928 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 00:52:24,929 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i [2025-03-09 00:52:26,028 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/126ffe01c/03f45b7246af4970863f2988375f52ee/FLAGb60baaeee [2025-03-09 00:52:26,312 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 00:52:26,313 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i [2025-03-09 00:52:26,325 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/126ffe01c/03f45b7246af4970863f2988375f52ee/FLAGb60baaeee [2025-03-09 00:52:26,336 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/126ffe01c/03f45b7246af4970863f2988375f52ee [2025-03-09 00:52:26,337 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 00:52:26,338 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 00:52:26,339 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 00:52:26,339 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 00:52:26,342 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 00:52:26,343 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 12:52:26" (1/1) ... [2025-03-09 00:52:26,343 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8e13d49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:52:26, skipping insertion in model container [2025-03-09 00:52:26,343 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 12:52:26" (1/1) ... [2025-03-09 00:52:26,373 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 00:52:26,602 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:52:26,631 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:52:26,634 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:52:26,638 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:52:26,645 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:52:26,669 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:52:26,670 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:52:26,671 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:52:26,672 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:52:26,673 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:52:26,674 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:52:26,675 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:52:26,675 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:52:26,678 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:52:26,679 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:52:26,680 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:52:26,681 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:52:26,681 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:52:26,682 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:52:26,684 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:52:26,689 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 00:52:26,703 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2025-03-09 00:52:26,703 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6beced25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:52:26, skipping insertion in model container [2025-03-09 00:52:26,704 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 00:52:26,704 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-03-09 00:52:26,707 INFO L158 Benchmark]: Toolchain (without parser) took 366.31ms. Allocated memory is still 142.6MB. Free memory was 102.7MB in the beginning and 83.2MB in the end (delta: 19.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-09 00:52:26,708 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 201.3MB. Free memory is still 125.3MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 00:52:26,708 INFO L158 Benchmark]: CACSL2BoogieTranslator took 364.68ms. Allocated memory is still 142.6MB. Free memory was 102.7MB in the beginning and 83.2MB in the end (delta: 19.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-09 00:52:26,709 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 201.3MB. Free memory is still 125.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 364.68ms. Allocated memory is still 142.6MB. Free memory was 102.7MB in the beginning and 83.2MB in the end (delta: 19.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 727]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9e43379b3f2624d77eec1084820c7c07499f5ec4432514ab066d4f5cf96eeebc --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 00:52:28,397 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 00:52:28,482 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-03-09 00:52:28,491 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 00:52:28,491 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 00:52:28,510 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 00:52:28,512 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 00:52:28,512 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 00:52:28,512 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 00:52:28,513 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 00:52:28,513 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 00:52:28,513 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 00:52:28,513 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 00:52:28,514 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 00:52:28,514 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 00:52:28,514 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 00:52:28,514 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 00:52:28,514 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 00:52:28,514 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 00:52:28,515 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 00:52:28,515 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-09 00:52:28,515 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-09 00:52:28,515 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-09 00:52:28,515 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 00:52:28,515 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-09 00:52:28,515 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-09 00:52:28,515 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-09 00:52:28,515 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 00:52:28,515 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 00:52:28,515 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 00:52:28,516 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 00:52:28,516 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 00:52:28,516 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 00:52:28,516 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 00:52:28,516 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 00:52:28,516 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 00:52:28,516 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 00:52:28,516 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 00:52:28,516 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-09 00:52:28,516 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-09 00:52:28,517 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 00:52:28,517 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 00:52:28,517 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 00:52:28,517 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 00:52:28,517 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 -> 9e43379b3f2624d77eec1084820c7c07499f5ec4432514ab066d4f5cf96eeebc [2025-03-09 00:52:28,758 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 00:52:28,766 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 00:52:28,767 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 00:52:28,768 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 00:52:28,768 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 00:52:28,769 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i [2025-03-09 00:52:29,895 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abc5f21a5/2e20d692255b4a5e875e35fc21f388fb/FLAG7cf70f5f4 [2025-03-09 00:52:30,146 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 00:52:30,147 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i [2025-03-09 00:52:30,161 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abc5f21a5/2e20d692255b4a5e875e35fc21f388fb/FLAG7cf70f5f4 [2025-03-09 00:52:30,457 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abc5f21a5/2e20d692255b4a5e875e35fc21f388fb [2025-03-09 00:52:30,459 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 00:52:30,460 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 00:52:30,461 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 00:52:30,461 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 00:52:30,464 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 00:52:30,465 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 12:52:30" (1/1) ... [2025-03-09 00:52:30,465 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d747508 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:52:30, skipping insertion in model container [2025-03-09 00:52:30,465 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 12:52:30" (1/1) ... [2025-03-09 00:52:30,504 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 00:52:30,761 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:52:30,792 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:52:30,796 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:52:30,801 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:52:30,808 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:52:30,832 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:52:30,834 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:52:30,836 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:52:30,838 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:52:30,840 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:52:30,844 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:52:30,844 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:52:30,845 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:52:30,848 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:52:30,848 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:52:30,850 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:52:30,851 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:52:30,852 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:52:30,852 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:52:30,855 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:52:30,858 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 00:52:30,869 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-03-09 00:52:30,876 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 00:52:30,902 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:52:30,913 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:52:30,919 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:52:30,920 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:52:30,926 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:52:30,939 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:52:30,939 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:52:30,940 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:52:30,940 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:52:30,942 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:52:30,942 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:52:30,942 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:52:30,943 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:52:30,944 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:52:30,944 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:52:30,945 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:52:30,946 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:52:30,950 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:52:30,950 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:52:30,952 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:52:30,954 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 00:52:30,957 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 00:52:31,013 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 00:52:31,039 INFO L204 MainTranslator]: Completed translation [2025-03-09 00:52:31,039 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:52:31 WrapperNode [2025-03-09 00:52:31,040 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 00:52:31,040 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 00:52:31,040 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 00:52:31,040 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 00:52:31,045 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:52:31" (1/1) ... [2025-03-09 00:52:31,068 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:52:31" (1/1) ... [2025-03-09 00:52:31,108 INFO L138 Inliner]: procedures = 179, calls = 323, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1152 [2025-03-09 00:52:31,110 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 00:52:31,110 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 00:52:31,110 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 00:52:31,110 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 00:52:31,116 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:52:31" (1/1) ... [2025-03-09 00:52:31,117 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:52:31" (1/1) ... [2025-03-09 00:52:31,140 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:52:31" (1/1) ... [2025-03-09 00:52:31,210 INFO L175 MemorySlicer]: Split 301 memory accesses to 3 slices as follows [2, 265, 34]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 62 writes are split as follows [0, 58, 4]. [2025-03-09 00:52:31,210 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:52:31" (1/1) ... [2025-03-09 00:52:31,211 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:52:31" (1/1) ... [2025-03-09 00:52:31,253 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:52:31" (1/1) ... [2025-03-09 00:52:31,258 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:52:31" (1/1) ... [2025-03-09 00:52:31,265 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:52:31" (1/1) ... [2025-03-09 00:52:31,270 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:52:31" (1/1) ... [2025-03-09 00:52:31,281 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 00:52:31,283 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 00:52:31,283 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 00:52:31,283 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 00:52:31,284 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:52:31" (1/1) ... [2025-03-09 00:52:31,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 00:52:31,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:52:31,323 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-09 00:52:31,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-09 00:52:31,356 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2025-03-09 00:52:31,356 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2025-03-09 00:52:31,356 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2025-03-09 00:52:31,356 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2025-03-09 00:52:31,356 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2025-03-09 00:52:31,356 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-03-09 00:52:31,357 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-03-09 00:52:31,357 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2025-03-09 00:52:31,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-03-09 00:52:31,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-03-09 00:52:31,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2025-03-09 00:52:31,357 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-03-09 00:52:31,357 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-03-09 00:52:31,357 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2025-03-09 00:52:31,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-09 00:52:31,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 00:52:31,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-09 00:52:31,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-09 00:52:31,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-09 00:52:31,359 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-09 00:52:31,359 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-09 00:52:31,359 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-09 00:52:31,359 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-09 00:52:31,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-09 00:52:31,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-03-09 00:52:31,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-03-09 00:52:31,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2025-03-09 00:52:31,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-09 00:52:31,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-03-09 00:52:31,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2025-03-09 00:52:31,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 00:52:31,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 00:52:31,524 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 00:52:31,526 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 00:52:34,369 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L713: call ULTIMATE.dealloc(main_~#i~0#1.base, main_~#i~0#1.offset);havoc main_~#i~0#1.base, main_~#i~0#1.offset; [2025-03-09 00:52:34,463 INFO L? ?]: Removed 1292 outVars from TransFormulas that were not future-live. [2025-03-09 00:52:34,463 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 00:52:34,494 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 00:52:34,494 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 00:52:34,494 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 12:52:34 BoogieIcfgContainer [2025-03-09 00:52:34,494 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 00:52:34,496 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 00:52:34,498 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 00:52:34,501 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 00:52:34,501 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 12:52:30" (1/3) ... [2025-03-09 00:52:34,502 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aa7b2bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 12:52:34, skipping insertion in model container [2025-03-09 00:52:34,502 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:52:31" (2/3) ... [2025-03-09 00:52:34,502 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aa7b2bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 12:52:34, skipping insertion in model container [2025-03-09 00:52:34,502 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 12:52:34" (3/3) ... [2025-03-09 00:52:34,503 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test7-2.i [2025-03-09 00:52:34,517 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 00:52:34,518 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_SFH_test7-2.i that has 5 procedures, 1255 locations, 1 initial locations, 41 loop locations, and 628 error locations. [2025-03-09 00:52:34,570 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 00:52:34,579 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;@3acba30a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 00:52:34,579 INFO L334 AbstractCegarLoop]: Starting to check reachability of 628 error locations. [2025-03-09 00:52:34,584 INFO L276 IsEmpty]: Start isEmpty. Operand has 1245 states, 612 states have (on average 2.2450980392156863) internal successors, (1374), 1238 states have internal predecessors, (1374), 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) [2025-03-09 00:52:34,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-03-09 00:52:34,587 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:52:34,590 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-03-09 00:52:34,590 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr625REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-09 00:52:34,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:52:34,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1411020, now seen corresponding path program 1 times [2025-03-09 00:52:34,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:52:34,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [493062584] [2025-03-09 00:52:34,601 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:52:34,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:52:34,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:52:34,603 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:52:34,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-09 00:52:34,721 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-09 00:52:34,730 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-09 00:52:34,730 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:52:34,730 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:52:34,732 INFO L256 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 00:52:34,735 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:52:34,757 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-09 00:52:34,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:52:34,773 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:52:34,773 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:52:34,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493062584] [2025-03-09 00:52:34,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493062584] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:52:34,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:52:34,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 00:52:34,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631974507] [2025-03-09 00:52:34,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:52:34,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 00:52:34,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:52:34,795 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 00:52:34,796 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:52:34,799 INFO L87 Difference]: Start difference. First operand has 1245 states, 612 states have (on average 2.2450980392156863) internal successors, (1374), 1238 states have internal predecessors, (1374), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:52:36,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:52:36,391 INFO L93 Difference]: Finished difference Result 1414 states and 1490 transitions. [2025-03-09 00:52:36,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 00:52:36,393 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2025-03-09 00:52:36,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:52:36,405 INFO L225 Difference]: With dead ends: 1414 [2025-03-09 00:52:36,406 INFO L226 Difference]: Without dead ends: 1412 [2025-03-09 00:52:36,408 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:52:36,410 INFO L435 NwaCegarLoop]: 738 mSDtfsCounter, 1143 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 738 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1146 SdHoareTripleChecker+Valid, 898 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-03-09 00:52:36,410 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1146 Valid, 898 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 738 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-03-09 00:52:36,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1412 states. [2025-03-09 00:52:36,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1412 to 1226. [2025-03-09 00:52:36,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1226 states, 612 states have (on average 2.099673202614379) internal successors, (1285), 1220 states have internal predecessors, (1285), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-09 00:52:36,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1226 states to 1226 states and 1293 transitions. [2025-03-09 00:52:36,500 INFO L78 Accepts]: Start accepts. Automaton has 1226 states and 1293 transitions. Word has length 3 [2025-03-09 00:52:36,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:52:36,501 INFO L471 AbstractCegarLoop]: Abstraction has 1226 states and 1293 transitions. [2025-03-09 00:52:36,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:52:36,502 INFO L276 IsEmpty]: Start isEmpty. Operand 1226 states and 1293 transitions. [2025-03-09 00:52:36,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-03-09 00:52:36,502 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:52:36,502 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-03-09 00:52:36,513 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-09 00:52:36,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:52:36,703 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr626REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-09 00:52:36,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:52:36,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1411021, now seen corresponding path program 1 times [2025-03-09 00:52:36,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:52:36,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [771401115] [2025-03-09 00:52:36,704 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:52:36,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:52:36,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:52:36,706 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:52:36,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-09 00:52:36,804 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-09 00:52:36,807 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-09 00:52:36,807 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:52:36,807 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:52:36,808 INFO L256 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 00:52:36,810 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:52:36,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-09 00:52:36,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:52:36,829 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:52:36,829 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:52:36,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771401115] [2025-03-09 00:52:36,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771401115] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:52:36,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:52:36,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 00:52:36,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533275349] [2025-03-09 00:52:36,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:52:36,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 00:52:36,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:52:36,830 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 00:52:36,830 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:52:36,830 INFO L87 Difference]: Start difference. First operand 1226 states and 1293 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:52:38,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:52:38,967 INFO L93 Difference]: Finished difference Result 1819 states and 1929 transitions. [2025-03-09 00:52:38,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 00:52:38,967 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2025-03-09 00:52:38,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:52:38,972 INFO L225 Difference]: With dead ends: 1819 [2025-03-09 00:52:38,972 INFO L226 Difference]: Without dead ends: 1819 [2025-03-09 00:52:38,972 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:52:38,973 INFO L435 NwaCegarLoop]: 1001 mSDtfsCounter, 633 mSDsluCounter, 675 mSDsCounter, 0 mSdLazyCounter, 888 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 1676 SdHoareTripleChecker+Invalid, 894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2025-03-09 00:52:38,973 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [633 Valid, 1676 Invalid, 894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 888 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2025-03-09 00:52:38,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1819 states. [2025-03-09 00:52:38,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1819 to 1433. [2025-03-09 00:52:38,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1433 states, 820 states have (on average 2.080487804878049) internal successors, (1706), 1427 states have internal predecessors, (1706), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-09 00:52:38,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1433 states to 1433 states and 1714 transitions. [2025-03-09 00:52:38,995 INFO L78 Accepts]: Start accepts. Automaton has 1433 states and 1714 transitions. Word has length 3 [2025-03-09 00:52:38,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:52:38,995 INFO L471 AbstractCegarLoop]: Abstraction has 1433 states and 1714 transitions. [2025-03-09 00:52:38,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:52:38,996 INFO L276 IsEmpty]: Start isEmpty. Operand 1433 states and 1714 transitions. [2025-03-09 00:52:38,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-03-09 00:52:38,996 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:52:38,996 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:52:39,002 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-09 00:52:39,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:52:39,197 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr622REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-09 00:52:39,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:52:39,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1773160360, now seen corresponding path program 1 times [2025-03-09 00:52:39,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:52:39,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1256350876] [2025-03-09 00:52:39,198 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:52:39,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:52:39,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:52:39,200 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:52:39,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-09 00:52:39,288 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 00:52:39,297 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 00:52:39,297 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:52:39,297 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:52:39,298 INFO L256 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-09 00:52:39,300 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:52:39,305 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-09 00:52:39,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-09 00:52:39,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-03-09 00:52:39,372 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-09 00:52:39,372 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-03-09 00:52:39,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:52:39,404 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:52:39,404 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:52:39,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256350876] [2025-03-09 00:52:39,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256350876] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:52:39,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:52:39,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 00:52:39,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336485369] [2025-03-09 00:52:39,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:52:39,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:52:39,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:52:39,405 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:52:39,405 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:52:39,405 INFO L87 Difference]: Start difference. First operand 1433 states and 1714 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:52:41,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:52:41,437 INFO L93 Difference]: Finished difference Result 1613 states and 1905 transitions. [2025-03-09 00:52:41,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:52:41,438 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2025-03-09 00:52:41,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:52:41,442 INFO L225 Difference]: With dead ends: 1613 [2025-03-09 00:52:41,442 INFO L226 Difference]: Without dead ends: 1613 [2025-03-09 00:52:41,442 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:52:41,443 INFO L435 NwaCegarLoop]: 421 mSDtfsCounter, 2571 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 1095 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2574 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 1119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-03-09 00:52:41,443 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2574 Valid, 513 Invalid, 1119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1095 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-03-09 00:52:41,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1613 states. [2025-03-09 00:52:41,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1613 to 1214. [2025-03-09 00:52:41,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1214 states, 612 states have (on average 2.0784313725490198) internal successors, (1272), 1208 states have internal predecessors, (1272), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-09 00:52:41,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1214 states to 1214 states and 1280 transitions. [2025-03-09 00:52:41,462 INFO L78 Accepts]: Start accepts. Automaton has 1214 states and 1280 transitions. Word has length 7 [2025-03-09 00:52:41,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:52:41,463 INFO L471 AbstractCegarLoop]: Abstraction has 1214 states and 1280 transitions. [2025-03-09 00:52:41,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:52:41,463 INFO L276 IsEmpty]: Start isEmpty. Operand 1214 states and 1280 transitions. [2025-03-09 00:52:41,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-03-09 00:52:41,463 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:52:41,463 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:52:41,470 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-09 00:52:41,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:52:41,667 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr619REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-09 00:52:41,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:52:41,667 INFO L85 PathProgramCache]: Analyzing trace with hash -866602378, now seen corresponding path program 1 times [2025-03-09 00:52:41,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:52:41,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [160921826] [2025-03-09 00:52:41,668 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:52:41,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:52:41,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:52:41,671 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:52:41,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-09 00:52:41,757 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 00:52:41,765 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 00:52:41,766 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:52:41,766 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:52:41,767 INFO L256 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 00:52:41,768 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:52:41,777 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-09 00:52:41,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:52:41,788 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:52:41,788 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:52:41,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160921826] [2025-03-09 00:52:41,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [160921826] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:52:41,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:52:41,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 00:52:41,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384490782] [2025-03-09 00:52:41,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:52:41,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 00:52:41,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:52:41,789 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 00:52:41,789 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:52:41,789 INFO L87 Difference]: Start difference. First operand 1214 states and 1280 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:52:43,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:52:43,131 INFO L93 Difference]: Finished difference Result 1547 states and 1643 transitions. [2025-03-09 00:52:43,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 00:52:43,131 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-03-09 00:52:43,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:52:43,136 INFO L225 Difference]: With dead ends: 1547 [2025-03-09 00:52:43,136 INFO L226 Difference]: Without dead ends: 1547 [2025-03-09 00:52:43,137 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:52:43,137 INFO L435 NwaCegarLoop]: 1141 mSDtfsCounter, 920 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 853 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 1486 SdHoareTripleChecker+Invalid, 903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-09 00:52:43,138 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [923 Valid, 1486 Invalid, 903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 853 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-09 00:52:43,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1547 states. [2025-03-09 00:52:43,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1547 to 1167. [2025-03-09 00:52:43,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1167 states, 612 states have (on average 2.0016339869281046) internal successors, (1225), 1161 states have internal predecessors, (1225), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-09 00:52:43,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 1233 transitions. [2025-03-09 00:52:43,157 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 1233 transitions. Word has length 8 [2025-03-09 00:52:43,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:52:43,157 INFO L471 AbstractCegarLoop]: Abstraction has 1167 states and 1233 transitions. [2025-03-09 00:52:43,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:52:43,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 1233 transitions. [2025-03-09 00:52:43,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-03-09 00:52:43,158 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:52:43,158 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:52:43,166 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-09 00:52:43,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:52:43,359 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr620REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-09 00:52:43,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:52:43,359 INFO L85 PathProgramCache]: Analyzing trace with hash -866602377, now seen corresponding path program 1 times [2025-03-09 00:52:43,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:52:43,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [800092371] [2025-03-09 00:52:43,359 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:52:43,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:52:43,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:52:43,361 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:52:43,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-09 00:52:43,450 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 00:52:43,459 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 00:52:43,459 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:52:43,459 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:52:43,461 INFO L256 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 00:52:43,463 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:52:43,469 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-09 00:52:43,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:52:43,485 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:52:43,485 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:52:43,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800092371] [2025-03-09 00:52:43,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800092371] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:52:43,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:52:43,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 00:52:43,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215493698] [2025-03-09 00:52:43,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:52:43,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 00:52:43,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:52:43,486 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 00:52:43,486 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:52:43,486 INFO L87 Difference]: Start difference. First operand 1167 states and 1233 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:52:45,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:52:45,138 INFO L93 Difference]: Finished difference Result 1637 states and 1736 transitions. [2025-03-09 00:52:45,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 00:52:45,138 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-03-09 00:52:45,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:52:45,142 INFO L225 Difference]: With dead ends: 1637 [2025-03-09 00:52:45,142 INFO L226 Difference]: Without dead ends: 1637 [2025-03-09 00:52:45,142 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:52:45,144 INFO L435 NwaCegarLoop]: 1333 mSDtfsCounter, 688 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 822 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 1852 SdHoareTripleChecker+Invalid, 835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-03-09 00:52:45,144 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [688 Valid, 1852 Invalid, 835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 822 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-03-09 00:52:45,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1637 states. [2025-03-09 00:52:45,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1637 to 1194. [2025-03-09 00:52:45,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1194 states, 649 states have (on average 1.9861325115562403) internal successors, (1289), 1188 states have internal predecessors, (1289), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-09 00:52:45,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 1297 transitions. [2025-03-09 00:52:45,165 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 1297 transitions. Word has length 8 [2025-03-09 00:52:45,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:52:45,166 INFO L471 AbstractCegarLoop]: Abstraction has 1194 states and 1297 transitions. [2025-03-09 00:52:45,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:52:45,166 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 1297 transitions. [2025-03-09 00:52:45,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-03-09 00:52:45,166 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:52:45,166 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:52:45,175 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-09 00:52:45,371 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:52:45,371 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr295REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-09 00:52:45,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:52:45,372 INFO L85 PathProgramCache]: Analyzing trace with hash -796701006, now seen corresponding path program 1 times [2025-03-09 00:52:45,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:52:45,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [433353230] [2025-03-09 00:52:45,372 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:52:45,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:52:45,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:52:45,374 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:52:45,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-09 00:52:45,465 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-09 00:52:45,478 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-09 00:52:45,478 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:52:45,478 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:52:45,479 INFO L256 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 00:52:45,481 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:52:45,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:52:45,518 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:52:45,518 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:52:45,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [433353230] [2025-03-09 00:52:45,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [433353230] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:52:45,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:52:45,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 00:52:45,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120005472] [2025-03-09 00:52:45,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:52:45,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:52:45,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:52:45,519 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:52:45,519 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:52:45,519 INFO L87 Difference]: Start difference. First operand 1194 states and 1297 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:52:47,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:52:47,009 INFO L93 Difference]: Finished difference Result 1361 states and 1473 transitions. [2025-03-09 00:52:47,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:52:47,009 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2025-03-09 00:52:47,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:52:47,012 INFO L225 Difference]: With dead ends: 1361 [2025-03-09 00:52:47,012 INFO L226 Difference]: Without dead ends: 1361 [2025-03-09 00:52:47,012 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:52:47,013 INFO L435 NwaCegarLoop]: 693 mSDtfsCounter, 1141 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 1221 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1144 SdHoareTripleChecker+Valid, 1434 SdHoareTripleChecker+Invalid, 1251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-03-09 00:52:47,013 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1144 Valid, 1434 Invalid, 1251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1221 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-03-09 00:52:47,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1361 states. [2025-03-09 00:52:47,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1361 to 1171. [2025-03-09 00:52:47,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1171 states, 649 states have (on average 1.950693374422188) internal successors, (1266), 1165 states have internal predecessors, (1266), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-09 00:52:47,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1171 states to 1171 states and 1274 transitions. [2025-03-09 00:52:47,035 INFO L78 Accepts]: Start accepts. Automaton has 1171 states and 1274 transitions. Word has length 12 [2025-03-09 00:52:47,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:52:47,036 INFO L471 AbstractCegarLoop]: Abstraction has 1171 states and 1274 transitions. [2025-03-09 00:52:47,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:52:47,036 INFO L276 IsEmpty]: Start isEmpty. Operand 1171 states and 1274 transitions. [2025-03-09 00:52:47,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-03-09 00:52:47,036 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:52:47,036 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:52:47,043 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-09 00:52:47,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:52:47,240 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr296REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-09 00:52:47,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:52:47,240 INFO L85 PathProgramCache]: Analyzing trace with hash -796701005, now seen corresponding path program 1 times [2025-03-09 00:52:47,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:52:47,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [746353838] [2025-03-09 00:52:47,241 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:52:47,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:52:47,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:52:47,243 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:52:47,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-09 00:52:47,332 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-09 00:52:47,342 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-09 00:52:47,343 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:52:47,343 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:52:47,344 INFO L256 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-09 00:52:47,345 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:52:47,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-09 00:52:47,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:52:47,411 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:52:47,411 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:52:47,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746353838] [2025-03-09 00:52:47,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [746353838] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:52:47,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:52:47,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 00:52:47,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267978646] [2025-03-09 00:52:47,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:52:47,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:52:47,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:52:47,412 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:52:47,412 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:52:47,412 INFO L87 Difference]: Start difference. First operand 1171 states and 1274 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:52:49,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:52:49,398 INFO L93 Difference]: Finished difference Result 1712 states and 1850 transitions. [2025-03-09 00:52:49,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:52:49,399 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2025-03-09 00:52:49,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:52:49,403 INFO L225 Difference]: With dead ends: 1712 [2025-03-09 00:52:49,403 INFO L226 Difference]: Without dead ends: 1712 [2025-03-09 00:52:49,404 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:52:49,404 INFO L435 NwaCegarLoop]: 940 mSDtfsCounter, 612 mSDsluCounter, 1209 mSDsCounter, 0 mSdLazyCounter, 1425 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 612 SdHoareTripleChecker+Valid, 2149 SdHoareTripleChecker+Invalid, 1440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-03-09 00:52:49,404 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [612 Valid, 2149 Invalid, 1440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1425 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-03-09 00:52:49,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1712 states. [2025-03-09 00:52:49,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1712 to 1360. [2025-03-09 00:52:49,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1360 states, 838 states have (on average 1.9367541766109786) internal successors, (1623), 1354 states have internal predecessors, (1623), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-09 00:52:49,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 1631 transitions. [2025-03-09 00:52:49,422 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 1631 transitions. Word has length 12 [2025-03-09 00:52:49,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:52:49,422 INFO L471 AbstractCegarLoop]: Abstraction has 1360 states and 1631 transitions. [2025-03-09 00:52:49,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:52:49,422 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 1631 transitions. [2025-03-09 00:52:49,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-03-09 00:52:49,423 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:52:49,423 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:52:49,430 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-09 00:52:49,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:52:49,624 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr104REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-09 00:52:49,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:52:49,624 INFO L85 PathProgramCache]: Analyzing trace with hash -809603474, now seen corresponding path program 1 times [2025-03-09 00:52:49,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:52:49,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1467371481] [2025-03-09 00:52:49,625 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:52:49,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:52:49,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:52:49,626 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:52:49,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-09 00:52:49,718 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-09 00:52:49,728 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-09 00:52:49,729 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:52:49,729 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:52:49,730 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 00:52:49,731 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:52:49,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:52:49,775 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:52:49,775 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:52:49,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467371481] [2025-03-09 00:52:49,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1467371481] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:52:49,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:52:49,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 00:52:49,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697781691] [2025-03-09 00:52:49,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:52:49,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 00:52:49,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:52:49,776 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 00:52:49,776 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:52:49,777 INFO L87 Difference]: Start difference. First operand 1360 states and 1631 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:52:50,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:52:50,031 INFO L93 Difference]: Finished difference Result 2071 states and 2547 transitions. [2025-03-09 00:52:50,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 00:52:50,032 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2025-03-09 00:52:50,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:52:50,036 INFO L225 Difference]: With dead ends: 2071 [2025-03-09 00:52:50,036 INFO L226 Difference]: Without dead ends: 2071 [2025-03-09 00:52:50,036 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:52:50,037 INFO L435 NwaCegarLoop]: 1373 mSDtfsCounter, 601 mSDsluCounter, 1075 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 601 SdHoareTripleChecker+Valid, 2448 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-09 00:52:50,037 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [601 Valid, 2448 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-09 00:52:50,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2071 states. [2025-03-09 00:52:50,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2071 to 1723. [2025-03-09 00:52:50,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1723 states, 1201 states have (on average 1.9050791007493755) internal successors, (2288), 1717 states have internal predecessors, (2288), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-09 00:52:50,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1723 states to 1723 states and 2296 transitions. [2025-03-09 00:52:50,060 INFO L78 Accepts]: Start accepts. Automaton has 1723 states and 2296 transitions. Word has length 12 [2025-03-09 00:52:50,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:52:50,060 INFO L471 AbstractCegarLoop]: Abstraction has 1723 states and 2296 transitions. [2025-03-09 00:52:50,061 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:52:50,061 INFO L276 IsEmpty]: Start isEmpty. Operand 1723 states and 2296 transitions. [2025-03-09 00:52:50,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-03-09 00:52:50,061 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:52:50,061 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:52:50,068 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-09 00:52:50,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:52:50,262 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-09 00:52:50,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:52:50,263 INFO L85 PathProgramCache]: Analyzing trace with hash 673374616, now seen corresponding path program 1 times [2025-03-09 00:52:50,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:52:50,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [472421167] [2025-03-09 00:52:50,263 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:52:50,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:52:50,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:52:50,265 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:52:50,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-09 00:52:50,364 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-09 00:52:50,374 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-09 00:52:50,374 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:52:50,374 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:52:50,375 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 00:52:50,377 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:52:50,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:52:50,424 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:52:50,424 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:52:50,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472421167] [2025-03-09 00:52:50,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472421167] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:52:50,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:52:50,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:52:50,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368939912] [2025-03-09 00:52:50,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:52:50,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:52:50,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:52:50,424 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:52:50,424 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:52:50,425 INFO L87 Difference]: Start difference. First operand 1723 states and 2296 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:52:50,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:52:50,987 INFO L93 Difference]: Finished difference Result 2072 states and 2547 transitions. [2025-03-09 00:52:50,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:52:50,987 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2025-03-09 00:52:50,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:52:50,991 INFO L225 Difference]: With dead ends: 2072 [2025-03-09 00:52:50,992 INFO L226 Difference]: Without dead ends: 2072 [2025-03-09 00:52:50,992 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:52:50,992 INFO L435 NwaCegarLoop]: 1372 mSDtfsCounter, 606 mSDsluCounter, 2341 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 606 SdHoareTripleChecker+Valid, 3713 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-09 00:52:50,992 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [606 Valid, 3713 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-09 00:52:50,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2072 states. [2025-03-09 00:52:51,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2072 to 1725. [2025-03-09 00:52:51,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1725 states, 1203 states have (on average 1.9027431421446384) internal successors, (2289), 1719 states have internal predecessors, (2289), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-09 00:52:51,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1725 states to 1725 states and 2297 transitions. [2025-03-09 00:52:51,014 INFO L78 Accepts]: Start accepts. Automaton has 1725 states and 2297 transitions. Word has length 13 [2025-03-09 00:52:51,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:52:51,014 INFO L471 AbstractCegarLoop]: Abstraction has 1725 states and 2297 transitions. [2025-03-09 00:52:51,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:52:51,014 INFO L276 IsEmpty]: Start isEmpty. Operand 1725 states and 2297 transitions. [2025-03-09 00:52:51,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-03-09 00:52:51,015 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:52:51,016 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:52:51,022 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-03-09 00:52:51,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:52:51,216 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr272REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-09 00:52:51,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:52:51,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1072028596, now seen corresponding path program 1 times [2025-03-09 00:52:51,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:52:51,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [253333866] [2025-03-09 00:52:51,217 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:52:51,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:52:51,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:52:51,219 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:52:51,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-09 00:52:51,304 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-09 00:52:51,314 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-09 00:52:51,314 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:52:51,314 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:52:51,315 INFO L256 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 00:52:51,316 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:52:51,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:52:51,326 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:52:51,326 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:52:51,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253333866] [2025-03-09 00:52:51,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253333866] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:52:51,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:52:51,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:52:51,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833435913] [2025-03-09 00:52:51,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:52:51,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:52:51,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:52:51,327 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:52:51,327 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:52:51,327 INFO L87 Difference]: Start difference. First operand 1725 states and 2297 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:52:51,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:52:51,376 INFO L93 Difference]: Finished difference Result 1653 states and 2174 transitions. [2025-03-09 00:52:51,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 00:52:51,376 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2025-03-09 00:52:51,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:52:51,380 INFO L225 Difference]: With dead ends: 1653 [2025-03-09 00:52:51,380 INFO L226 Difference]: Without dead ends: 1653 [2025-03-09 00:52:51,380 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:52:51,380 INFO L435 NwaCegarLoop]: 1112 mSDtfsCounter, 45 mSDsluCounter, 2201 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 3313 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-09 00:52:51,380 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 3313 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-09 00:52:51,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1653 states. [2025-03-09 00:52:51,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1653 to 1653. [2025-03-09 00:52:51,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1653 states, 1150 states have (on average 1.8834782608695653) internal successors, (2166), 1647 states have internal predecessors, (2166), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-09 00:52:51,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1653 states to 1653 states and 2174 transitions. [2025-03-09 00:52:51,403 INFO L78 Accepts]: Start accepts. Automaton has 1653 states and 2174 transitions. Word has length 13 [2025-03-09 00:52:51,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:52:51,403 INFO L471 AbstractCegarLoop]: Abstraction has 1653 states and 2174 transitions. [2025-03-09 00:52:51,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:52:51,403 INFO L276 IsEmpty]: Start isEmpty. Operand 1653 states and 2174 transitions. [2025-03-09 00:52:51,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-03-09 00:52:51,403 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:52:51,403 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:52:51,410 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-03-09 00:52:51,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:52:51,604 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-09 00:52:51,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:52:51,604 INFO L85 PathProgramCache]: Analyzing trace with hash -639889847, now seen corresponding path program 1 times [2025-03-09 00:52:51,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:52:51,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [147697961] [2025-03-09 00:52:51,605 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:52:51,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:52:51,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:52:51,606 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:52:51,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-09 00:52:51,714 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-09 00:52:51,725 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-09 00:52:51,725 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:52:51,725 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:52:51,726 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 00:52:51,727 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:52:51,736 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-09 00:52:51,736 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-09 00:52:51,737 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-09 00:52:51,740 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2025-03-09 00:52:51,771 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-09 00:52:51,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2025-03-09 00:52:51,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:52:51,789 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:52:51,789 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:52:51,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147697961] [2025-03-09 00:52:51,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [147697961] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:52:51,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:52:51,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:52:51,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509591706] [2025-03-09 00:52:51,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:52:51,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:52:51,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:52:51,789 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:52:51,789 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:52:51,789 INFO L87 Difference]: Start difference. First operand 1653 states and 2174 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) [2025-03-09 00:52:51,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:52:51,930 INFO L93 Difference]: Finished difference Result 2373 states and 2731 transitions. [2025-03-09 00:52:51,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:52:51,931 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 [2025-03-09 00:52:51,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:52:51,935 INFO L225 Difference]: With dead ends: 2373 [2025-03-09 00:52:51,935 INFO L226 Difference]: Without dead ends: 2373 [2025-03-09 00:52:51,935 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 [2025-03-09 00:52:51,936 INFO L435 NwaCegarLoop]: 1113 mSDtfsCounter, 1066 mSDsluCounter, 2217 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1069 SdHoareTripleChecker+Valid, 3330 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-09 00:52:51,936 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1069 Valid, 3330 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-09 00:52:51,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2373 states. [2025-03-09 00:52:51,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2373 to 1344. [2025-03-09 00:52:51,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1344 states, 841 states have (on average 1.896551724137931) internal successors, (1595), 1338 states have internal predecessors, (1595), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-09 00:52:51,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1344 states to 1344 states and 1603 transitions. [2025-03-09 00:52:51,952 INFO L78 Accepts]: Start accepts. Automaton has 1344 states and 1603 transitions. Word has length 14 [2025-03-09 00:52:51,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:52:51,952 INFO L471 AbstractCegarLoop]: Abstraction has 1344 states and 1603 transitions. [2025-03-09 00:52:51,952 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) [2025-03-09 00:52:51,952 INFO L276 IsEmpty]: Start isEmpty. Operand 1344 states and 1603 transitions. [2025-03-09 00:52:51,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-03-09 00:52:51,953 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:52:51,953 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:52:51,959 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-03-09 00:52:52,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:52:52,154 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr611REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-09 00:52:52,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:52:52,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1325205508, now seen corresponding path program 1 times [2025-03-09 00:52:52,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:52:52,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2015497749] [2025-03-09 00:52:52,155 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:52:52,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:52:52,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:52:52,157 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:52:52,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-09 00:52:52,258 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-09 00:52:52,277 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-09 00:52:52,277 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:52:52,277 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:52:52,281 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 00:52:52,282 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:52:52,287 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-09 00:52:52,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:52:52,313 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:52:52,313 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:52:52,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015497749] [2025-03-09 00:52:52,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015497749] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:52:52,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:52:52,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 00:52:52,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145418915] [2025-03-09 00:52:52,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:52:52,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:52:52,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:52:52,314 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:52:52,314 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:52:52,314 INFO L87 Difference]: Start difference. First operand 1344 states and 1603 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:52:53,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:52:53,744 INFO L93 Difference]: Finished difference Result 1715 states and 2068 transitions. [2025-03-09 00:52:53,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:52:53,745 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 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 17 [2025-03-09 00:52:53,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:52:53,748 INFO L225 Difference]: With dead ends: 1715 [2025-03-09 00:52:53,748 INFO L226 Difference]: Without dead ends: 1715 [2025-03-09 00:52:53,748 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:52:53,749 INFO L435 NwaCegarLoop]: 677 mSDtfsCounter, 885 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 1295 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 1479 SdHoareTripleChecker+Invalid, 1322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-09 00:52:53,749 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [888 Valid, 1479 Invalid, 1322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1295 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-09 00:52:53,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1715 states. [2025-03-09 00:52:53,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1715 to 1321. [2025-03-09 00:52:53,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1321 states, 841 states have (on average 1.8418549346016646) internal successors, (1549), 1315 states have internal predecessors, (1549), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-09 00:52:53,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1321 states to 1321 states and 1557 transitions. [2025-03-09 00:52:53,760 INFO L78 Accepts]: Start accepts. Automaton has 1321 states and 1557 transitions. Word has length 17 [2025-03-09 00:52:53,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:52:53,761 INFO L471 AbstractCegarLoop]: Abstraction has 1321 states and 1557 transitions. [2025-03-09 00:52:53,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:52:53,761 INFO L276 IsEmpty]: Start isEmpty. Operand 1321 states and 1557 transitions. [2025-03-09 00:52:53,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-03-09 00:52:53,761 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:52:53,761 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:52:53,771 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-03-09 00:52:53,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:52:53,962 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr612REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-09 00:52:53,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:52:53,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1325205507, now seen corresponding path program 1 times [2025-03-09 00:52:53,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:52:53,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [259029012] [2025-03-09 00:52:53,962 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:52:53,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:52:53,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:52:53,964 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:52:53,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-09 00:52:54,072 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-09 00:52:54,093 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-09 00:52:54,093 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:52:54,093 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:52:54,097 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-09 00:52:54,099 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:52:54,109 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-09 00:52:54,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:52:54,158 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:52:54,158 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:52:54,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259029012] [2025-03-09 00:52:54,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [259029012] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:52:54,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:52:54,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 00:52:54,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354001626] [2025-03-09 00:52:54,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:52:54,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:52:54,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:52:54,159 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:52:54,159 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:52:54,159 INFO L87 Difference]: Start difference. First operand 1321 states and 1557 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:52:56,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:52:56,047 INFO L93 Difference]: Finished difference Result 1956 states and 2310 transitions. [2025-03-09 00:52:56,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:52:56,048 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 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 17 [2025-03-09 00:52:56,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:52:56,052 INFO L225 Difference]: With dead ends: 1956 [2025-03-09 00:52:56,052 INFO L226 Difference]: Without dead ends: 1956 [2025-03-09 00:52:56,052 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:52:56,053 INFO L435 NwaCegarLoop]: 1272 mSDtfsCounter, 726 mSDsluCounter, 1283 mSDsCounter, 0 mSdLazyCounter, 1480 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 2555 SdHoareTripleChecker+Invalid, 1502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-03-09 00:52:56,053 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [726 Valid, 2555 Invalid, 1502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1480 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-03-09 00:52:56,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1956 states. [2025-03-09 00:52:56,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1956 to 1435. [2025-03-09 00:52:56,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1435 states, 955 states have (on average 1.7664921465968586) internal successors, (1687), 1429 states have internal predecessors, (1687), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-09 00:52:56,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1435 states to 1435 states and 1695 transitions. [2025-03-09 00:52:56,065 INFO L78 Accepts]: Start accepts. Automaton has 1435 states and 1695 transitions. Word has length 17 [2025-03-09 00:52:56,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:52:56,065 INFO L471 AbstractCegarLoop]: Abstraction has 1435 states and 1695 transitions. [2025-03-09 00:52:56,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:52:56,065 INFO L276 IsEmpty]: Start isEmpty. Operand 1435 states and 1695 transitions. [2025-03-09 00:52:56,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2025-03-09 00:52:56,065 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:52:56,065 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] [2025-03-09 00:52:56,074 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-03-09 00:52:56,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:52:56,266 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr612REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-09 00:52:56,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:52:56,266 INFO L85 PathProgramCache]: Analyzing trace with hash -553119500, now seen corresponding path program 1 times [2025-03-09 00:52:56,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:52:56,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [306566270] [2025-03-09 00:52:56,267 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:52:56,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:52:56,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:52:56,269 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:52:56,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-09 00:52:56,371 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-03-09 00:52:56,419 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-03-09 00:52:56,420 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:52:56,420 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:52:56,429 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-09 00:52:56,430 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:52:56,444 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-09 00:52:56,581 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:52:56,581 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 00:52:56,907 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:52:56,908 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:52:56,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306566270] [2025-03-09 00:52:56,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306566270] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 00:52:56,908 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-09 00:52:56,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2025-03-09 00:52:56,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166714272] [2025-03-09 00:52:56,908 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-09 00:52:56,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-09 00:52:56,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:52:56,908 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-09 00:52:56,908 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-09 00:52:56,908 INFO L87 Difference]: Start difference. First operand 1435 states and 1695 transitions. Second operand has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:53:03,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:53:03,430 INFO L93 Difference]: Finished difference Result 2312 states and 2800 transitions. [2025-03-09 00:53:03,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-09 00:53:03,431 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 8 states have internal predecessors, (68), 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 36 [2025-03-09 00:53:03,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:53:03,435 INFO L225 Difference]: With dead ends: 2312 [2025-03-09 00:53:03,435 INFO L226 Difference]: Without dead ends: 2312 [2025-03-09 00:53:03,435 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2025-03-09 00:53:03,435 INFO L435 NwaCegarLoop]: 1299 mSDtfsCounter, 2132 mSDsluCounter, 3698 mSDsCounter, 0 mSdLazyCounter, 3734 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2133 SdHoareTripleChecker+Valid, 4997 SdHoareTripleChecker+Invalid, 3761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 3734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2025-03-09 00:53:03,435 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2133 Valid, 4997 Invalid, 3761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 3734 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2025-03-09 00:53:03,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2312 states. [2025-03-09 00:53:03,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2312 to 1599. [2025-03-09 00:53:03,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1599 states, 1119 states have (on average 1.7149240393208223) internal successors, (1919), 1593 states have internal predecessors, (1919), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-09 00:53:03,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1599 states to 1599 states and 1927 transitions. [2025-03-09 00:53:03,450 INFO L78 Accepts]: Start accepts. Automaton has 1599 states and 1927 transitions. Word has length 36 [2025-03-09 00:53:03,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:53:03,450 INFO L471 AbstractCegarLoop]: Abstraction has 1599 states and 1927 transitions. [2025-03-09 00:53:03,450 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:53:03,450 INFO L276 IsEmpty]: Start isEmpty. Operand 1599 states and 1927 transitions. [2025-03-09 00:53:03,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2025-03-09 00:53:03,453 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:53:03,453 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] [2025-03-09 00:53:03,463 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-03-09 00:53:03,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:53:03,654 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr530REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-09 00:53:03,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:53:03,654 INFO L85 PathProgramCache]: Analyzing trace with hash 501488164, now seen corresponding path program 1 times [2025-03-09 00:53:03,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:53:03,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1860024486] [2025-03-09 00:53:03,655 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:53:03,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:53:03,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:53:03,657 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:53:03,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-03-09 00:53:03,772 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-03-09 00:53:03,819 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-03-09 00:53:03,820 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:53:03,820 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:53:03,826 INFO L256 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 00:53:03,827 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:53:03,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:53:03,849 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:53:03,849 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:53:03,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860024486] [2025-03-09 00:53:03,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860024486] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:53:03,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:53:03,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:53:03,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163100248] [2025-03-09 00:53:03,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:53:03,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:53:03,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:53:03,849 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:53:03,849 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:53:03,850 INFO L87 Difference]: Start difference. First operand 1599 states and 1927 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:53:03,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:53:03,902 INFO L93 Difference]: Finished difference Result 1288 states and 1491 transitions. [2025-03-09 00:53:03,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 00:53:03,904 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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 51 [2025-03-09 00:53:03,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:53:03,907 INFO L225 Difference]: With dead ends: 1288 [2025-03-09 00:53:03,907 INFO L226 Difference]: Without dead ends: 1288 [2025-03-09 00:53:03,907 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:53:03,907 INFO L435 NwaCegarLoop]: 1049 mSDtfsCounter, 56 mSDsluCounter, 2025 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 3074 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 [2025-03-09 00:53:03,907 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 3074 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-09 00:53:03,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1288 states. [2025-03-09 00:53:03,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1288 to 1286. [2025-03-09 00:53:03,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1286 states, 829 states have (on average 1.7864897466827503) internal successors, (1481), 1280 states have internal predecessors, (1481), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-09 00:53:03,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1286 states to 1286 states and 1489 transitions. [2025-03-09 00:53:03,920 INFO L78 Accepts]: Start accepts. Automaton has 1286 states and 1489 transitions. Word has length 51 [2025-03-09 00:53:03,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:53:03,921 INFO L471 AbstractCegarLoop]: Abstraction has 1286 states and 1489 transitions. [2025-03-09 00:53:03,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:53:03,921 INFO L276 IsEmpty]: Start isEmpty. Operand 1286 states and 1489 transitions. [2025-03-09 00:53:03,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2025-03-09 00:53:03,921 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:53:03,921 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] [2025-03-09 00:53:03,930 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-03-09 00:53:04,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:53:04,121 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr530REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-09 00:53:04,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:53:04,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1298620196, now seen corresponding path program 1 times [2025-03-09 00:53:04,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:53:04,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1040715922] [2025-03-09 00:53:04,122 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:53:04,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:53:04,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:53:04,124 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:53:04,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-03-09 00:53:04,237 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 59 statements into 1 equivalence classes. [2025-03-09 00:53:04,314 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 59 of 59 statements. [2025-03-09 00:53:04,314 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:53:04,314 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:53:04,323 INFO L256 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-09 00:53:04,326 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:53:04,333 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-09 00:53:04,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-09 00:53:04,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-03-09 00:53:04,639 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-09 00:53:04,639 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-03-09 00:53:04,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:53:04,642 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:53:04,642 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:53:04,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040715922] [2025-03-09 00:53:04,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040715922] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:53:04,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:53:04,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:53:04,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880178199] [2025-03-09 00:53:04,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:53:04,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 00:53:04,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:53:04,643 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 00:53:04,643 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:53:04,643 INFO L87 Difference]: Start difference. First operand 1286 states and 1489 transitions. Second operand has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:53:06,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:53:06,414 INFO L93 Difference]: Finished difference Result 1634 states and 1954 transitions. [2025-03-09 00:53:06,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 00:53:06,414 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 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 59 [2025-03-09 00:53:06,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:53:06,417 INFO L225 Difference]: With dead ends: 1634 [2025-03-09 00:53:06,417 INFO L226 Difference]: Without dead ends: 1634 [2025-03-09 00:53:06,417 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2025-03-09 00:53:06,418 INFO L435 NwaCegarLoop]: 510 mSDtfsCounter, 1829 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 1378 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1832 SdHoareTripleChecker+Valid, 982 SdHoareTripleChecker+Invalid, 1425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-03-09 00:53:06,418 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1832 Valid, 982 Invalid, 1425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1378 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-03-09 00:53:06,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1634 states. [2025-03-09 00:53:06,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1634 to 1211. [2025-03-09 00:53:06,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1211 states, 792 states have (on average 1.7285353535353536) internal successors, (1369), 1205 states have internal predecessors, (1369), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-09 00:53:06,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1211 states to 1211 states and 1377 transitions. [2025-03-09 00:53:06,429 INFO L78 Accepts]: Start accepts. Automaton has 1211 states and 1377 transitions. Word has length 59 [2025-03-09 00:53:06,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:53:06,429 INFO L471 AbstractCegarLoop]: Abstraction has 1211 states and 1377 transitions. [2025-03-09 00:53:06,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:53:06,429 INFO L276 IsEmpty]: Start isEmpty. Operand 1211 states and 1377 transitions. [2025-03-09 00:53:06,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2025-03-09 00:53:06,430 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:53:06,430 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] [2025-03-09 00:53:06,440 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-03-09 00:53:06,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:53:06,630 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr523REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-09 00:53:06,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:53:06,631 INFO L85 PathProgramCache]: Analyzing trace with hash -379593052, now seen corresponding path program 1 times [2025-03-09 00:53:06,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:53:06,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [334392893] [2025-03-09 00:53:06,631 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:53:06,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:53:06,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:53:06,635 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:53:06,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-03-09 00:53:06,754 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes. [2025-03-09 00:53:06,811 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements. [2025-03-09 00:53:06,811 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:53:06,811 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:53:06,821 INFO L256 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-09 00:53:06,823 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:53:06,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-09 00:53:06,852 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-09 00:53:06,871 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-03-09 00:53:06,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:53:06,880 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:53:06,880 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:53:06,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334392893] [2025-03-09 00:53:06,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334392893] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:53:06,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:53:06,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:53:06,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755125071] [2025-03-09 00:53:06,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:53:06,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 00:53:06,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:53:06,883 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 00:53:06,883 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:53:06,883 INFO L87 Difference]: Start difference. First operand 1211 states and 1377 transitions. Second operand has 5 states, 4 states have (on average 16.0) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:53:08,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:53:08,331 INFO L93 Difference]: Finished difference Result 1210 states and 1376 transitions. [2025-03-09 00:53:08,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 00:53:08,331 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.0) internal successors, (64), 5 states have internal predecessors, (64), 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 64 [2025-03-09 00:53:08,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:53:08,333 INFO L225 Difference]: With dead ends: 1210 [2025-03-09 00:53:08,333 INFO L226 Difference]: Without dead ends: 1210 [2025-03-09 00:53:08,334 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-09 00:53:08,334 INFO L435 NwaCegarLoop]: 1021 mSDtfsCounter, 2 mSDsluCounter, 1600 mSDsCounter, 0 mSdLazyCounter, 1470 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2621 SdHoareTripleChecker+Invalid, 1471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-09 00:53:08,334 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2621 Invalid, 1471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1470 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-09 00:53:08,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2025-03-09 00:53:08,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1210. [2025-03-09 00:53:08,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1210 states, 792 states have (on average 1.7272727272727273) internal successors, (1368), 1204 states have internal predecessors, (1368), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-09 00:53:08,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1376 transitions. [2025-03-09 00:53:08,342 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1376 transitions. Word has length 64 [2025-03-09 00:53:08,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:53:08,342 INFO L471 AbstractCegarLoop]: Abstraction has 1210 states and 1376 transitions. [2025-03-09 00:53:08,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.0) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:53:08,342 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1376 transitions. [2025-03-09 00:53:08,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2025-03-09 00:53:08,343 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:53:08,343 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] [2025-03-09 00:53:08,352 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-03-09 00:53:08,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:53:08,543 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr524REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-09 00:53:08,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:53:08,544 INFO L85 PathProgramCache]: Analyzing trace with hash -379593051, now seen corresponding path program 1 times [2025-03-09 00:53:08,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:53:08,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [277369868] [2025-03-09 00:53:08,544 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:53:08,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:53:08,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:53:08,546 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:53:08,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-03-09 00:53:08,658 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes. [2025-03-09 00:53:08,711 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements. [2025-03-09 00:53:08,712 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:53:08,712 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:53:08,719 INFO L256 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-09 00:53:08,721 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:53:08,731 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-09 00:53:08,743 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-03-09 00:53:08,751 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-09 00:53:08,776 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2025-03-09 00:53:08,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:53:08,788 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:53:08,788 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:53:08,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277369868] [2025-03-09 00:53:08,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277369868] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:53:08,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:53:08,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:53:08,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518641966] [2025-03-09 00:53:08,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:53:08,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 00:53:08,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:53:08,789 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 00:53:08,789 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:53:08,790 INFO L87 Difference]: Start difference. First operand 1210 states and 1376 transitions. Second operand has 5 states, 4 states have (on average 16.0) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:53:10,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:53:10,497 INFO L93 Difference]: Finished difference Result 1209 states and 1375 transitions. [2025-03-09 00:53:10,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 00:53:10,497 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.0) internal successors, (64), 5 states have internal predecessors, (64), 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 64 [2025-03-09 00:53:10,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:53:10,499 INFO L225 Difference]: With dead ends: 1209 [2025-03-09 00:53:10,499 INFO L226 Difference]: Without dead ends: 1209 [2025-03-09 00:53:10,499 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-09 00:53:10,500 INFO L435 NwaCegarLoop]: 1021 mSDtfsCounter, 1 mSDsluCounter, 1641 mSDsCounter, 0 mSdLazyCounter, 1426 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2662 SdHoareTripleChecker+Invalid, 1427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-03-09 00:53:10,500 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2662 Invalid, 1427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1426 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-03-09 00:53:10,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1209 states. [2025-03-09 00:53:10,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1209 to 1209. [2025-03-09 00:53:10,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1209 states, 791 states have (on average 1.7281921618204803) internal successors, (1367), 1203 states have internal predecessors, (1367), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-09 00:53:10,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1209 states to 1209 states and 1375 transitions. [2025-03-09 00:53:10,508 INFO L78 Accepts]: Start accepts. Automaton has 1209 states and 1375 transitions. Word has length 64 [2025-03-09 00:53:10,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:53:10,508 INFO L471 AbstractCegarLoop]: Abstraction has 1209 states and 1375 transitions. [2025-03-09 00:53:10,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.0) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:53:10,508 INFO L276 IsEmpty]: Start isEmpty. Operand 1209 states and 1375 transitions. [2025-03-09 00:53:10,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2025-03-09 00:53:10,508 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:53:10,508 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:53:10,518 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-03-09 00:53:10,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:53:10,709 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr519REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-09 00:53:10,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:53:10,709 INFO L85 PathProgramCache]: Analyzing trace with hash 97252673, now seen corresponding path program 1 times [2025-03-09 00:53:10,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:53:10,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1409513228] [2025-03-09 00:53:10,709 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:53:10,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:53:10,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:53:10,711 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:53:10,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-03-09 00:53:10,830 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 72 statements into 1 equivalence classes. [2025-03-09 00:53:10,882 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 72 of 72 statements. [2025-03-09 00:53:10,883 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:53:10,883 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:53:10,890 INFO L256 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-09 00:53:10,892 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:53:10,897 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-09 00:53:10,933 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-03-09 00:53:10,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:53:10,940 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:53:10,940 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:53:10,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409513228] [2025-03-09 00:53:10,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409513228] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:53:10,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:53:10,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-09 00:53:10,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753140922] [2025-03-09 00:53:10,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:53:10,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-09 00:53:10,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:53:10,941 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-09 00:53:10,941 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-09 00:53:10,942 INFO L87 Difference]: Start difference. First operand 1209 states and 1375 transitions. Second operand has 7 states, 5 states have (on average 14.0) internal successors, (70), 6 states have internal predecessors, (70), 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) [2025-03-09 00:53:13,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:53:13,030 INFO L93 Difference]: Finished difference Result 1221 states and 1390 transitions. [2025-03-09 00:53:13,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-09 00:53:13,030 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 14.0) internal successors, (70), 6 states have internal predecessors, (70), 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 72 [2025-03-09 00:53:13,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:53:13,033 INFO L225 Difference]: With dead ends: 1221 [2025-03-09 00:53:13,033 INFO L226 Difference]: Without dead ends: 1221 [2025-03-09 00:53:13,033 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2025-03-09 00:53:13,033 INFO L435 NwaCegarLoop]: 1011 mSDtfsCounter, 8 mSDsluCounter, 3206 mSDsCounter, 0 mSdLazyCounter, 1915 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 4217 SdHoareTripleChecker+Invalid, 1921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-03-09 00:53:13,033 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 4217 Invalid, 1921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1915 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-03-09 00:53:13,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1221 states. [2025-03-09 00:53:13,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1221 to 1215. [2025-03-09 00:53:13,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1215 states, 796 states have (on average 1.7261306532663316) internal successors, (1374), 1208 states have internal predecessors, (1374), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2025-03-09 00:53:13,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 1385 transitions. [2025-03-09 00:53:13,043 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 1385 transitions. Word has length 72 [2025-03-09 00:53:13,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:53:13,043 INFO L471 AbstractCegarLoop]: Abstraction has 1215 states and 1385 transitions. [2025-03-09 00:53:13,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 14.0) internal successors, (70), 6 states have internal predecessors, (70), 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) [2025-03-09 00:53:13,043 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 1385 transitions. [2025-03-09 00:53:13,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2025-03-09 00:53:13,043 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:53:13,047 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:53:13,059 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-03-09 00:53:13,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:53:13,248 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr520REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-09 00:53:13,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:53:13,248 INFO L85 PathProgramCache]: Analyzing trace with hash 97252674, now seen corresponding path program 1 times [2025-03-09 00:53:13,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:53:13,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1850521136] [2025-03-09 00:53:13,249 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:53:13,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:53:13,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:53:13,251 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:53:13,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-03-09 00:53:13,388 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 72 statements into 1 equivalence classes. [2025-03-09 00:53:13,445 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 72 of 72 statements. [2025-03-09 00:53:13,446 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:53:13,446 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:53:13,454 INFO L256 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 00:53:13,455 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:53:13,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:53:13,471 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:53:13,471 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:53:13,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850521136] [2025-03-09 00:53:13,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850521136] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:53:13,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:53:13,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:53:13,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618800174] [2025-03-09 00:53:13,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:53:13,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:53:13,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:53:13,472 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:53:13,472 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:53:13,472 INFO L87 Difference]: Start difference. First operand 1215 states and 1385 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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) [2025-03-09 00:53:13,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:53:13,499 INFO L93 Difference]: Finished difference Result 1212 states and 1379 transitions. [2025-03-09 00:53:13,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:53:13,499 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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 72 [2025-03-09 00:53:13,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:53:13,501 INFO L225 Difference]: With dead ends: 1212 [2025-03-09 00:53:13,501 INFO L226 Difference]: Without dead ends: 1212 [2025-03-09 00:53:13,502 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:53:13,502 INFO L435 NwaCegarLoop]: 1021 mSDtfsCounter, 0 mSDsluCounter, 2037 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3058 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 [2025-03-09 00:53:13,502 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3058 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-09 00:53:13,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1212 states. [2025-03-09 00:53:13,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1212 to 1212. [2025-03-09 00:53:13,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1212 states, 793 states have (on average 1.7276166456494326) internal successors, (1370), 1206 states have internal predecessors, (1370), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-03-09 00:53:13,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1212 states to 1212 states and 1379 transitions. [2025-03-09 00:53:13,513 INFO L78 Accepts]: Start accepts. Automaton has 1212 states and 1379 transitions. Word has length 72 [2025-03-09 00:53:13,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:53:13,514 INFO L471 AbstractCegarLoop]: Abstraction has 1212 states and 1379 transitions. [2025-03-09 00:53:13,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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) [2025-03-09 00:53:13,514 INFO L276 IsEmpty]: Start isEmpty. Operand 1212 states and 1379 transitions. [2025-03-09 00:53:13,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2025-03-09 00:53:13,517 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:53:13,518 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] [2025-03-09 00:53:13,529 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-03-09 00:53:13,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:53:13,718 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr519REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-09 00:53:13,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:53:13,719 INFO L85 PathProgramCache]: Analyzing trace with hash 762726718, now seen corresponding path program 1 times [2025-03-09 00:53:13,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:53:13,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [246895277] [2025-03-09 00:53:13,719 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:53:13,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:53:13,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:53:13,721 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:53:13,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-03-09 00:53:13,860 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 73 statements into 1 equivalence classes. [2025-03-09 00:53:13,924 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 73 of 73 statements. [2025-03-09 00:53:13,924 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:53:13,924 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:53:13,932 INFO L256 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 00:53:13,934 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:53:13,946 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:53:13,946 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 00:53:13,988 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:53:13,989 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:53:13,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246895277] [2025-03-09 00:53:13,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [246895277] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 00:53:13,989 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-09 00:53:13,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2025-03-09 00:53:13,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978293624] [2025-03-09 00:53:13,989 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-09 00:53:13,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-09 00:53:13,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:53:13,990 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-09 00:53:13,990 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-03-09 00:53:13,990 INFO L87 Difference]: Start difference. First operand 1212 states and 1379 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 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) [2025-03-09 00:53:14,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:53:14,080 INFO L93 Difference]: Finished difference Result 1224 states and 1396 transitions. [2025-03-09 00:53:14,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-09 00:53:14,080 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 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 73 [2025-03-09 00:53:14,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:53:14,082 INFO L225 Difference]: With dead ends: 1224 [2025-03-09 00:53:14,082 INFO L226 Difference]: Without dead ends: 1224 [2025-03-09 00:53:14,083 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2025-03-09 00:53:14,083 INFO L435 NwaCegarLoop]: 1021 mSDtfsCounter, 5 mSDsluCounter, 3054 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 4075 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-09 00:53:14,083 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 4075 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-09 00:53:14,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2025-03-09 00:53:14,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 1222. [2025-03-09 00:53:14,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1222 states, 802 states have (on average 1.726932668329177) internal successors, (1385), 1215 states have internal predecessors, (1385), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-03-09 00:53:14,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 1394 transitions. [2025-03-09 00:53:14,101 INFO L78 Accepts]: Start accepts. Automaton has 1222 states and 1394 transitions. Word has length 73 [2025-03-09 00:53:14,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:53:14,101 INFO L471 AbstractCegarLoop]: Abstraction has 1222 states and 1394 transitions. [2025-03-09 00:53:14,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 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) [2025-03-09 00:53:14,101 INFO L276 IsEmpty]: Start isEmpty. Operand 1222 states and 1394 transitions. [2025-03-09 00:53:14,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2025-03-09 00:53:14,102 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:53:14,102 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] [2025-03-09 00:53:14,113 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-03-09 00:53:14,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:53:14,303 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr519REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-09 00:53:14,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:53:14,303 INFO L85 PathProgramCache]: Analyzing trace with hash -943747967, now seen corresponding path program 2 times [2025-03-09 00:53:14,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:53:14,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1904457199] [2025-03-09 00:53:14,303 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 00:53:14,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:53:14,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:53:14,305 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:53:14,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-03-09 00:53:14,437 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 76 statements into 2 equivalence classes.