./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-2.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 dfe9cedb3fb732c747a1ef802da6fccda86efe7de6f5d2fc74063f23f28dc4dd --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 09:40:06,640 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 09:40:06,697 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-04 09:40:06,703 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 09:40:06,704 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 09:40:06,724 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 09:40:06,725 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 09:40:06,725 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 09:40:06,725 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 09:40:06,726 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 09:40:06,726 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 09:40:06,726 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 09:40:06,727 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 09:40:06,727 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 09:40:06,727 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 09:40:06,727 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 09:40:06,728 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 09:40:06,728 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 09:40:06,728 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 09:40:06,728 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 09:40:06,728 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-04 09:40:06,728 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-04 09:40:06,728 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-04 09:40:06,728 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 09:40:06,728 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-04 09:40:06,728 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 09:40:06,728 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 09:40:06,728 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 09:40:06,728 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 09:40:06,729 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 09:40:06,729 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 09:40:06,729 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 09:40:06,729 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 09:40:06,729 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 09:40:06,729 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 09:40:06,729 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 09:40:06,729 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 09:40:06,729 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 09:40:06,730 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 09:40:06,730 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 09:40:06,730 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 09:40:06,730 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 09:40:06,730 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 -> dfe9cedb3fb732c747a1ef802da6fccda86efe7de6f5d2fc74063f23f28dc4dd [2025-03-04 09:40:06,948 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 09:40:06,954 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 09:40:06,957 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 09:40:06,958 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 09:40:06,958 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 09:40:06,960 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-2.i [2025-03-04 09:40:08,032 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94d57277f/832ba49c7b0f45209111ff34368d47b2/FLAGa74586c47 [2025-03-04 09:40:08,353 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 09:40:08,353 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-2.i [2025-03-04 09:40:08,371 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94d57277f/832ba49c7b0f45209111ff34368d47b2/FLAGa74586c47 [2025-03-04 09:40:08,387 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94d57277f/832ba49c7b0f45209111ff34368d47b2 [2025-03-04 09:40:08,390 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 09:40:08,393 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 09:40:08,394 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 09:40:08,394 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 09:40:08,397 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 09:40:08,398 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:40:08" (1/1) ... [2025-03-04 09:40:08,398 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d4eecc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:40:08, skipping insertion in model container [2025-03-04 09:40:08,399 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:40:08" (1/1) ... [2025-03-04 09:40:08,428 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 09:40:08,719 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:40:08,742 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:40:08,745 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:40:08,748 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:40:08,752 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:40:08,784 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:40:08,784 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:40:08,786 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:40:08,786 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:40:08,788 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:40:08,790 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:40:08,791 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:40:08,791 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:40:08,794 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:40:08,795 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:40:08,796 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:40:08,796 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:40:08,797 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:40:08,799 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:40:08,803 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:40:08,818 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2025-03-04 09:40:08,818 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@483c6c01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:40:08, skipping insertion in model container [2025-03-04 09:40:08,818 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 09:40:08,818 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-03-04 09:40:08,819 INFO L158 Benchmark]: Toolchain (without parser) took 426.34ms. Allocated memory is still 142.6MB. Free memory was 107.0MB in the beginning and 86.8MB in the end (delta: 20.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-04 09:40:08,820 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 201.3MB. Free memory is still 127.3MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 09:40:08,820 INFO L158 Benchmark]: CACSL2BoogieTranslator took 424.04ms. Allocated memory is still 142.6MB. Free memory was 107.0MB in the beginning and 86.8MB in the end (delta: 20.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-04 09:40:08,823 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 201.3MB. Free memory is still 127.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 424.04ms. Allocated memory is still 142.6MB. Free memory was 107.0MB in the beginning and 86.8MB in the end (delta: 20.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 778]: 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_test8-2.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 dfe9cedb3fb732c747a1ef802da6fccda86efe7de6f5d2fc74063f23f28dc4dd --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 09:40:10,456 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 09:40:10,555 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-03-04 09:40:10,562 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 09:40:10,564 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 09:40:10,584 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 09:40:10,585 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 09:40:10,586 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 09:40:10,586 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 09:40:10,586 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 09:40:10,587 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 09:40:10,587 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 09:40:10,587 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 09:40:10,587 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 09:40:10,588 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 09:40:10,588 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 09:40:10,588 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 09:40:10,588 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 09:40:10,588 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 09:40:10,588 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 09:40:10,588 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-04 09:40:10,588 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-04 09:40:10,588 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-04 09:40:10,589 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 09:40:10,589 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-04 09:40:10,589 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-04 09:40:10,589 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-04 09:40:10,589 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 09:40:10,589 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 09:40:10,589 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 09:40:10,589 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 09:40:10,589 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 09:40:10,590 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 09:40:10,590 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 09:40:10,590 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 09:40:10,590 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 09:40:10,590 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 09:40:10,590 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 09:40:10,590 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-04 09:40:10,591 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-04 09:40:10,591 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 09:40:10,591 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 09:40:10,591 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 09:40:10,591 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 09:40:10,591 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 -> dfe9cedb3fb732c747a1ef802da6fccda86efe7de6f5d2fc74063f23f28dc4dd [2025-03-04 09:40:10,826 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 09:40:10,831 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 09:40:10,832 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 09:40:10,834 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 09:40:10,834 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 09:40:10,835 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-2.i [2025-03-04 09:40:11,926 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be225a456/d0199f577b564c33b7c5e93f053b5a92/FLAG51e96398a [2025-03-04 09:40:12,229 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 09:40:12,230 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-2.i [2025-03-04 09:40:12,244 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be225a456/d0199f577b564c33b7c5e93f053b5a92/FLAG51e96398a [2025-03-04 09:40:12,257 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be225a456/d0199f577b564c33b7c5e93f053b5a92 [2025-03-04 09:40:12,259 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 09:40:12,260 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 09:40:12,260 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 09:40:12,260 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 09:40:12,263 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 09:40:12,264 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:40:12" (1/1) ... [2025-03-04 09:40:12,264 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34dc75a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:40:12, skipping insertion in model container [2025-03-04 09:40:12,264 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:40:12" (1/1) ... [2025-03-04 09:40:12,304 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 09:40:12,549 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:40:12,582 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:40:12,586 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:40:12,589 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:40:12,594 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:40:12,619 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:40:12,619 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:40:12,621 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:40:12,621 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:40:12,623 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:40:12,624 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:40:12,624 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:40:12,625 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:40:12,628 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:40:12,630 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:40:12,630 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:40:12,631 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:40:12,631 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:40:12,636 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:40:12,640 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:40:12,656 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-03-04 09:40:12,669 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 09:40:12,698 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:40:12,716 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:40:12,717 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:40:12,720 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:40:12,723 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:40:12,740 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:40:12,743 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:40:12,744 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:40:12,744 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:40:12,745 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:40:12,746 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:40:12,746 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:40:12,746 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:40:12,752 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:40:12,754 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:40:12,755 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:40:12,756 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:40:12,756 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:40:12,758 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:40:12,759 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:40:12,764 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 09:40:12,838 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:40:12,870 INFO L204 MainTranslator]: Completed translation [2025-03-04 09:40:12,871 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:40:12 WrapperNode [2025-03-04 09:40:12,872 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 09:40:12,872 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 09:40:12,873 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 09:40:12,873 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 09:40:12,877 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:40:12" (1/1) ... [2025-03-04 09:40:12,909 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:40:12" (1/1) ... [2025-03-04 09:40:12,967 INFO L138 Inliner]: procedures = 180, calls = 342, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1155 [2025-03-04 09:40:12,967 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 09:40:12,967 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 09:40:12,967 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 09:40:12,967 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 09:40:12,992 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:40:12" (1/1) ... [2025-03-04 09:40:12,992 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:40:12" (1/1) ... [2025-03-04 09:40:13,000 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:40:12" (1/1) ... [2025-03-04 09:40:13,064 INFO L175 MemorySlicer]: Split 304 memory accesses to 3 slices as follows [2, 34, 268]. 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, 4, 58]. [2025-03-04 09:40:13,067 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:40:12" (1/1) ... [2025-03-04 09:40:13,068 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:40:12" (1/1) ... [2025-03-04 09:40:13,112 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:40:12" (1/1) ... [2025-03-04 09:40:13,114 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:40:12" (1/1) ... [2025-03-04 09:40:13,121 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:40:12" (1/1) ... [2025-03-04 09:40:13,127 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:40:12" (1/1) ... [2025-03-04 09:40:13,140 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 09:40:13,141 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 09:40:13,142 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 09:40:13,142 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 09:40:13,143 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:40:12" (1/1) ... [2025-03-04 09:40:13,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 09:40:13,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:40:13,169 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-04 09:40:13,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-04 09:40:13,190 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2025-03-04 09:40:13,191 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2025-03-04 09:40:13,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2025-03-04 09:40:13,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2025-03-04 09:40:13,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2025-03-04 09:40:13,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-03-04 09:40:13,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-03-04 09:40:13,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2025-03-04 09:40:13,192 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-04 09:40:13,192 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-04 09:40:13,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-03-04 09:40:13,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-03-04 09:40:13,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2025-03-04 09:40:13,192 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-03-04 09:40:13,192 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-03-04 09:40:13,192 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2025-03-04 09:40:13,192 INFO L130 BoogieDeclarations]: Found specification of procedure test_int [2025-03-04 09:40:13,193 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int [2025-03-04 09:40:13,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-04 09:40:13,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 09:40:13,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-04 09:40:13,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-04 09:40:13,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-04 09:40:13,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-04 09:40:13,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-04 09:40:13,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-04 09:40:13,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-04 09:40:13,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-04 09:40:13,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-03-04 09:40:13,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-03-04 09:40:13,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2025-03-04 09:40:13,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-04 09:40:13,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-03-04 09:40:13,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2025-03-04 09:40:13,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 09:40:13,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 09:40:13,381 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 09:40:13,382 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 09:40:16,064 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L763: call ULTIMATE.dealloc(main_~#i~0#1.base, main_~#i~0#1.offset);havoc main_~#i~0#1.base, main_~#i~0#1.offset; [2025-03-04 09:40:16,157 INFO L? ?]: Removed 1321 outVars from TransFormulas that were not future-live. [2025-03-04 09:40:16,157 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 09:40:16,189 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 09:40:16,190 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 09:40:16,190 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 09:40:16 BoogieIcfgContainer [2025-03-04 09:40:16,190 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 09:40:16,192 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 09:40:16,192 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 09:40:16,195 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 09:40:16,196 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 09:40:12" (1/3) ... [2025-03-04 09:40:16,197 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f283d6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 09:40:16, skipping insertion in model container [2025-03-04 09:40:16,197 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:40:12" (2/3) ... [2025-03-04 09:40:16,197 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f283d6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 09:40:16, skipping insertion in model container [2025-03-04 09:40:16,197 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 09:40:16" (3/3) ... [2025-03-04 09:40:16,198 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test8-2.i [2025-03-04 09:40:16,209 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 09:40:16,210 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_SFH_test8-2.i that has 7 procedures, 1303 locations, 1 initial locations, 40 loop locations, and 634 error locations. [2025-03-04 09:40:16,255 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 09:40:16,263 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;@2b24685d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 09:40:16,263 INFO L334 AbstractCegarLoop]: Starting to check reachability of 634 error locations. [2025-03-04 09:40:16,268 INFO L276 IsEmpty]: Start isEmpty. Operand has 1293 states, 635 states have (on average 2.2330708661417322) internal successors, (1418), 1283 states have internal predecessors, (1418), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) [2025-03-04 09:40:16,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-03-04 09:40:16,271 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:40:16,271 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-03-04 09:40:16,271 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr632REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2025-03-04 09:40:16,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:40:16,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1509328, now seen corresponding path program 1 times [2025-03-04 09:40:16,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:40:16,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1017545286] [2025-03-04 09:40:16,284 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:40:16,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:40:16,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:40:16,286 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:40:16,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-04 09:40:16,415 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-04 09:40:16,424 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-04 09:40:16,424 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:40:16,424 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:40:16,429 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 09:40:16,432 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:40:16,461 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-04 09:40:16,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:40:16,480 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:40:16,480 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:40:16,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017545286] [2025-03-04 09:40:16,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017545286] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:40:16,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:40:16,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 09:40:16,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000703025] [2025-03-04 09:40:16,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:40:16,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:40:16,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:40:16,521 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:40:16,522 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:40:16,526 INFO L87 Difference]: Start difference. First operand has 1293 states, 635 states have (on average 2.2330708661417322) internal successors, (1418), 1283 states have internal predecessors, (1418), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) 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) [2025-03-04 09:40:18,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:40:18,568 INFO L93 Difference]: Finished difference Result 1880 states and 2024 transitions. [2025-03-04 09:40:18,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:40:18,571 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 [2025-03-04 09:40:18,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:40:18,583 INFO L225 Difference]: With dead ends: 1880 [2025-03-04 09:40:18,584 INFO L226 Difference]: Without dead ends: 1878 [2025-03-04 09:40:18,585 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 [2025-03-04 09:40:18,586 INFO L435 NwaCegarLoop]: 1085 mSDtfsCounter, 637 mSDsluCounter, 750 mSDsCounter, 0 mSdLazyCounter, 917 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 638 SdHoareTripleChecker+Valid, 1835 SdHoareTripleChecker+Invalid, 923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-03-04 09:40:18,587 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [638 Valid, 1835 Invalid, 923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 917 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-03-04 09:40:18,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1878 states. [2025-03-04 09:40:18,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1878 to 1490. [2025-03-04 09:40:18,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1490 states, 839 states have (on average 2.104886769964243) internal successors, (1766), 1479 states have internal predecessors, (1766), 23 states have call successors, (23), 4 states have call predecessors, (23), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2025-03-04 09:40:18,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1490 states to 1490 states and 1810 transitions. [2025-03-04 09:40:18,658 INFO L78 Accepts]: Start accepts. Automaton has 1490 states and 1810 transitions. Word has length 3 [2025-03-04 09:40:18,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:40:18,659 INFO L471 AbstractCegarLoop]: Abstraction has 1490 states and 1810 transitions. [2025-03-04 09:40:18,659 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) [2025-03-04 09:40:18,659 INFO L276 IsEmpty]: Start isEmpty. Operand 1490 states and 1810 transitions. [2025-03-04 09:40:18,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-03-04 09:40:18,659 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:40:18,659 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-03-04 09:40:18,667 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-04 09:40:18,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:40:18,860 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr631REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2025-03-04 09:40:18,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:40:18,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1509327, now seen corresponding path program 1 times [2025-03-04 09:40:18,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:40:18,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2078859619] [2025-03-04 09:40:18,861 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:40:18,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:40:18,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:40:18,863 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:40:18,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-04 09:40:18,950 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-04 09:40:18,953 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-04 09:40:18,953 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:40:18,953 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:40:18,953 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:40:18,955 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:40:18,963 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-04 09:40:18,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:40:18,968 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:40:18,968 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:40:18,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078859619] [2025-03-04 09:40:18,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078859619] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:40:18,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:40:18,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 09:40:18,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296236934] [2025-03-04 09:40:18,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:40:18,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:40:18,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:40:18,969 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:40:18,969 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:40:18,969 INFO L87 Difference]: Start difference. First operand 1490 states and 1810 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) [2025-03-04 09:40:20,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:40:20,100 INFO L93 Difference]: Finished difference Result 1687 states and 2016 transitions. [2025-03-04 09:40:20,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:40:20,100 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 [2025-03-04 09:40:20,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:40:20,105 INFO L225 Difference]: With dead ends: 1687 [2025-03-04 09:40:20,105 INFO L226 Difference]: Without dead ends: 1687 [2025-03-04 09:40:20,105 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 [2025-03-04 09:40:20,106 INFO L435 NwaCegarLoop]: 814 mSDtfsCounter, 1147 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1151 SdHoareTripleChecker+Valid, 1050 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-04 09:40:20,106 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1151 Valid, 1050 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-04 09:40:20,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1687 states. [2025-03-04 09:40:20,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1687 to 1492. [2025-03-04 09:40:20,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1492 states, 850 states have (on average 2.0788235294117645) internal successors, (1767), 1480 states have internal predecessors, (1767), 24 states have call successors, (24), 4 states have call predecessors, (24), 3 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) [2025-03-04 09:40:20,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1492 states to 1492 states and 1813 transitions. [2025-03-04 09:40:20,135 INFO L78 Accepts]: Start accepts. Automaton has 1492 states and 1813 transitions. Word has length 3 [2025-03-04 09:40:20,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:40:20,135 INFO L471 AbstractCegarLoop]: Abstraction has 1492 states and 1813 transitions. [2025-03-04 09:40:20,135 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) [2025-03-04 09:40:20,135 INFO L276 IsEmpty]: Start isEmpty. Operand 1492 states and 1813 transitions. [2025-03-04 09:40:20,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-03-04 09:40:20,136 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:40:20,136 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:40:20,142 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-04 09:40:20,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:40:20,337 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr628REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2025-03-04 09:40:20,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:40:20,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1924493589, now seen corresponding path program 1 times [2025-03-04 09:40:20,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:40:20,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1685947755] [2025-03-04 09:40:20,337 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:40:20,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:40:20,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:40:20,340 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:40:20,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-04 09:40:20,426 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-04 09:40:20,436 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-04 09:40:20,436 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:40:20,436 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:40:20,439 INFO L256 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-04 09:40:20,440 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:40:20,445 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-04 09:40:20,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-04 09:40:20,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-03-04 09:40:20,522 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-04 09:40:20,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-03-04 09:40:20,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:40:20,534 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:40:20,534 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:40:20,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685947755] [2025-03-04 09:40:20,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685947755] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:40:20,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:40:20,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:40:20,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2341374] [2025-03-04 09:40:20,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:40:20,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:40:20,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:40:20,535 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:40:20,535 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:40:20,535 INFO L87 Difference]: Start difference. First operand 1492 states and 1813 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) [2025-03-04 09:40:22,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:40:22,694 INFO L93 Difference]: Finished difference Result 1676 states and 2004 transitions. [2025-03-04 09:40:22,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:40:22,695 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 [2025-03-04 09:40:22,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:40:22,699 INFO L225 Difference]: With dead ends: 1676 [2025-03-04 09:40:22,700 INFO L226 Difference]: Without dead ends: 1676 [2025-03-04 09:40:22,700 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 [2025-03-04 09:40:22,700 INFO L435 NwaCegarLoop]: 493 mSDtfsCounter, 1461 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 1132 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1467 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 1150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2025-03-04 09:40:22,701 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1467 Valid, 729 Invalid, 1150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1132 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2025-03-04 09:40:22,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1676 states. [2025-03-04 09:40:22,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1676 to 1270. [2025-03-04 09:40:22,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1270 states, 640 states have (on average 2.0734375) internal successors, (1327), 1259 states have internal predecessors, (1327), 23 states have call successors, (23), 4 states have call predecessors, (23), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2025-03-04 09:40:22,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1270 states to 1270 states and 1371 transitions. [2025-03-04 09:40:22,724 INFO L78 Accepts]: Start accepts. Automaton has 1270 states and 1371 transitions. Word has length 7 [2025-03-04 09:40:22,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:40:22,725 INFO L471 AbstractCegarLoop]: Abstraction has 1270 states and 1371 transitions. [2025-03-04 09:40:22,725 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) [2025-03-04 09:40:22,725 INFO L276 IsEmpty]: Start isEmpty. Operand 1270 states and 1371 transitions. [2025-03-04 09:40:22,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-03-04 09:40:22,725 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:40:22,725 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:40:22,734 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-04 09:40:22,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:40:22,930 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr626REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2025-03-04 09:40:22,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:40:22,930 INFO L85 PathProgramCache]: Analyzing trace with hash 470242295, now seen corresponding path program 1 times [2025-03-04 09:40:22,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:40:22,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1989289983] [2025-03-04 09:40:22,930 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:40:22,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:40:22,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:40:22,932 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:40:22,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-04 09:40:23,019 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-04 09:40:23,029 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-04 09:40:23,029 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:40:23,029 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:40:23,031 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 09:40:23,032 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:40:23,043 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-04 09:40:23,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:40:23,076 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:40:23,076 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:40:23,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989289983] [2025-03-04 09:40:23,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989289983] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:40:23,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:40:23,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 09:40:23,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122539664] [2025-03-04 09:40:23,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:40:23,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:40:23,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:40:23,077 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:40:23,077 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:40:23,077 INFO L87 Difference]: Start difference. First operand 1270 states and 1371 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) [2025-03-04 09:40:24,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:40:24,844 INFO L93 Difference]: Finished difference Result 1751 states and 1893 transitions. [2025-03-04 09:40:24,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:40:24,845 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 [2025-03-04 09:40:24,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:40:24,849 INFO L225 Difference]: With dead ends: 1751 [2025-03-04 09:40:24,849 INFO L226 Difference]: Without dead ends: 1751 [2025-03-04 09:40:24,849 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 [2025-03-04 09:40:24,849 INFO L435 NwaCegarLoop]: 1447 mSDtfsCounter, 697 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 902 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 699 SdHoareTripleChecker+Valid, 2039 SdHoareTripleChecker+Invalid, 917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-03-04 09:40:24,850 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [699 Valid, 2039 Invalid, 917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 902 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-03-04 09:40:24,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1751 states. [2025-03-04 09:40:24,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1751 to 1523. [2025-03-04 09:40:24,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1523 states, 901 states have (on average 2.0410654827968924) internal successors, (1839), 1510 states have internal predecessors, (1839), 25 states have call successors, (25), 4 states have call predecessors, (25), 3 states have return successors, (23), 9 states have call predecessors, (23), 23 states have call successors, (23) [2025-03-04 09:40:24,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1523 states to 1523 states and 1887 transitions. [2025-03-04 09:40:24,869 INFO L78 Accepts]: Start accepts. Automaton has 1523 states and 1887 transitions. Word has length 8 [2025-03-04 09:40:24,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:40:24,869 INFO L471 AbstractCegarLoop]: Abstraction has 1523 states and 1887 transitions. [2025-03-04 09:40:24,869 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) [2025-03-04 09:40:24,869 INFO L276 IsEmpty]: Start isEmpty. Operand 1523 states and 1887 transitions. [2025-03-04 09:40:24,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-03-04 09:40:24,869 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:40:24,869 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:40:24,877 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-04 09:40:25,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:40:25,070 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr625REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2025-03-04 09:40:25,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:40:25,071 INFO L85 PathProgramCache]: Analyzing trace with hash 470242294, now seen corresponding path program 1 times [2025-03-04 09:40:25,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:40:25,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [913395422] [2025-03-04 09:40:25,071 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:40:25,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:40:25,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:40:25,073 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:40:25,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-04 09:40:25,157 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-04 09:40:25,164 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-04 09:40:25,165 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:40:25,165 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:40:25,166 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:40:25,167 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:40:25,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-04 09:40:25,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:40:25,180 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:40:25,180 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:40:25,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913395422] [2025-03-04 09:40:25,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [913395422] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:40:25,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:40:25,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 09:40:25,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806947092] [2025-03-04 09:40:25,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:40:25,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:40:25,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:40:25,181 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:40:25,181 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:40:25,181 INFO L87 Difference]: Start difference. First operand 1523 states and 1887 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) [2025-03-04 09:40:26,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:40:26,300 INFO L93 Difference]: Finished difference Result 1860 states and 2251 transitions. [2025-03-04 09:40:26,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:40:26,300 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 [2025-03-04 09:40:26,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:40:26,304 INFO L225 Difference]: With dead ends: 1860 [2025-03-04 09:40:26,305 INFO L226 Difference]: Without dead ends: 1860 [2025-03-04 09:40:26,305 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 [2025-03-04 09:40:26,305 INFO L435 NwaCegarLoop]: 1213 mSDtfsCounter, 933 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 842 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 938 SdHoareTripleChecker+Valid, 1623 SdHoareTripleChecker+Invalid, 894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-04 09:40:26,305 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [938 Valid, 1623 Invalid, 894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 842 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-04 09:40:26,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1860 states. [2025-03-04 09:40:26,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1860 to 1475. [2025-03-04 09:40:26,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1475 states, 901 states have (on average 1.9811320754716981) internal successors, (1785), 1462 states have internal predecessors, (1785), 25 states have call successors, (25), 4 states have call predecessors, (25), 3 states have return successors, (23), 9 states have call predecessors, (23), 23 states have call successors, (23) [2025-03-04 09:40:26,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1475 states to 1475 states and 1833 transitions. [2025-03-04 09:40:26,326 INFO L78 Accepts]: Start accepts. Automaton has 1475 states and 1833 transitions. Word has length 8 [2025-03-04 09:40:26,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:40:26,326 INFO L471 AbstractCegarLoop]: Abstraction has 1475 states and 1833 transitions. [2025-03-04 09:40:26,326 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) [2025-03-04 09:40:26,326 INFO L276 IsEmpty]: Start isEmpty. Operand 1475 states and 1833 transitions. [2025-03-04 09:40:26,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-03-04 09:40:26,326 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:40:26,327 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:40:26,333 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-04 09:40:26,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:40:26,527 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr104REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2025-03-04 09:40:26,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:40:26,528 INFO L85 PathProgramCache]: Analyzing trace with hash -723520614, now seen corresponding path program 1 times [2025-03-04 09:40:26,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:40:26,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1096135824] [2025-03-04 09:40:26,529 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:40:26,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:40:26,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:40:26,530 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:40:26,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-04 09:40:26,620 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-04 09:40:26,630 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-04 09:40:26,630 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:40:26,630 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:40:26,632 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:40:26,633 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:40:26,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:40:26,667 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:40:26,668 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:40:26,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096135824] [2025-03-04 09:40:26,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1096135824] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:40:26,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:40:26,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:40:26,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885345621] [2025-03-04 09:40:26,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:40:26,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:40:26,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:40:26,668 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:40:26,668 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:40:26,668 INFO L87 Difference]: Start difference. First operand 1475 states and 1833 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:40:26,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:40:26,931 INFO L93 Difference]: Finished difference Result 2239 states and 2853 transitions. [2025-03-04 09:40:26,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:40:26,932 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2025-03-04 09:40:26,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:40:26,938 INFO L225 Difference]: With dead ends: 2239 [2025-03-04 09:40:26,938 INFO L226 Difference]: Without dead ends: 2239 [2025-03-04 09:40:26,938 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:40:26,939 INFO L435 NwaCegarLoop]: 1436 mSDtfsCounter, 629 mSDsluCounter, 1180 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 630 SdHoareTripleChecker+Valid, 2616 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-04 09:40:26,939 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [630 Valid, 2616 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-04 09:40:26,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2239 states. [2025-03-04 09:40:26,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2239 to 1878. [2025-03-04 09:40:26,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1878 states, 1302 states have (on average 1.9692780337941629) internal successors, (2564), 1863 states have internal predecessors, (2564), 27 states have call successors, (27), 4 states have call predecessors, (27), 3 states have return successors, (25), 11 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-04 09:40:26,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1878 states to 1878 states and 2616 transitions. [2025-03-04 09:40:26,965 INFO L78 Accepts]: Start accepts. Automaton has 1878 states and 2616 transitions. Word has length 11 [2025-03-04 09:40:26,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:40:26,966 INFO L471 AbstractCegarLoop]: Abstraction has 1878 states and 2616 transitions. [2025-03-04 09:40:26,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:40:26,966 INFO L276 IsEmpty]: Start isEmpty. Operand 1878 states and 2616 transitions. [2025-03-04 09:40:26,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-03-04 09:40:26,966 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:40:26,966 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:40:26,973 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-04 09:40:27,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:40:27,167 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr298REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2025-03-04 09:40:27,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:40:27,167 INFO L85 PathProgramCache]: Analyzing trace with hash -941190165, now seen corresponding path program 1 times [2025-03-04 09:40:27,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:40:27,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [374735097] [2025-03-04 09:40:27,168 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:40:27,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:40:27,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:40:27,170 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:40:27,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-04 09:40:27,259 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-04 09:40:27,270 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-04 09:40:27,270 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:40:27,270 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:40:27,271 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-04 09:40:27,272 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:40:27,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-04 09:40:27,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:40:27,335 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:40:27,335 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:40:27,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374735097] [2025-03-04 09:40:27,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374735097] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:40:27,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:40:27,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:40:27,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811093390] [2025-03-04 09:40:27,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:40:27,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:40:27,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:40:27,336 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:40:27,336 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:40:27,336 INFO L87 Difference]: Start difference. First operand 1878 states and 2616 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:40:29,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:40:29,484 INFO L93 Difference]: Finished difference Result 2582 states and 3485 transitions. [2025-03-04 09:40:29,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:40:29,485 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2025-03-04 09:40:29,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:40:29,491 INFO L225 Difference]: With dead ends: 2582 [2025-03-04 09:40:29,491 INFO L226 Difference]: Without dead ends: 2582 [2025-03-04 09:40:29,491 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 [2025-03-04 09:40:29,492 INFO L435 NwaCegarLoop]: 1024 mSDtfsCounter, 632 mSDsluCounter, 1377 mSDsCounter, 0 mSdLazyCounter, 1485 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 2401 SdHoareTripleChecker+Invalid, 1500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2025-03-04 09:40:29,492 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [633 Valid, 2401 Invalid, 1500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1485 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2025-03-04 09:40:29,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2582 states. [2025-03-04 09:40:29,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2582 to 2193. [2025-03-04 09:40:29,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2193 states, 1615 states have (on average 1.9702786377708978) internal successors, (3182), 2176 states have internal predecessors, (3182), 29 states have call successors, (29), 4 states have call predecessors, (29), 3 states have return successors, (27), 13 states have call predecessors, (27), 27 states have call successors, (27) [2025-03-04 09:40:29,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2193 states to 2193 states and 3238 transitions. [2025-03-04 09:40:29,517 INFO L78 Accepts]: Start accepts. Automaton has 2193 states and 3238 transitions. Word has length 12 [2025-03-04 09:40:29,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:40:29,518 INFO L471 AbstractCegarLoop]: Abstraction has 2193 states and 3238 transitions. [2025-03-04 09:40:29,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:40:29,518 INFO L276 IsEmpty]: Start isEmpty. Operand 2193 states and 3238 transitions. [2025-03-04 09:40:29,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-03-04 09:40:29,518 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:40:29,518 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:40:29,528 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-04 09:40:29,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:40:29,719 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr297REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2025-03-04 09:40:29,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:40:29,719 INFO L85 PathProgramCache]: Analyzing trace with hash -941190166, now seen corresponding path program 1 times [2025-03-04 09:40:29,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:40:29,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [215563315] [2025-03-04 09:40:29,719 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:40:29,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:40:29,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:40:29,721 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:40:29,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-04 09:40:29,805 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-04 09:40:29,813 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-04 09:40:29,813 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:40:29,813 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:40:29,814 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 09:40:29,816 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:40:29,822 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-04 09:40:29,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:40:29,843 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:40:29,843 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:40:29,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215563315] [2025-03-04 09:40:29,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215563315] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:40:29,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:40:29,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:40:29,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945772467] [2025-03-04 09:40:29,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:40:29,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:40:29,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:40:29,844 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:40:29,844 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:40:29,844 INFO L87 Difference]: Start difference. First operand 2193 states and 3238 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:40:31,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:40:31,137 INFO L93 Difference]: Finished difference Result 2393 states and 3361 transitions. [2025-03-04 09:40:31,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:40:31,137 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2025-03-04 09:40:31,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:40:31,142 INFO L225 Difference]: With dead ends: 2393 [2025-03-04 09:40:31,142 INFO L226 Difference]: Without dead ends: 2393 [2025-03-04 09:40:31,142 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 [2025-03-04 09:40:31,143 INFO L435 NwaCegarLoop]: 771 mSDtfsCounter, 1144 mSDsluCounter, 891 mSDsCounter, 0 mSdLazyCounter, 1239 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1148 SdHoareTripleChecker+Valid, 1662 SdHoareTripleChecker+Invalid, 1268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-04 09:40:31,143 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1148 Valid, 1662 Invalid, 1268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1239 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-04 09:40:31,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2393 states. [2025-03-04 09:40:31,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2393 to 2170. [2025-03-04 09:40:31,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2170 states, 1615 states have (on average 1.9009287925696594) internal successors, (3070), 2153 states have internal predecessors, (3070), 29 states have call successors, (29), 4 states have call predecessors, (29), 3 states have return successors, (27), 13 states have call predecessors, (27), 27 states have call successors, (27) [2025-03-04 09:40:31,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2170 states to 2170 states and 3126 transitions. [2025-03-04 09:40:31,171 INFO L78 Accepts]: Start accepts. Automaton has 2170 states and 3126 transitions. Word has length 12 [2025-03-04 09:40:31,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:40:31,171 INFO L471 AbstractCegarLoop]: Abstraction has 2170 states and 3126 transitions. [2025-03-04 09:40:31,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:40:31,171 INFO L276 IsEmpty]: Start isEmpty. Operand 2170 states and 3126 transitions. [2025-03-04 09:40:31,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-03-04 09:40:31,172 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:40:31,173 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:40:31,186 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-04 09:40:31,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:40:31,373 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr274REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2025-03-04 09:40:31,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:40:31,374 INFO L85 PathProgramCache]: Analyzing trace with hash 887832023, now seen corresponding path program 1 times [2025-03-04 09:40:31,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:40:31,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [530002298] [2025-03-04 09:40:31,374 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:40:31,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:40:31,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:40:31,377 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:40:31,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-04 09:40:31,459 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-04 09:40:31,468 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-04 09:40:31,468 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:40:31,468 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:40:31,469 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:40:31,470 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:40:31,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:40:31,484 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:40:31,484 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:40:31,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530002298] [2025-03-04 09:40:31,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530002298] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:40:31,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:40:31,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:40:31,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577090296] [2025-03-04 09:40:31,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:40:31,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:40:31,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:40:31,485 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:40:31,485 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:40:31,485 INFO L87 Difference]: Start difference. First operand 2170 states and 3126 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) [2025-03-04 09:40:31,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:40:31,536 INFO L93 Difference]: Finished difference Result 2046 states and 2897 transitions. [2025-03-04 09:40:31,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 09:40:31,536 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 [2025-03-04 09:40:31,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:40:31,541 INFO L225 Difference]: With dead ends: 2046 [2025-03-04 09:40:31,542 INFO L226 Difference]: Without dead ends: 2046 [2025-03-04 09:40:31,542 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:40:31,543 INFO L435 NwaCegarLoop]: 1193 mSDtfsCounter, 45 mSDsluCounter, 2363 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 3556 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 09:40:31,543 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 3556 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 09:40:31,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2046 states. [2025-03-04 09:40:31,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2046 to 2046. [2025-03-04 09:40:31,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2046 states, 1510 states have (on average 1.8814569536423842) internal successors, (2841), 2029 states have internal predecessors, (2841), 29 states have call successors, (29), 4 states have call predecessors, (29), 3 states have return successors, (27), 13 states have call predecessors, (27), 27 states have call successors, (27) [2025-03-04 09:40:31,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2046 states to 2046 states and 2897 transitions. [2025-03-04 09:40:31,566 INFO L78 Accepts]: Start accepts. Automaton has 2046 states and 2897 transitions. Word has length 13 [2025-03-04 09:40:31,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:40:31,567 INFO L471 AbstractCegarLoop]: Abstraction has 2046 states and 2897 transitions. [2025-03-04 09:40:31,567 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) [2025-03-04 09:40:31,567 INFO L276 IsEmpty]: Start isEmpty. Operand 2046 states and 2897 transitions. [2025-03-04 09:40:31,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-03-04 09:40:31,567 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:40:31,567 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:40:31,574 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-03-04 09:40:31,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:40:31,768 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2025-03-04 09:40:31,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:40:31,769 INFO L85 PathProgramCache]: Analyzing trace with hash 481362901, now seen corresponding path program 1 times [2025-03-04 09:40:31,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:40:31,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [319910746] [2025-03-04 09:40:31,770 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:40:31,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:40:31,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:40:31,771 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:40:31,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-04 09:40:31,859 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-04 09:40:31,870 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-04 09:40:31,870 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:40:31,870 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:40:31,872 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-04 09:40:31,874 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:40:31,878 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-04 09:40:31,879 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-04 09:40:31,879 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-04 09:40:31,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2025-03-04 09:40:31,911 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-04 09:40:31,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2025-03-04 09:40:31,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:40:31,919 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:40:31,919 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:40:31,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319910746] [2025-03-04 09:40:31,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319910746] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:40:31,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:40:31,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:40:31,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667502028] [2025-03-04 09:40:31,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:40:31,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:40:31,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:40:31,920 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:40:31,920 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:40:31,920 INFO L87 Difference]: Start difference. First operand 2046 states and 2897 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) [2025-03-04 09:40:32,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:40:32,076 INFO L93 Difference]: Finished difference Result 3043 states and 3999 transitions. [2025-03-04 09:40:32,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:40:32,076 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 [2025-03-04 09:40:32,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:40:32,083 INFO L225 Difference]: With dead ends: 3043 [2025-03-04 09:40:32,083 INFO L226 Difference]: Without dead ends: 3043 [2025-03-04 09:40:32,083 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:40:32,083 INFO L435 NwaCegarLoop]: 1194 mSDtfsCounter, 1076 mSDsluCounter, 2378 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1081 SdHoareTripleChecker+Valid, 3572 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 09:40:32,084 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1081 Valid, 3572 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 09:40:32,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3043 states. [2025-03-04 09:40:32,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3043 to 1731. [2025-03-04 09:40:32,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1731 states, 1197 states have (on average 1.8863826232247285) internal successors, (2258), 1716 states have internal predecessors, (2258), 27 states have call successors, (27), 4 states have call predecessors, (27), 3 states have return successors, (25), 11 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-04 09:40:32,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 2310 transitions. [2025-03-04 09:40:32,104 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 2310 transitions. Word has length 13 [2025-03-04 09:40:32,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:40:32,104 INFO L471 AbstractCegarLoop]: Abstraction has 1731 states and 2310 transitions. [2025-03-04 09:40:32,104 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) [2025-03-04 09:40:32,104 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 2310 transitions. [2025-03-04 09:40:32,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-03-04 09:40:32,105 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:40:32,105 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:40:32,111 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-03-04 09:40:32,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:40:32,309 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr617REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2025-03-04 09:40:32,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:40:32,310 INFO L85 PathProgramCache]: Analyzing trace with hash 538416479, now seen corresponding path program 1 times [2025-03-04 09:40:32,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:40:32,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1492141674] [2025-03-04 09:40:32,310 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:40:32,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:40:32,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:40:32,312 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:40:32,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-04 09:40:32,411 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-04 09:40:32,427 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-04 09:40:32,428 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:40:32,428 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:40:32,430 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 09:40:32,431 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:40:32,436 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-04 09:40:32,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:40:32,470 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:40:32,470 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:40:32,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492141674] [2025-03-04 09:40:32,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492141674] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:40:32,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:40:32,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:40:32,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301100980] [2025-03-04 09:40:32,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:40:32,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:40:32,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:40:32,471 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:40:32,471 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:40:32,471 INFO L87 Difference]: Start difference. First operand 1731 states and 2310 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) [2025-03-04 09:40:33,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:40:33,652 INFO L93 Difference]: Finished difference Result 1729 states and 2288 transitions. [2025-03-04 09:40:33,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:40:33,652 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 [2025-03-04 09:40:33,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:40:33,657 INFO L225 Difference]: With dead ends: 1729 [2025-03-04 09:40:33,657 INFO L226 Difference]: Without dead ends: 1729 [2025-03-04 09:40:33,657 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 [2025-03-04 09:40:33,658 INFO L435 NwaCegarLoop]: 749 mSDtfsCounter, 898 mSDsluCounter, 756 mSDsCounter, 0 mSdLazyCounter, 1183 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 903 SdHoareTripleChecker+Valid, 1505 SdHoareTripleChecker+Invalid, 1211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-04 09:40:33,658 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [903 Valid, 1505 Invalid, 1211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1183 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-04 09:40:33,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1729 states. [2025-03-04 09:40:33,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1729 to 1708. [2025-03-04 09:40:33,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1708 states, 1197 states have (on average 1.847953216374269) internal successors, (2212), 1693 states have internal predecessors, (2212), 27 states have call successors, (27), 4 states have call predecessors, (27), 3 states have return successors, (25), 11 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-04 09:40:33,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1708 states to 1708 states and 2264 transitions. [2025-03-04 09:40:33,674 INFO L78 Accepts]: Start accepts. Automaton has 1708 states and 2264 transitions. Word has length 17 [2025-03-04 09:40:33,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:40:33,674 INFO L471 AbstractCegarLoop]: Abstraction has 1708 states and 2264 transitions. [2025-03-04 09:40:33,674 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) [2025-03-04 09:40:33,674 INFO L276 IsEmpty]: Start isEmpty. Operand 1708 states and 2264 transitions. [2025-03-04 09:40:33,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-03-04 09:40:33,675 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:40:33,675 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:40:33,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-03-04 09:40:33,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:40:33,875 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr618REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2025-03-04 09:40:33,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:40:33,876 INFO L85 PathProgramCache]: Analyzing trace with hash 538416480, now seen corresponding path program 1 times [2025-03-04 09:40:33,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:40:33,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1332142120] [2025-03-04 09:40:33,876 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:40:33,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:40:33,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:40:33,878 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:40:33,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-04 09:40:33,973 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-04 09:40:33,992 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-04 09:40:33,992 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:40:33,992 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:40:33,995 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-04 09:40:33,996 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:40:34,001 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-04 09:40:34,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:40:34,056 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:40:34,056 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:40:34,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332142120] [2025-03-04 09:40:34,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332142120] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:40:34,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:40:34,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:40:34,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961876304] [2025-03-04 09:40:34,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:40:34,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:40:34,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:40:34,056 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:40:34,056 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:40:34,056 INFO L87 Difference]: Start difference. First operand 1708 states and 2264 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) [2025-03-04 09:40:35,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:40:35,991 INFO L93 Difference]: Finished difference Result 2025 states and 2425 transitions. [2025-03-04 09:40:35,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:40:35,991 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 [2025-03-04 09:40:35,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:40:35,995 INFO L225 Difference]: With dead ends: 2025 [2025-03-04 09:40:35,995 INFO L226 Difference]: Without dead ends: 2025 [2025-03-04 09:40:35,996 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 [2025-03-04 09:40:35,996 INFO L435 NwaCegarLoop]: 1360 mSDtfsCounter, 735 mSDsluCounter, 1433 mSDsCounter, 0 mSdLazyCounter, 1516 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 737 SdHoareTripleChecker+Valid, 2793 SdHoareTripleChecker+Invalid, 1538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-03-04 09:40:35,996 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [737 Valid, 2793 Invalid, 1538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1516 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-03-04 09:40:35,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2025 states. [2025-03-04 09:40:36,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2025 to 1822. [2025-03-04 09:40:36,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1822 states, 1311 states have (on average 1.7925247902364607) internal successors, (2350), 1807 states have internal predecessors, (2350), 27 states have call successors, (27), 4 states have call predecessors, (27), 3 states have return successors, (25), 11 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-04 09:40:36,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1822 states to 1822 states and 2402 transitions. [2025-03-04 09:40:36,010 INFO L78 Accepts]: Start accepts. Automaton has 1822 states and 2402 transitions. Word has length 17 [2025-03-04 09:40:36,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:40:36,010 INFO L471 AbstractCegarLoop]: Abstraction has 1822 states and 2402 transitions. [2025-03-04 09:40:36,011 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) [2025-03-04 09:40:36,011 INFO L276 IsEmpty]: Start isEmpty. Operand 1822 states and 2402 transitions. [2025-03-04 09:40:36,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2025-03-04 09:40:36,013 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:40:36,013 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] [2025-03-04 09:40:36,021 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-03-04 09:40:36,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:40:36,214 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr618REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2025-03-04 09:40:36,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:40:36,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1612376140, now seen corresponding path program 1 times [2025-03-04 09:40:36,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:40:36,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [20282442] [2025-03-04 09:40:36,215 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:40:36,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:40:36,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:40:36,217 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:40:36,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-04 09:40:36,331 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-03-04 09:40:36,379 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-03-04 09:40:36,379 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:40:36,379 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:40:36,387 INFO L256 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-04 09:40:36,388 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:40:36,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-04 09:40:36,523 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:40:36,523 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:40:36,831 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:40:36,832 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:40:36,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20282442] [2025-03-04 09:40:36,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20282442] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 09:40:36,832 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 09:40:36,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2025-03-04 09:40:36,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964622864] [2025-03-04 09:40:36,832 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 09:40:36,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-04 09:40:36,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:40:36,832 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-04 09:40:36,832 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-04 09:40:36,833 INFO L87 Difference]: Start difference. First operand 1822 states and 2402 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) [2025-03-04 09:40:42,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:40:42,762 INFO L93 Difference]: Finished difference Result 2381 states and 2915 transitions. [2025-03-04 09:40:42,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-04 09:40:42,763 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 [2025-03-04 09:40:42,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:40:42,769 INFO L225 Difference]: With dead ends: 2381 [2025-03-04 09:40:42,769 INFO L226 Difference]: Without dead ends: 2381 [2025-03-04 09:40:42,769 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 [2025-03-04 09:40:42,770 INFO L435 NwaCegarLoop]: 1387 mSDtfsCounter, 2279 mSDsluCounter, 3246 mSDsCounter, 0 mSdLazyCounter, 3095 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2282 SdHoareTripleChecker+Valid, 4633 SdHoareTripleChecker+Invalid, 3124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 3095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2025-03-04 09:40:42,770 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2282 Valid, 4633 Invalid, 3124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 3095 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2025-03-04 09:40:42,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2381 states. [2025-03-04 09:40:42,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2381 to 1986. [2025-03-04 09:40:42,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1986 states, 1475 states have (on average 1.7505084745762711) internal successors, (2582), 1971 states have internal predecessors, (2582), 27 states have call successors, (27), 4 states have call predecessors, (27), 3 states have return successors, (25), 11 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-04 09:40:42,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1986 states to 1986 states and 2634 transitions. [2025-03-04 09:40:42,788 INFO L78 Accepts]: Start accepts. Automaton has 1986 states and 2634 transitions. Word has length 36 [2025-03-04 09:40:42,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:40:42,789 INFO L471 AbstractCegarLoop]: Abstraction has 1986 states and 2634 transitions. [2025-03-04 09:40:42,789 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) [2025-03-04 09:40:42,789 INFO L276 IsEmpty]: Start isEmpty. Operand 1986 states and 2634 transitions. [2025-03-04 09:40:42,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2025-03-04 09:40:42,789 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:40:42,790 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] [2025-03-04 09:40:42,800 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-03-04 09:40:42,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:40:42,990 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr536REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2025-03-04 09:40:42,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:40:42,990 INFO L85 PathProgramCache]: Analyzing trace with hash -2114211545, now seen corresponding path program 1 times [2025-03-04 09:40:42,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:40:42,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1841404088] [2025-03-04 09:40:42,991 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:40:42,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:40:42,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:40:42,993 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:40:42,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-04 09:40:43,099 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-03-04 09:40:43,156 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-03-04 09:40:43,156 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:40:43,156 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:40:43,163 INFO L256 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:40:43,164 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:40:43,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:40:43,192 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:40:43,192 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:40:43,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841404088] [2025-03-04 09:40:43,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841404088] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:40:43,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:40:43,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:40:43,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814590900] [2025-03-04 09:40:43,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:40:43,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:40:43,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:40:43,193 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:40:43,193 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:40:43,194 INFO L87 Difference]: Start difference. First operand 1986 states and 2634 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) [2025-03-04 09:40:43,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:40:43,256 INFO L93 Difference]: Finished difference Result 1675 states and 2198 transitions. [2025-03-04 09:40:43,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 09:40:43,257 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 [2025-03-04 09:40:43,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:40:43,260 INFO L225 Difference]: With dead ends: 1675 [2025-03-04 09:40:43,260 INFO L226 Difference]: Without dead ends: 1675 [2025-03-04 09:40:43,260 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 [2025-03-04 09:40:43,260 INFO L435 NwaCegarLoop]: 1130 mSDtfsCounter, 56 mSDsluCounter, 2187 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 3317 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 09:40:43,263 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 3317 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 09:40:43,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1675 states. [2025-03-04 09:40:43,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1675 to 1673. [2025-03-04 09:40:43,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1673 states, 1185 states have (on average 1.809282700421941) internal successors, (2144), 1658 states have internal predecessors, (2144), 27 states have call successors, (27), 4 states have call predecessors, (27), 3 states have return successors, (25), 11 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-04 09:40:43,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1673 states to 1673 states and 2196 transitions. [2025-03-04 09:40:43,280 INFO L78 Accepts]: Start accepts. Automaton has 1673 states and 2196 transitions. Word has length 51 [2025-03-04 09:40:43,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:40:43,280 INFO L471 AbstractCegarLoop]: Abstraction has 1673 states and 2196 transitions. [2025-03-04 09:40:43,280 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) [2025-03-04 09:40:43,280 INFO L276 IsEmpty]: Start isEmpty. Operand 1673 states and 2196 transitions. [2025-03-04 09:40:43,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2025-03-04 09:40:43,282 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:40:43,282 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] [2025-03-04 09:40:43,292 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-03-04 09:40:43,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:40:43,483 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr536REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2025-03-04 09:40:43,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:40:43,484 INFO L85 PathProgramCache]: Analyzing trace with hash 2040866399, now seen corresponding path program 1 times [2025-03-04 09:40:43,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:40:43,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1367023650] [2025-03-04 09:40:43,484 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:40:43,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:40:43,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:40:43,487 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:40:43,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-03-04 09:40:43,598 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 59 statements into 1 equivalence classes. [2025-03-04 09:40:43,664 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 59 of 59 statements. [2025-03-04 09:40:43,664 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:40:43,664 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:40:43,672 INFO L256 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-04 09:40:43,674 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:40:43,680 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-04 09:40:43,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-04 09:40:43,990 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-03-04 09:40:44,001 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-04 09:40:44,002 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-03-04 09:40:44,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:40:44,003 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:40:44,003 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:40:44,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367023650] [2025-03-04 09:40:44,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367023650] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:40:44,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:40:44,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:40:44,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525239633] [2025-03-04 09:40:44,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:40:44,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 09:40:44,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:40:44,004 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 09:40:44,004 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:40:44,004 INFO L87 Difference]: Start difference. First operand 1673 states and 2196 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) [2025-03-04 09:40:45,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:40:45,667 INFO L93 Difference]: Finished difference Result 1646 states and 2170 transitions. [2025-03-04 09:40:45,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 09:40:45,668 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 [2025-03-04 09:40:45,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:40:45,671 INFO L225 Difference]: With dead ends: 1646 [2025-03-04 09:40:45,671 INFO L226 Difference]: Without dead ends: 1646 [2025-03-04 09:40:45,671 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 [2025-03-04 09:40:45,672 INFO L435 NwaCegarLoop]: 579 mSDtfsCounter, 810 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 1367 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 1132 SdHoareTripleChecker+Invalid, 1412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-03-04 09:40:45,672 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [815 Valid, 1132 Invalid, 1412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1367 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-03-04 09:40:45,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1646 states. [2025-03-04 09:40:45,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1646 to 1264. [2025-03-04 09:40:45,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1264 states, 819 states have (on average 1.735042735042735) internal successors, (1421), 1252 states have internal predecessors, (1421), 24 states have call successors, (24), 4 states have call predecessors, (24), 3 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) [2025-03-04 09:40:45,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1264 states to 1264 states and 1467 transitions. [2025-03-04 09:40:45,683 INFO L78 Accepts]: Start accepts. Automaton has 1264 states and 1467 transitions. Word has length 59 [2025-03-04 09:40:45,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:40:45,684 INFO L471 AbstractCegarLoop]: Abstraction has 1264 states and 1467 transitions. [2025-03-04 09:40:45,684 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) [2025-03-04 09:40:45,684 INFO L276 IsEmpty]: Start isEmpty. Operand 1264 states and 1467 transitions. [2025-03-04 09:40:45,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2025-03-04 09:40:45,684 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:40:45,684 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] [2025-03-04 09:40:45,695 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-03-04 09:40:45,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:40:45,885 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr529REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2025-03-04 09:40:45,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:40:45,885 INFO L85 PathProgramCache]: Analyzing trace with hash -2088047964, now seen corresponding path program 1 times [2025-03-04 09:40:45,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:40:45,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1544426973] [2025-03-04 09:40:45,886 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:40:45,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:40:45,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:40:45,888 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:40:45,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-03-04 09:40:46,015 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes. [2025-03-04 09:40:46,071 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements. [2025-03-04 09:40:46,071 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:40:46,071 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:40:46,081 INFO L256 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-04 09:40:46,084 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:40:46,088 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-04 09:40:46,101 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-04 09:40:46,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-03-04 09:40:46,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:40:46,126 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:40:46,126 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:40:46,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544426973] [2025-03-04 09:40:46,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544426973] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:40:46,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:40:46,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:40:46,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458347809] [2025-03-04 09:40:46,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:40:46,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 09:40:46,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:40:46,127 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 09:40:46,127 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:40:46,127 INFO L87 Difference]: Start difference. First operand 1264 states and 1467 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) [2025-03-04 09:40:47,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:40:47,597 INFO L93 Difference]: Finished difference Result 1263 states and 1466 transitions. [2025-03-04 09:40:47,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 09:40:47,600 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 [2025-03-04 09:40:47,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:40:47,603 INFO L225 Difference]: With dead ends: 1263 [2025-03-04 09:40:47,603 INFO L226 Difference]: Without dead ends: 1263 [2025-03-04 09:40:47,603 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 [2025-03-04 09:40:47,603 INFO L435 NwaCegarLoop]: 1100 mSDtfsCounter, 2 mSDsluCounter, 1818 mSDsCounter, 0 mSdLazyCounter, 1489 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2918 SdHoareTripleChecker+Invalid, 1490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-04 09:40:47,603 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2918 Invalid, 1490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1489 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-04 09:40:47,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1263 states. [2025-03-04 09:40:47,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1263 to 1263. [2025-03-04 09:40:47,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1263 states, 819 states have (on average 1.7338217338217339) internal successors, (1420), 1251 states have internal predecessors, (1420), 24 states have call successors, (24), 4 states have call predecessors, (24), 3 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) [2025-03-04 09:40:47,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1263 states to 1263 states and 1466 transitions. [2025-03-04 09:40:47,615 INFO L78 Accepts]: Start accepts. Automaton has 1263 states and 1466 transitions. Word has length 64 [2025-03-04 09:40:47,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:40:47,615 INFO L471 AbstractCegarLoop]: Abstraction has 1263 states and 1466 transitions. [2025-03-04 09:40:47,615 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) [2025-03-04 09:40:47,615 INFO L276 IsEmpty]: Start isEmpty. Operand 1263 states and 1466 transitions. [2025-03-04 09:40:47,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2025-03-04 09:40:47,615 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:40:47,615 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] [2025-03-04 09:40:47,625 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-03-04 09:40:47,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:40:47,816 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr530REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2025-03-04 09:40:47,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:40:47,816 INFO L85 PathProgramCache]: Analyzing trace with hash -2088047963, now seen corresponding path program 1 times [2025-03-04 09:40:47,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:40:47,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [484558722] [2025-03-04 09:40:47,816 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:40:47,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:40:47,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:40:47,818 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:40:47,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-03-04 09:40:47,930 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes. [2025-03-04 09:40:47,984 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements. [2025-03-04 09:40:47,984 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:40:47,984 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:40:47,991 INFO L256 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-04 09:40:47,993 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:40:47,999 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-04 09:40:48,010 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-03-04 09:40:48,016 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-04 09:40:48,051 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2025-03-04 09:40:48,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:40:48,063 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:40:48,063 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:40:48,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484558722] [2025-03-04 09:40:48,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484558722] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:40:48,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:40:48,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:40:48,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952078328] [2025-03-04 09:40:48,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:40:48,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 09:40:48,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:40:48,064 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 09:40:48,064 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:40:48,064 INFO L87 Difference]: Start difference. First operand 1263 states and 1466 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) [2025-03-04 09:40:49,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:40:49,783 INFO L93 Difference]: Finished difference Result 1262 states and 1465 transitions. [2025-03-04 09:40:49,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 09:40:49,784 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 [2025-03-04 09:40:49,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:40:49,785 INFO L225 Difference]: With dead ends: 1262 [2025-03-04 09:40:49,786 INFO L226 Difference]: Without dead ends: 1262 [2025-03-04 09:40:49,786 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 [2025-03-04 09:40:49,786 INFO L435 NwaCegarLoop]: 1100 mSDtfsCounter, 1 mSDsluCounter, 1861 mSDsCounter, 0 mSdLazyCounter, 1443 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2961 SdHoareTripleChecker+Invalid, 1444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-03-04 09:40:49,786 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2961 Invalid, 1444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1443 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-03-04 09:40:49,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1262 states. [2025-03-04 09:40:49,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1262 to 1262. [2025-03-04 09:40:49,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1262 states, 818 states have (on average 1.734718826405868) internal successors, (1419), 1250 states have internal predecessors, (1419), 24 states have call successors, (24), 4 states have call predecessors, (24), 3 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) [2025-03-04 09:40:49,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1262 states to 1262 states and 1465 transitions. [2025-03-04 09:40:49,795 INFO L78 Accepts]: Start accepts. Automaton has 1262 states and 1465 transitions. Word has length 64 [2025-03-04 09:40:49,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:40:49,795 INFO L471 AbstractCegarLoop]: Abstraction has 1262 states and 1465 transitions. [2025-03-04 09:40:49,795 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) [2025-03-04 09:40:49,795 INFO L276 IsEmpty]: Start isEmpty. Operand 1262 states and 1465 transitions. [2025-03-04 09:40:49,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2025-03-04 09:40:49,795 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:40:49,795 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] [2025-03-04 09:40:49,805 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-03-04 09:40:49,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:40:49,996 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr525REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2025-03-04 09:40:49,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:40:49,997 INFO L85 PathProgramCache]: Analyzing trace with hash 431346017, now seen corresponding path program 1 times [2025-03-04 09:40:49,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:40:49,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1977103927] [2025-03-04 09:40:49,997 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:40:49,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:40:49,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:40:49,999 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:40:49,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-03-04 09:40:50,114 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 72 statements into 1 equivalence classes. [2025-03-04 09:40:50,166 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 72 of 72 statements. [2025-03-04 09:40:50,166 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:40:50,166 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:40:50,174 INFO L256 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-04 09:40:50,176 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:40:50,180 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-04 09:40:50,219 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-03-04 09:40:50,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:40:50,236 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:40:50,236 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:40:50,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977103927] [2025-03-04 09:40:50,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1977103927] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:40:50,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:40:50,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-04 09:40:50,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725740683] [2025-03-04 09:40:50,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:40:50,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-04 09:40:50,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:40:50,238 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-04 09:40:50,238 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-04 09:40:50,238 INFO L87 Difference]: Start difference. First operand 1262 states and 1465 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) [2025-03-04 09:40:52,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:40:52,059 INFO L93 Difference]: Finished difference Result 1274 states and 1480 transitions. [2025-03-04 09:40:52,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-04 09:40:52,059 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 [2025-03-04 09:40:52,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:40:52,061 INFO L225 Difference]: With dead ends: 1274 [2025-03-04 09:40:52,061 INFO L226 Difference]: Without dead ends: 1274 [2025-03-04 09:40:52,061 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 [2025-03-04 09:40:52,062 INFO L435 NwaCegarLoop]: 1022 mSDtfsCounter, 61 mSDsluCounter, 2699 mSDsCounter, 0 mSdLazyCounter, 1791 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 3721 SdHoareTripleChecker+Invalid, 1798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-03-04 09:40:52,062 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 3721 Invalid, 1798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1791 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-03-04 09:40:52,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1274 states. [2025-03-04 09:40:52,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1274 to 1268. [2025-03-04 09:40:52,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1268 states, 823 states have (on average 1.732685297691373) internal successors, (1426), 1255 states have internal predecessors, (1426), 24 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (25), 9 states have call predecessors, (25), 22 states have call successors, (25) [2025-03-04 09:40:52,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1268 states to 1268 states and 1475 transitions. [2025-03-04 09:40:52,071 INFO L78 Accepts]: Start accepts. Automaton has 1268 states and 1475 transitions. Word has length 72 [2025-03-04 09:40:52,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:40:52,071 INFO L471 AbstractCegarLoop]: Abstraction has 1268 states and 1475 transitions. [2025-03-04 09:40:52,071 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) [2025-03-04 09:40:52,071 INFO L276 IsEmpty]: Start isEmpty. Operand 1268 states and 1475 transitions. [2025-03-04 09:40:52,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2025-03-04 09:40:52,072 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:40:52,072 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] [2025-03-04 09:40:52,081 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-03-04 09:40:52,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:40:52,272 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr526REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2025-03-04 09:40:52,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:40:52,273 INFO L85 PathProgramCache]: Analyzing trace with hash 431346018, now seen corresponding path program 1 times [2025-03-04 09:40:52,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:40:52,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1864211833] [2025-03-04 09:40:52,273 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:40:52,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:40:52,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:40:52,275 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:40:52,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-03-04 09:40:52,398 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 72 statements into 1 equivalence classes. [2025-03-04 09:40:52,454 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 72 of 72 statements. [2025-03-04 09:40:52,454 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:40:52,454 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:40:52,462 INFO L256 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:40:52,464 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:40:52,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:40:52,477 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:40:52,477 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:40:52,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864211833] [2025-03-04 09:40:52,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1864211833] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:40:52,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:40:52,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:40:52,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363024088] [2025-03-04 09:40:52,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:40:52,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:40:52,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:40:52,478 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:40:52,479 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:40:52,479 INFO L87 Difference]: Start difference. First operand 1268 states and 1475 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) [2025-03-04 09:40:52,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:40:52,519 INFO L93 Difference]: Finished difference Result 1265 states and 1469 transitions. [2025-03-04 09:40:52,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:40:52,521 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 [2025-03-04 09:40:52,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:40:52,524 INFO L225 Difference]: With dead ends: 1265 [2025-03-04 09:40:52,525 INFO L226 Difference]: Without dead ends: 1265 [2025-03-04 09:40:52,525 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 [2025-03-04 09:40:52,526 INFO L435 NwaCegarLoop]: 1100 mSDtfsCounter, 0 mSDsluCounter, 2195 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3295 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 09:40:52,526 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3295 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 09:40:52,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1265 states. [2025-03-04 09:40:52,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1265 to 1265. [2025-03-04 09:40:52,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1265 states, 820 states have (on average 1.7341463414634146) internal successors, (1422), 1253 states have internal predecessors, (1422), 24 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (23), 8 states have call predecessors, (23), 22 states have call successors, (23) [2025-03-04 09:40:52,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1265 states to 1265 states and 1469 transitions. [2025-03-04 09:40:52,539 INFO L78 Accepts]: Start accepts. Automaton has 1265 states and 1469 transitions. Word has length 72 [2025-03-04 09:40:52,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:40:52,540 INFO L471 AbstractCegarLoop]: Abstraction has 1265 states and 1469 transitions. [2025-03-04 09:40:52,540 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) [2025-03-04 09:40:52,540 INFO L276 IsEmpty]: Start isEmpty. Operand 1265 states and 1469 transitions. [2025-03-04 09:40:52,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2025-03-04 09:40:52,540 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:40:52,540 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:40:52,550 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-03-04 09:40:52,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:40:52,741 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr525REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2025-03-04 09:40:52,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:40:52,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1880542786, now seen corresponding path program 1 times [2025-03-04 09:40:52,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:40:52,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1906551920] [2025-03-04 09:40:52,742 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:40:52,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:40:52,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:40:52,743 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:40:52,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-03-04 09:40:52,862 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 73 statements into 1 equivalence classes. [2025-03-04 09:40:52,918 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 73 of 73 statements. [2025-03-04 09:40:52,918 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:40:52,918 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:40:52,926 INFO L256 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 09:40:52,927 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:40:52,941 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:40:52,942 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:40:52,976 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:40:52,976 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:40:52,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906551920] [2025-03-04 09:40:52,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906551920] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 09:40:52,976 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 09:40:52,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2025-03-04 09:40:52,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125557105] [2025-03-04 09:40:52,976 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 09:40:52,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-04 09:40:52,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:40:52,977 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-04 09:40:52,977 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-03-04 09:40:52,977 INFO L87 Difference]: Start difference. First operand 1265 states and 1469 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) [2025-03-04 09:40:53,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:40:53,084 INFO L93 Difference]: Finished difference Result 1277 states and 1486 transitions. [2025-03-04 09:40:53,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-04 09:40:53,084 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 [2025-03-04 09:40:53,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:40:53,087 INFO L225 Difference]: With dead ends: 1277 [2025-03-04 09:40:53,087 INFO L226 Difference]: Without dead ends: 1277 [2025-03-04 09:40:53,087 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 [2025-03-04 09:40:53,088 INFO L435 NwaCegarLoop]: 1100 mSDtfsCounter, 7 mSDsluCounter, 3291 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 4391 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 09:40:53,088 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 4391 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 09:40:53,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1277 states. [2025-03-04 09:40:53,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1277 to 1275. [2025-03-04 09:40:53,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1275 states, 829 states have (on average 1.7334137515078407) internal successors, (1437), 1262 states have internal predecessors, (1437), 24 states have call successors, (24), 5 states have call predecessors, (24), 5 states have return successors, (23), 8 states have call predecessors, (23), 22 states have call successors, (23) [2025-03-04 09:40:53,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1275 states to 1275 states and 1484 transitions. [2025-03-04 09:40:53,109 INFO L78 Accepts]: Start accepts. Automaton has 1275 states and 1484 transitions. Word has length 73 [2025-03-04 09:40:53,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:40:53,109 INFO L471 AbstractCegarLoop]: Abstraction has 1275 states and 1484 transitions. [2025-03-04 09:40:53,110 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) [2025-03-04 09:40:53,110 INFO L276 IsEmpty]: Start isEmpty. Operand 1275 states and 1484 transitions. [2025-03-04 09:40:53,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2025-03-04 09:40:53,110 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:40:53,110 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] [2025-03-04 09:40:53,120 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-03-04 09:40:53,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:40:53,311 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr525REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2025-03-04 09:40:53,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:40:53,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1145470815, now seen corresponding path program 2 times [2025-03-04 09:40:53,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:40:53,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1715754023] [2025-03-04 09:40:53,312 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 09:40:53,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:40:53,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:40:53,314 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:40:53,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-03-04 09:40:53,460 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 76 statements into 2 equivalence classes. [2025-03-04 09:41:21,042 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 76 of 76 statements. [2025-03-04 09:41:21,042 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 09:41:21,042 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:41:21,060 INFO L256 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-04 09:41:21,062 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:41:21,117 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-04 09:41:21,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-03-04 09:41:21,127 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-04 09:41:21,233 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:41:21,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2025-03-04 09:41:21,261 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2025-03-04 09:41:21,272 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-04 09:41:21,272 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:41:21,321 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2025-03-04 09:41:21,322 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2025-03-04 09:41:21,332 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1262 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_#t~mem36#1.base| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_1262) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))) is different from false [2025-03-04 09:41:21,340 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:41:21,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715754023] [2025-03-04 09:41:21,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715754023] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 09:41:21,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2107833756] [2025-03-04 09:41:21,340 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 09:41:21,340 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-03-04 09:41:21,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2025-03-04 09:41:21,343 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-03-04 09:41:21,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2025-03-04 09:41:21,524 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 76 statements into 2 equivalence classes. [2025-03-04 09:41:22,238 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 76 of 76 statements. [2025-03-04 09:41:22,238 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 09:41:22,238 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:41:22,260 INFO L256 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-04 09:41:22,261 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:41:22,359 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:41:22,359 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:41:22,522 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:41:22,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2107833756] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 09:41:22,522 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 09:41:22,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 24 [2025-03-04 09:41:22,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765715937] [2025-03-04 09:41:22,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 09:41:22,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-04 09:41:22,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:41:22,523 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-04 09:41:22,523 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=513, Unknown=1, NotChecked=46, Total=650 [2025-03-04 09:41:22,523 INFO L87 Difference]: Start difference. First operand 1275 states and 1484 transitions. Second operand has 24 states, 23 states have (on average 6.043478260869565) internal successors, (139), 23 states have internal predecessors, (139), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-04 09:41:29,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:41:29,383 INFO L93 Difference]: Finished difference Result 1299 states and 1515 transitions. [2025-03-04 09:41:29,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-03-04 09:41:29,383 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 6.043478260869565) internal successors, (139), 23 states have internal predecessors, (139), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 76 [2025-03-04 09:41:29,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:41:29,385 INFO L225 Difference]: With dead ends: 1299 [2025-03-04 09:41:29,385 INFO L226 Difference]: Without dead ends: 1295 [2025-03-04 09:41:29,386 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=413, Invalid=2242, Unknown=1, NotChecked=100, Total=2756 [2025-03-04 09:41:29,386 INFO L435 NwaCegarLoop]: 660 mSDtfsCounter, 856 mSDsluCounter, 9980 mSDsCounter, 0 mSdLazyCounter, 8739 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 877 SdHoareTripleChecker+Valid, 10640 SdHoareTripleChecker+Invalid, 8762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 8739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2025-03-04 09:41:29,386 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [877 Valid, 10640 Invalid, 8762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 8739 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2025-03-04 09:41:29,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1295 states. [2025-03-04 09:41:29,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1295 to 1283. [2025-03-04 09:41:29,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1283 states, 838 states have (on average 1.727923627684964) internal successors, (1448), 1270 states have internal predecessors, (1448), 24 states have call successors, (24), 5 states have call predecessors, (24), 5 states have return successors, (23), 8 states have call predecessors, (23), 22 states have call successors, (23) [2025-03-04 09:41:29,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1283 states to 1283 states and 1495 transitions. [2025-03-04 09:41:29,397 INFO L78 Accepts]: Start accepts. Automaton has 1283 states and 1495 transitions. Word has length 76 [2025-03-04 09:41:29,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:41:29,397 INFO L471 AbstractCegarLoop]: Abstraction has 1283 states and 1495 transitions. [2025-03-04 09:41:29,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 6.043478260869565) internal successors, (139), 23 states have internal predecessors, (139), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-04 09:41:29,397 INFO L276 IsEmpty]: Start isEmpty. Operand 1283 states and 1495 transitions. [2025-03-04 09:41:29,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2025-03-04 09:41:29,397 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:41:29,397 INFO L218 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:41:29,424 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-03-04 09:41:29,606 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (23)] Ended with exit code 0 [2025-03-04 09:41:29,798 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,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2025-03-04 09:41:29,798 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr526REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2025-03-04 09:41:29,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:41:29,799 INFO L85 PathProgramCache]: Analyzing trace with hash 2143943554, now seen corresponding path program 1 times [2025-03-04 09:41:29,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:41:29,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [577197544] [2025-03-04 09:41:29,799 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:41:29,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:41:29,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:41:29,801 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:41:29,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-03-04 09:41:29,942 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 82 statements into 1 equivalence classes. [2025-03-04 09:41:30,020 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 82 of 82 statements. [2025-03-04 09:41:30,020 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:41:30,020 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:41:30,030 INFO L256 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-04 09:41:30,032 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:41:30,116 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:41:30,116 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:41:30,452 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:41:30,453 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:41:30,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577197544] [2025-03-04 09:41:30,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [577197544] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 09:41:30,453 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 09:41:30,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2025-03-04 09:41:30,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527331302] [2025-03-04 09:41:30,453 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 09:41:30,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-03-04 09:41:30,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:41:30,453 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-03-04 09:41:30,453 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2025-03-04 09:41:30,454 INFO L87 Difference]: Start difference. First operand 1283 states and 1495 transitions. Second operand has 26 states, 26 states have (on average 3.576923076923077) internal successors, (93), 26 states have internal predecessors, (93), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-04 09:41:31,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:41:31,496 INFO L93 Difference]: Finished difference Result 1307 states and 1534 transitions. [2025-03-04 09:41:31,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-03-04 09:41:31,497 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.576923076923077) internal successors, (93), 26 states have internal predecessors, (93), 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 82 [2025-03-04 09:41:31,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:41:31,499 INFO L225 Difference]: With dead ends: 1307 [2025-03-04 09:41:31,499 INFO L226 Difference]: Without dead ends: 1301 [2025-03-04 09:41:31,500 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=728, Invalid=1434, Unknown=0, NotChecked=0, Total=2162 [2025-03-04 09:41:31,501 INFO L435 NwaCegarLoop]: 1100 mSDtfsCounter, 15 mSDsluCounter, 14254 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 15354 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-04 09:41:31,501 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 15354 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-04 09:41:31,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1301 states. [2025-03-04 09:41:31,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1301 to 1301. [2025-03-04 09:41:31,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1301 states, 856 states have (on average 1.7184579439252337) internal successors, (1471), 1288 states have internal predecessors, (1471), 24 states have call successors, (24), 5 states have call predecessors, (24), 5 states have return successors, (23), 8 states have call predecessors, (23), 22 states have call successors, (23) [2025-03-04 09:41:31,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1301 states to 1301 states and 1518 transitions. [2025-03-04 09:41:31,512 INFO L78 Accepts]: Start accepts. Automaton has 1301 states and 1518 transitions. Word has length 82 [2025-03-04 09:41:31,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:41:31,512 INFO L471 AbstractCegarLoop]: Abstraction has 1301 states and 1518 transitions. [2025-03-04 09:41:31,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.576923076923077) internal successors, (93), 26 states have internal predecessors, (93), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-04 09:41:31,512 INFO L276 IsEmpty]: Start isEmpty. Operand 1301 states and 1518 transitions. [2025-03-04 09:41:31,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2025-03-04 09:41:31,513 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:41:31,513 INFO L218 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:41:31,525 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2025-03-04 09:41:31,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:41:31,714 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr526REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2025-03-04 09:41:31,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:41:31,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1230633282, now seen corresponding path program 2 times [2025-03-04 09:41:31,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:41:31,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1575895382] [2025-03-04 09:41:31,714 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 09:41:31,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:41:31,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:41:31,716 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:41:31,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-03-04 09:41:31,873 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 94 statements into 2 equivalence classes. [2025-03-04 09:41:43,561 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 94 of 94 statements. [2025-03-04 09:41:43,562 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 09:41:43,562 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:41:43,581 INFO L256 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 64 conjuncts are in the unsatisfiable core [2025-03-04 09:41:43,589 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:41:43,667 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-04 09:41:43,667 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-03-04 09:41:43,672 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-04 09:41:43,688 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-04 09:41:43,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-03-04 09:41:43,746 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2025-03-04 09:41:43,750 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2025-03-04 09:41:44,032 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:41:44,032 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2025-03-04 09:41:44,037 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2025-03-04 09:41:44,061 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2025-03-04 09:41:44,064 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2025-03-04 09:41:44,077 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2025-03-04 09:41:44,077 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:41:44,348 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_1889 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1888 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_1888) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_1889) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_1888 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_1888) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd .cse1 (_ bv16 32)) (bvadd .cse1 (_ bv20 32))))))) is different from false [2025-03-04 09:41:44,352 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:41:44,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575895382] [2025-03-04 09:41:44,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575895382] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 09:41:44,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1884878008] [2025-03-04 09:41:44,353 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 09:41:44,353 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-03-04 09:41:44,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2025-03-04 09:41:44,354 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-03-04 09:41:44,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2025-03-04 09:41:44,603 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 94 statements into 2 equivalence classes. [2025-03-04 09:41:45,364 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 94 of 94 statements. [2025-03-04 09:41:45,364 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 09:41:45,364 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:41:45,389 INFO L256 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-03-04 09:41:45,391 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:41:45,889 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:41:45,889 INFO L312 TraceCheckSpWp]: Computing backward predicates...