./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-3.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_OAT_test10-3.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 93cc62483e7301c05d7788622f4f3fa5962cd13b8481778ecaf6adfc0416e51e --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 09:30:31,284 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 09:30:31,340 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-04 09:30:31,347 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 09:30:31,348 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 09:30:31,371 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 09:30:31,372 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 09:30:31,372 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 09:30:31,372 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 09:30:31,373 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 09:30:31,373 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 09:30:31,373 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 09:30:31,373 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 09:30:31,373 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 09:30:31,373 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 09:30:31,373 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 09:30:31,373 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 09:30:31,374 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 09:30:31,374 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 09:30:31,374 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 09:30:31,374 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-04 09:30:31,374 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-04 09:30:31,374 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-04 09:30:31,374 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 09:30:31,374 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-04 09:30:31,374 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 09:30:31,374 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 09:30:31,374 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 09:30:31,374 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 09:30:31,374 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 09:30:31,374 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 09:30:31,374 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 09:30:31,375 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 09:30:31,375 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 09:30:31,375 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 09:30:31,375 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 09:30:31,375 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 09:30:31,375 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 09:30:31,375 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 09:30:31,375 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 09:30:31,375 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 09:30:31,375 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 09:30:31,375 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 -> 93cc62483e7301c05d7788622f4f3fa5962cd13b8481778ecaf6adfc0416e51e [2025-03-04 09:30:31,611 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 09:30:31,619 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 09:30:31,621 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 09:30:31,622 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 09:30:31,622 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 09:30:31,624 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-3.i [2025-03-04 09:30:32,726 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9cf3d00b3/4d0ee2e0c27d4a2596ffda98ee6c61a0/FLAGf2806a812 [2025-03-04 09:30:33,031 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 09:30:33,032 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-3.i [2025-03-04 09:30:33,043 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9cf3d00b3/4d0ee2e0c27d4a2596ffda98ee6c61a0/FLAGf2806a812 [2025-03-04 09:30:33,308 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9cf3d00b3/4d0ee2e0c27d4a2596ffda98ee6c61a0 [2025-03-04 09:30:33,310 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 09:30:33,311 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 09:30:33,312 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 09:30:33,312 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 09:30:33,315 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 09:30:33,315 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:30:33" (1/1) ... [2025-03-04 09:30:33,316 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3428501a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:30:33, skipping insertion in model container [2025-03-04 09:30:33,316 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:30:33" (1/1) ... [2025-03-04 09:30:33,344 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 09:30:33,695 WARN 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 09:30:33,727 WARN 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 09:30:33,732 WARN 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 09:30:33,736 WARN 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 09:30:33,743 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 09:30:33,769 WARN 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 09:30:33,771 WARN 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 09:30:33,774 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:30:33,779 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:30:33,799 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 09:30:33,801 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:30:33,803 WARN 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 09:30:33,803 WARN 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 09:30:33,816 WARN 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 09:30:33,816 WARN 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 09:30:33,818 WARN 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 09:30:33,818 WARN 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 09:30:33,829 WARN 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 09:30:33,835 WARN 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 09:30:33,837 WARN 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 09:30:33,837 WARN 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 09:30:33,849 WARN 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 09:30:33,849 WARN 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 09:30:33,850 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:30:33,850 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:30:33,851 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:30:33,852 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:30:33,853 WARN 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 09:30:33,854 WARN 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 09:30:33,854 WARN 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 09:30:33,856 WARN 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 09:30:33,856 WARN 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 09:30:33,857 WARN 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 09:30:33,857 WARN 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 09:30:33,858 WARN 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 09:30:33,870 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:30:33,884 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 09:30:33,885 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1929b31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:30:33, skipping insertion in model container [2025-03-04 09:30:33,885 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 09:30:33,885 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-03-04 09:30:33,888 INFO L158 Benchmark]: Toolchain (without parser) took 575.48ms. Allocated memory is still 167.8MB. Free memory was 126.7MB in the beginning and 97.3MB in the end (delta: 29.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-03-04 09:30:33,890 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 201.3MB. Free memory is still 125.5MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 09:30:33,890 INFO L158 Benchmark]: CACSL2BoogieTranslator took 573.78ms. Allocated memory is still 167.8MB. Free memory was 126.7MB in the beginning and 97.3MB in the end (delta: 29.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-03-04 09:30:33,891 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 201.3MB. Free memory is still 125.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 573.78ms. Allocated memory is still 167.8MB. Free memory was 126.7MB in the beginning and 97.3MB in the end (delta: 29.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 760]: 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_OAT_test10-3.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 93cc62483e7301c05d7788622f4f3fa5962cd13b8481778ecaf6adfc0416e51e --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 09:30:35,545 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 09:30:35,606 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-03-04 09:30:35,613 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 09:30:35,613 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 09:30:35,638 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 09:30:35,639 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 09:30:35,639 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 09:30:35,639 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 09:30:35,639 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 09:30:35,639 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 09:30:35,640 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 09:30:35,640 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 09:30:35,640 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 09:30:35,640 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 09:30:35,640 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 09:30:35,640 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 09:30:35,640 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 09:30:35,640 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 09:30:35,641 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 09:30:35,641 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-04 09:30:35,641 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-04 09:30:35,641 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-04 09:30:35,641 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 09:30:35,641 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-04 09:30:35,641 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-04 09:30:35,641 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-04 09:30:35,641 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 09:30:35,641 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 09:30:35,641 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 09:30:35,641 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 09:30:35,641 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 09:30:35,642 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 09:30:35,642 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 09:30:35,642 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 09:30:35,642 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 09:30:35,642 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 09:30:35,642 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 09:30:35,642 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-04 09:30:35,642 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-04 09:30:35,642 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 09:30:35,642 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 09:30:35,642 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 09:30:35,642 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 09:30:35,642 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 -> 93cc62483e7301c05d7788622f4f3fa5962cd13b8481778ecaf6adfc0416e51e [2025-03-04 09:30:35,905 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 09:30:35,913 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 09:30:35,916 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 09:30:35,917 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 09:30:35,917 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 09:30:35,918 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-3.i [2025-03-04 09:30:37,087 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13e7d7c19/db0fbdc865d24c3fbc46f99cd9ad026f/FLAG5547a6728 [2025-03-04 09:30:37,397 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 09:30:37,397 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-3.i [2025-03-04 09:30:37,416 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13e7d7c19/db0fbdc865d24c3fbc46f99cd9ad026f/FLAG5547a6728 [2025-03-04 09:30:37,658 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13e7d7c19/db0fbdc865d24c3fbc46f99cd9ad026f [2025-03-04 09:30:37,660 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 09:30:37,661 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 09:30:37,662 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 09:30:37,662 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 09:30:37,665 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 09:30:37,665 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:30:37" (1/1) ... [2025-03-04 09:30:37,666 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78314dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:30:37, skipping insertion in model container [2025-03-04 09:30:37,666 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:30:37" (1/1) ... [2025-03-04 09:30:37,699 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 09:30:37,971 WARN 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 09:30:37,994 WARN 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 09:30:37,998 WARN 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 09:30:38,002 WARN 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 09:30:38,008 WARN 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 09:30:38,032 WARN 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 09:30:38,037 WARN 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 09:30:38,039 WARN 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 09:30:38,046 WARN 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 09:30:38,077 WARN 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 09:30:38,077 WARN 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 09:30:38,079 WARN 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 09:30:38,079 WARN 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 09:30:38,094 WARN 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 09:30:38,095 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:30:38,097 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:30:38,098 WARN 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 09:30:38,110 WARN 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 09:30:38,112 WARN 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 09:30:38,113 WARN 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 09:30:38,113 WARN 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 09:30:38,124 WARN 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 09:30:38,124 WARN 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 09:30:38,125 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:30:38,126 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:30:38,130 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:30:38,132 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:30:38,133 WARN 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 09:30:38,134 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:30:38,136 WARN 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 09:30:38,139 WARN 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 09:30:38,139 WARN 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 09:30:38,139 WARN 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 09:30:38,140 WARN 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 09:30:38,141 WARN 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 09:30:38,151 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:30:38,164 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-03-04 09:30:38,174 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 09:30:38,198 WARN 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 09:30:38,206 WARN 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 09:30:38,221 WARN 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 09:30:38,222 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:30:38,224 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:30:38,237 WARN 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 09:30:38,238 WARN 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 09:30:38,239 WARN 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 09:30:38,240 WARN 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 09:30:38,249 WARN 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 09:30:38,250 WARN 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 09:30:38,251 WARN 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 09:30:38,251 WARN 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 09:30:38,255 WARN 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 09:30:38,255 WARN 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 09:30:38,256 WARN 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 09:30:38,256 WARN 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 09:30:38,261 WARN 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 09:30:38,261 WARN 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 09:30:38,262 WARN 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 09:30:38,262 WARN 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 09:30:38,266 WARN 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 09:30:38,267 WARN 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 09:30:38,268 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:30:38,268 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:30:38,269 WARN 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 09:30:38,271 WARN 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 09:30:38,271 WARN 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 09:30:38,272 WARN 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 09:30:38,272 WARN 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 09:30:38,273 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:30:38,274 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:30:38,275 WARN 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 09:30:38,275 WARN 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 09:30:38,277 WARN 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 09:30:38,281 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:30:38,286 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 09:30:38,362 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:30:38,415 INFO L204 MainTranslator]: Completed translation [2025-03-04 09:30:38,415 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:30:38 WrapperNode [2025-03-04 09:30:38,416 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 09:30:38,417 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 09:30:38,417 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 09:30:38,417 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 09:30:38,422 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:30:38" (1/1) ... [2025-03-04 09:30:38,458 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:30:38" (1/1) ... [2025-03-04 09:30:38,543 INFO L138 Inliner]: procedures = 180, calls = 606, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2470 [2025-03-04 09:30:38,545 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 09:30:38,545 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 09:30:38,546 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 09:30:38,546 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 09:30:38,551 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:30:38" (1/1) ... [2025-03-04 09:30:38,552 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:30:38" (1/1) ... [2025-03-04 09:30:38,564 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:30:38" (1/1) ... [2025-03-04 09:30:38,679 INFO L175 MemorySlicer]: Split 574 memory accesses to 3 slices as follows [2, 106, 466]. 81 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 102 writes are split as follows [0, 4, 98]. [2025-03-04 09:30:38,682 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:30:38" (1/1) ... [2025-03-04 09:30:38,683 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:30:38" (1/1) ... [2025-03-04 09:30:38,746 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:30:38" (1/1) ... [2025-03-04 09:30:38,750 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:30:38" (1/1) ... [2025-03-04 09:30:38,759 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:30:38" (1/1) ... [2025-03-04 09:30:38,764 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:30:38" (1/1) ... [2025-03-04 09:30:38,775 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 09:30:38,776 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 09:30:38,776 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 09:30:38,776 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 09:30:38,777 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:30:38" (1/1) ... [2025-03-04 09:30:38,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 09:30:38,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:30:38,801 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 09:30:38,804 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 09:30:38,821 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2025-03-04 09:30:38,821 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2025-03-04 09:30:38,821 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2025-03-04 09:30:38,821 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2025-03-04 09:30:38,821 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2025-03-04 09:30:38,822 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-03-04 09:30:38,822 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-03-04 09:30:38,822 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2025-03-04 09:30:38,822 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-04 09:30:38,822 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-04 09:30:38,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-03-04 09:30:38,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-03-04 09:30:38,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2025-03-04 09:30:38,822 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-03-04 09:30:38,822 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-03-04 09:30:38,822 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2025-03-04 09:30:38,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-04 09:30:38,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 09:30:38,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-04 09:30:38,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-04 09:30:38,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-04 09:30:38,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-04 09:30:38,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-04 09:30:38,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-04 09:30:38,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-04 09:30:38,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-04 09:30:38,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-03-04 09:30:38,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-03-04 09:30:38,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2025-03-04 09:30:38,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-04 09:30:38,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-03-04 09:30:38,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2025-03-04 09:30:38,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 09:30:38,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 09:30:39,104 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 09:30:39,106 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 09:30:44,758 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L731: 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 09:30:44,972 INFO L? ?]: Removed 2433 outVars from TransFormulas that were not future-live. [2025-03-04 09:30:44,972 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 09:30:45,019 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 09:30:45,019 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 09:30:45,019 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 09:30:45 BoogieIcfgContainer [2025-03-04 09:30:45,020 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 09:30:45,021 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 09:30:45,021 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 09:30:45,025 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 09:30:45,025 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 09:30:37" (1/3) ... [2025-03-04 09:30:45,025 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30a68942 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 09:30:45, skipping insertion in model container [2025-03-04 09:30:45,025 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:30:38" (2/3) ... [2025-03-04 09:30:45,026 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30a68942 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 09:30:45, skipping insertion in model container [2025-03-04 09:30:45,026 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 09:30:45" (3/3) ... [2025-03-04 09:30:45,027 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test10-3.i [2025-03-04 09:30:45,038 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 09:30:45,039 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_OAT_test10-3.i that has 6 procedures, 2451 locations, 1 initial locations, 87 loop locations, and 1189 error locations. [2025-03-04 09:30:45,107 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 09:30:45,115 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;@2a68ea1f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 09:30:45,116 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1189 error locations. [2025-03-04 09:30:45,124 INFO L276 IsEmpty]: Start isEmpty. Operand has 2441 states, 1240 states have (on average 2.2056451612903225) internal successors, (2735), 2427 states have internal predecessors, (2735), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2025-03-04 09:30:45,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-03-04 09:30:45,129 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:30:45,129 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-03-04 09:30:45,130 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1186REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-04 09:30:45,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:30:45,133 INFO L85 PathProgramCache]: Analyzing trace with hash 2772423, now seen corresponding path program 1 times [2025-03-04 09:30:45,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:30:45,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1230931916] [2025-03-04 09:30:45,142 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:30:45,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:30:45,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:30:45,145 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 09:30:45,147 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 09:30:45,308 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-04 09:30:45,315 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-04 09:30:45,317 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:30:45,317 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:30:45,321 INFO L256 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:30:45,327 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:30:45,347 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 09:30:45,361 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 09:30:45,361 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:30:45,362 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:30:45,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230931916] [2025-03-04 09:30:45,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230931916] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:30:45,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:30:45,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 09:30:45,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182091563] [2025-03-04 09:30:45,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:30:45,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:30:45,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:30:45,386 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:30:45,386 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:30:45,391 INFO L87 Difference]: Start difference. First operand has 2441 states, 1240 states have (on average 2.2056451612903225) internal successors, (2735), 2427 states have internal predecessors, (2735), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) 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 09:30:48,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:30:48,077 INFO L93 Difference]: Finished difference Result 3272 states and 3472 transitions. [2025-03-04 09:30:48,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:30:48,079 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 09:30:48,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:30:48,100 INFO L225 Difference]: With dead ends: 3272 [2025-03-04 09:30:48,101 INFO L226 Difference]: Without dead ends: 3270 [2025-03-04 09:30:48,102 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 09:30:48,106 INFO L435 NwaCegarLoop]: 1660 mSDtfsCounter, 2305 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 1665 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2315 SdHoareTripleChecker+Valid, 2226 SdHoareTripleChecker+Invalid, 1690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2025-03-04 09:30:48,107 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2315 Valid, 2226 Invalid, 1690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1665 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2025-03-04 09:30:48,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3270 states. [2025-03-04 09:30:48,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3270 to 2583. [2025-03-04 09:30:48,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2583 states, 1410 states have (on average 2.051063829787234) internal successors, (2892), 2567 states have internal predecessors, (2892), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2025-03-04 09:30:48,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2583 states to 2583 states and 2924 transitions. [2025-03-04 09:30:48,245 INFO L78 Accepts]: Start accepts. Automaton has 2583 states and 2924 transitions. Word has length 3 [2025-03-04 09:30:48,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:30:48,246 INFO L471 AbstractCegarLoop]: Abstraction has 2583 states and 2924 transitions. [2025-03-04 09:30:48,246 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 09:30:48,246 INFO L276 IsEmpty]: Start isEmpty. Operand 2583 states and 2924 transitions. [2025-03-04 09:30:48,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-03-04 09:30:48,246 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:30:48,247 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-03-04 09:30:48,255 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 09:30:48,447 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 09:30:48,447 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1187REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-04 09:30:48,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:30:48,448 INFO L85 PathProgramCache]: Analyzing trace with hash 2772424, now seen corresponding path program 1 times [2025-03-04 09:30:48,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:30:48,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1417664011] [2025-03-04 09:30:48,448 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:30:48,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:30:48,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:30:48,450 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 09:30:48,451 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 09:30:48,585 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-04 09:30:48,588 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-04 09:30:48,589 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:30:48,589 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:30:48,590 INFO L256 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 09:30:48,592 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:30:48,606 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 09:30:48,619 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 09:30:48,619 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:30:48,619 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:30:48,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417664011] [2025-03-04 09:30:48,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1417664011] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:30:48,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:30:48,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 09:30:48,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629036410] [2025-03-04 09:30:48,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:30:48,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:30:48,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:30:48,621 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:30:48,621 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:30:48,622 INFO L87 Difference]: Start difference. First operand 2583 states and 2924 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 09:30:52,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:30:52,431 INFO L93 Difference]: Finished difference Result 3376 states and 3797 transitions. [2025-03-04 09:30:52,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:30:52,431 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 09:30:52,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:30:52,440 INFO L225 Difference]: With dead ends: 3376 [2025-03-04 09:30:52,440 INFO L226 Difference]: Without dead ends: 3376 [2025-03-04 09:30:52,440 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 09:30:52,440 INFO L435 NwaCegarLoop]: 2211 mSDtfsCounter, 867 mSDsluCounter, 1388 mSDsCounter, 0 mSdLazyCounter, 1519 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 870 SdHoareTripleChecker+Valid, 3599 SdHoareTripleChecker+Invalid, 1530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2025-03-04 09:30:52,440 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [870 Valid, 3599 Invalid, 1530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1519 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2025-03-04 09:30:52,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3376 states. [2025-03-04 09:30:52,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3376 to 3048. [2025-03-04 09:30:52,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3048 states, 1873 states have (on average 2.006940736785905) internal successors, (3759), 3029 states have internal predecessors, (3759), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2025-03-04 09:30:52,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3048 states to 3048 states and 3797 transitions. [2025-03-04 09:30:52,484 INFO L78 Accepts]: Start accepts. Automaton has 3048 states and 3797 transitions. Word has length 3 [2025-03-04 09:30:52,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:30:52,485 INFO L471 AbstractCegarLoop]: Abstraction has 3048 states and 3797 transitions. [2025-03-04 09:30:52,485 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 09:30:52,485 INFO L276 IsEmpty]: Start isEmpty. Operand 3048 states and 3797 transitions. [2025-03-04 09:30:52,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-03-04 09:30:52,485 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:30:52,485 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:30:52,492 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 09:30:52,686 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 09:30:52,686 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1183REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-04 09:30:52,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:30:52,686 INFO L85 PathProgramCache]: Analyzing trace with hash 674207459, now seen corresponding path program 1 times [2025-03-04 09:30:52,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:30:52,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1403824955] [2025-03-04 09:30:52,687 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:30:52,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:30:52,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:30:52,689 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 09:30:52,690 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 09:30:52,864 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-04 09:30:52,873 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-04 09:30:52,874 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:30:52,874 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:30:52,875 INFO L256 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-04 09:30:52,877 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:30:52,882 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 09:30:52,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-04 09:30:52,941 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 09:30:52,956 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-04 09:30:52,956 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 09:30:52,970 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 09:30:52,971 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:30:52,971 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:30:52,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403824955] [2025-03-04 09:30:52,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403824955] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:30:52,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:30:52,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:30:52,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667322043] [2025-03-04 09:30:52,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:30:52,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:30:52,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:30:52,972 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:30:52,974 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:30:52,975 INFO L87 Difference]: Start difference. First operand 3048 states and 3797 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 09:30:59,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:30:59,382 INFO L93 Difference]: Finished difference Result 5297 states and 6196 transitions. [2025-03-04 09:30:59,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:30:59,383 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 09:30:59,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:30:59,394 INFO L225 Difference]: With dead ends: 5297 [2025-03-04 09:30:59,395 INFO L226 Difference]: Without dead ends: 5297 [2025-03-04 09:30:59,395 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 09:30:59,395 INFO L435 NwaCegarLoop]: 1166 mSDtfsCounter, 2368 mSDsluCounter, 2185 mSDsCounter, 0 mSdLazyCounter, 4325 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2377 SdHoareTripleChecker+Valid, 3351 SdHoareTripleChecker+Invalid, 4351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 4325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2025-03-04 09:30:59,395 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2377 Valid, 3351 Invalid, 4351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 4325 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2025-03-04 09:30:59,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5297 states. [2025-03-04 09:30:59,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5297 to 3760. [2025-03-04 09:30:59,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3760 states, 2585 states have (on average 2.0336557059961313) internal successors, (5257), 3735 states have internal predecessors, (5257), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-04 09:30:59,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3760 states to 3760 states and 5307 transitions. [2025-03-04 09:30:59,452 INFO L78 Accepts]: Start accepts. Automaton has 3760 states and 5307 transitions. Word has length 7 [2025-03-04 09:30:59,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:30:59,452 INFO L471 AbstractCegarLoop]: Abstraction has 3760 states and 5307 transitions. [2025-03-04 09:30:59,452 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 09:30:59,452 INFO L276 IsEmpty]: Start isEmpty. Operand 3760 states and 5307 transitions. [2025-03-04 09:30:59,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-03-04 09:30:59,453 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:30:59,453 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:30:59,463 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 09:30:59,653 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 09:30:59,653 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1180REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-04 09:30:59,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:30:59,655 INFO L85 PathProgramCache]: Analyzing trace with hash -574402570, now seen corresponding path program 1 times [2025-03-04 09:30:59,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:30:59,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [216132735] [2025-03-04 09:30:59,655 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:30:59,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:30:59,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:30:59,658 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 09:30:59,659 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 09:30:59,797 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-04 09:30:59,806 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-04 09:30:59,806 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:30:59,806 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:30:59,807 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:30:59,810 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:30:59,816 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 09:30:59,824 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 09:30:59,824 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:30:59,824 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:30:59,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216132735] [2025-03-04 09:30:59,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216132735] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:30:59,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:30:59,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 09:30:59,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740976827] [2025-03-04 09:30:59,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:30:59,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:30:59,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:30:59,825 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:30:59,825 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:30:59,825 INFO L87 Difference]: Start difference. First operand 3760 states and 5307 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 09:31:01,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:31:01,893 INFO L93 Difference]: Finished difference Result 4464 states and 5969 transitions. [2025-03-04 09:31:01,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:31:01,894 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 09:31:01,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:31:01,904 INFO L225 Difference]: With dead ends: 4464 [2025-03-04 09:31:01,905 INFO L226 Difference]: Without dead ends: 4464 [2025-03-04 09:31:01,905 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 09:31:01,907 INFO L435 NwaCegarLoop]: 2389 mSDtfsCounter, 1906 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 1613 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1916 SdHoareTripleChecker+Valid, 3149 SdHoareTripleChecker+Invalid, 1712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-03-04 09:31:01,908 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1916 Valid, 3149 Invalid, 1712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1613 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-03-04 09:31:01,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4464 states. [2025-03-04 09:31:01,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4464 to 3668. [2025-03-04 09:31:01,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3668 states, 2585 states have (on average 1.9504835589941973) internal successors, (5042), 3643 states have internal predecessors, (5042), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-04 09:31:01,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3668 states to 3668 states and 5092 transitions. [2025-03-04 09:31:01,965 INFO L78 Accepts]: Start accepts. Automaton has 3668 states and 5092 transitions. Word has length 8 [2025-03-04 09:31:01,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:31:01,965 INFO L471 AbstractCegarLoop]: Abstraction has 3668 states and 5092 transitions. [2025-03-04 09:31:01,965 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 09:31:01,966 INFO L276 IsEmpty]: Start isEmpty. Operand 3668 states and 5092 transitions. [2025-03-04 09:31:01,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-03-04 09:31:01,966 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:31:01,966 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:31:01,973 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 09:31:02,166 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 09:31:02,167 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1181REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-04 09:31:02,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:31:02,167 INFO L85 PathProgramCache]: Analyzing trace with hash -574402569, now seen corresponding path program 1 times [2025-03-04 09:31:02,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:31:02,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [230205618] [2025-03-04 09:31:02,167 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:31:02,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:31:02,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:31:02,169 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 09:31:02,170 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 09:31:02,299 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-04 09:31:02,309 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-04 09:31:02,309 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:31:02,309 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:31:02,310 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 09:31:02,312 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:31:02,321 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 09:31:02,339 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 09:31:02,339 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:31:02,339 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:31:02,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230205618] [2025-03-04 09:31:02,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230205618] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:31:02,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:31:02,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 09:31:02,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359400470] [2025-03-04 09:31:02,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:31:02,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:31:02,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:31:02,340 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:31:02,340 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:31:02,340 INFO L87 Difference]: Start difference. First operand 3668 states and 5092 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 09:31:05,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:31:05,684 INFO L93 Difference]: Finished difference Result 5453 states and 7532 transitions. [2025-03-04 09:31:05,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:31:05,684 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 09:31:05,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:31:05,696 INFO L225 Difference]: With dead ends: 5453 [2025-03-04 09:31:05,696 INFO L226 Difference]: Without dead ends: 5453 [2025-03-04 09:31:05,696 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 09:31:05,697 INFO L435 NwaCegarLoop]: 2748 mSDtfsCounter, 1411 mSDsluCounter, 1190 mSDsCounter, 0 mSdLazyCounter, 1684 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1415 SdHoareTripleChecker+Valid, 3938 SdHoareTripleChecker+Invalid, 1709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2025-03-04 09:31:05,697 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1415 Valid, 3938 Invalid, 1709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1684 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2025-03-04 09:31:05,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5453 states. [2025-03-04 09:31:05,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5453 to 4008. [2025-03-04 09:31:05,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4008 states, 2935 states have (on average 1.9345826235093697) internal successors, (5678), 3983 states have internal predecessors, (5678), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-04 09:31:05,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4008 states to 4008 states and 5728 transitions. [2025-03-04 09:31:05,759 INFO L78 Accepts]: Start accepts. Automaton has 4008 states and 5728 transitions. Word has length 8 [2025-03-04 09:31:05,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:31:05,761 INFO L471 AbstractCegarLoop]: Abstraction has 4008 states and 5728 transitions. [2025-03-04 09:31:05,761 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 09:31:05,761 INFO L276 IsEmpty]: Start isEmpty. Operand 4008 states and 5728 transitions. [2025-03-04 09:31:05,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-03-04 09:31:05,761 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:31:05,761 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:31:05,770 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 09:31:05,961 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 09:31:05,962 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr548REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-04 09:31:05,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:31:05,962 INFO L85 PathProgramCache]: Analyzing trace with hash 761747980, now seen corresponding path program 1 times [2025-03-04 09:31:05,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:31:05,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1655711531] [2025-03-04 09:31:05,962 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:31:05,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:31:05,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:31:05,964 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 09:31:05,965 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 09:31:06,083 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-04 09:31:06,094 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-04 09:31:06,094 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:31:06,094 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:31:06,096 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:31:06,097 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:31:06,121 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 09:31:06,121 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:31:06,121 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:31:06,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655711531] [2025-03-04 09:31:06,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655711531] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:31:06,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:31:06,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:31:06,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188827623] [2025-03-04 09:31:06,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:31:06,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:31:06,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:31:06,122 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:31:06,122 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:31:06,122 INFO L87 Difference]: Start difference. First operand 4008 states and 5728 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 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 09:31:09,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:31:09,140 INFO L93 Difference]: Finished difference Result 4643 states and 6221 transitions. [2025-03-04 09:31:09,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:31:09,141 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 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 10 [2025-03-04 09:31:09,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:31:09,150 INFO L225 Difference]: With dead ends: 4643 [2025-03-04 09:31:09,150 INFO L226 Difference]: Without dead ends: 4643 [2025-03-04 09:31:09,151 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 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 09:31:09,151 INFO L435 NwaCegarLoop]: 1609 mSDtfsCounter, 2268 mSDsluCounter, 1931 mSDsCounter, 0 mSdLazyCounter, 2719 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2278 SdHoareTripleChecker+Valid, 3540 SdHoareTripleChecker+Invalid, 2751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2025-03-04 09:31:09,151 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2278 Valid, 3540 Invalid, 2751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 2719 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2025-03-04 09:31:09,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4643 states. [2025-03-04 09:31:09,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4643 to 3985. [2025-03-04 09:31:09,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3985 states, 2935 states have (on average 1.918909710391823) internal successors, (5632), 3960 states have internal predecessors, (5632), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-04 09:31:09,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3985 states to 3985 states and 5682 transitions. [2025-03-04 09:31:09,198 INFO L78 Accepts]: Start accepts. Automaton has 3985 states and 5682 transitions. Word has length 10 [2025-03-04 09:31:09,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:31:09,199 INFO L471 AbstractCegarLoop]: Abstraction has 3985 states and 5682 transitions. [2025-03-04 09:31:09,199 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 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 09:31:09,199 INFO L276 IsEmpty]: Start isEmpty. Operand 3985 states and 5682 transitions. [2025-03-04 09:31:09,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-03-04 09:31:09,199 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:31:09,199 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:31:09,206 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-04 09:31:09,400 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 09:31:09,400 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr549REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-04 09:31:09,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:31:09,401 INFO L85 PathProgramCache]: Analyzing trace with hash 761747981, now seen corresponding path program 1 times [2025-03-04 09:31:09,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:31:09,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1640210449] [2025-03-04 09:31:09,401 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:31:09,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:31:09,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:31:09,403 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 09:31:09,404 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 09:31:09,534 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-04 09:31:09,543 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-04 09:31:09,543 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:31:09,543 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:31:09,545 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-04 09:31:09,546 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:31:09,553 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 09:31:09,606 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 09:31:09,606 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:31:09,606 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:31:09,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640210449] [2025-03-04 09:31:09,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640210449] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:31:09,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:31:09,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:31:09,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203312540] [2025-03-04 09:31:09,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:31:09,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:31:09,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:31:09,607 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:31:09,607 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:31:09,607 INFO L87 Difference]: Start difference. First operand 3985 states and 5682 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 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 09:31:13,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:31:13,392 INFO L93 Difference]: Finished difference Result 4726 states and 6495 transitions. [2025-03-04 09:31:13,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:31:13,392 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 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 10 [2025-03-04 09:31:13,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:31:13,401 INFO L225 Difference]: With dead ends: 4726 [2025-03-04 09:31:13,401 INFO L226 Difference]: Without dead ends: 4726 [2025-03-04 09:31:13,401 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 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 09:31:13,401 INFO L435 NwaCegarLoop]: 2116 mSDtfsCounter, 848 mSDsluCounter, 2543 mSDsCounter, 0 mSdLazyCounter, 2644 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 4659 SdHoareTripleChecker+Invalid, 2659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2025-03-04 09:31:13,402 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [851 Valid, 4659 Invalid, 2659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 2644 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2025-03-04 09:31:13,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4726 states. [2025-03-04 09:31:13,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4726 to 4032. [2025-03-04 09:31:13,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4032 states, 2982 states have (on average 1.90878604963112) internal successors, (5692), 4007 states have internal predecessors, (5692), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-04 09:31:13,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4032 states to 4032 states and 5742 transitions. [2025-03-04 09:31:13,438 INFO L78 Accepts]: Start accepts. Automaton has 4032 states and 5742 transitions. Word has length 10 [2025-03-04 09:31:13,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:31:13,439 INFO L471 AbstractCegarLoop]: Abstraction has 4032 states and 5742 transitions. [2025-03-04 09:31:13,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 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 09:31:13,439 INFO L276 IsEmpty]: Start isEmpty. Operand 4032 states and 5742 transitions. [2025-03-04 09:31:13,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-03-04 09:31:13,439 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:31:13,439 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:31:13,446 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-03-04 09:31:13,639 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 09:31:13,640 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr525REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-04 09:31:13,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:31:13,640 INFO L85 PathProgramCache]: Analyzing trace with hash 2139307635, now seen corresponding path program 1 times [2025-03-04 09:31:13,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:31:13,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [971343091] [2025-03-04 09:31:13,640 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:31:13,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:31:13,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:31:13,642 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 09:31:13,643 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 09:31:13,764 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-04 09:31:13,774 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-04 09:31:13,774 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:31:13,774 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:31:13,775 INFO L256 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:31:13,776 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:31:13,786 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 09:31:13,786 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:31:13,786 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:31:13,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971343091] [2025-03-04 09:31:13,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971343091] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:31:13,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:31:13,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:31:13,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118008663] [2025-03-04 09:31:13,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:31:13,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:31:13,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:31:13,786 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:31:13,787 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:31:13,787 INFO L87 Difference]: Start difference. First operand 4032 states and 5742 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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 09:31:13,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:31:13,866 INFO L93 Difference]: Finished difference Result 3954 states and 5621 transitions. [2025-03-04 09:31:13,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 09:31:13,866 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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 09:31:13,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:31:13,876 INFO L225 Difference]: With dead ends: 3954 [2025-03-04 09:31:13,876 INFO L226 Difference]: Without dead ends: 3954 [2025-03-04 09:31:13,877 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 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 09:31:13,877 INFO L435 NwaCegarLoop]: 2355 mSDtfsCounter, 45 mSDsluCounter, 4687 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 7042 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 09:31:13,877 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 7042 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 09:31:13,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3954 states. [2025-03-04 09:31:13,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3954 to 3948. [2025-03-04 09:31:13,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3948 states, 2917 states have (on average 1.9077819677751113) internal successors, (5565), 3923 states have internal predecessors, (5565), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-04 09:31:13,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3948 states to 3948 states and 5615 transitions. [2025-03-04 09:31:13,921 INFO L78 Accepts]: Start accepts. Automaton has 3948 states and 5615 transitions. Word has length 11 [2025-03-04 09:31:13,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:31:13,921 INFO L471 AbstractCegarLoop]: Abstraction has 3948 states and 5615 transitions. [2025-03-04 09:31:13,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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 09:31:13,922 INFO L276 IsEmpty]: Start isEmpty. Operand 3948 states and 5615 transitions. [2025-03-04 09:31:13,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-03-04 09:31:13,923 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:31:13,923 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:31:13,930 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 09:31:14,123 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 09:31:14,123 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1170REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-04 09:31:14,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:31:14,124 INFO L85 PathProgramCache]: Analyzing trace with hash -737712107, now seen corresponding path program 1 times [2025-03-04 09:31:14,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:31:14,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1939499529] [2025-03-04 09:31:14,124 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:31:14,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:31:14,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:31:14,126 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 09:31:14,127 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 09:31:14,260 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-04 09:31:14,278 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-04 09:31:14,278 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:31:14,278 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:31:14,281 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:31:14,283 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:31:14,314 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 09:31:14,314 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:31:14,314 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:31:14,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939499529] [2025-03-04 09:31:14,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1939499529] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:31:14,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:31:14,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:31:14,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542731231] [2025-03-04 09:31:14,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:31:14,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:31:14,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:31:14,315 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:31:14,315 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:31:14,315 INFO L87 Difference]: Start difference. First operand 3948 states and 5615 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 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 09:31:17,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:31:17,002 INFO L93 Difference]: Finished difference Result 4623 states and 6335 transitions. [2025-03-04 09:31:17,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:31:17,002 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 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 19 [2025-03-04 09:31:17,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:31:17,016 INFO L225 Difference]: With dead ends: 4623 [2025-03-04 09:31:17,016 INFO L226 Difference]: Without dead ends: 4623 [2025-03-04 09:31:17,016 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 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 09:31:17,017 INFO L435 NwaCegarLoop]: 2239 mSDtfsCounter, 1871 mSDsluCounter, 2379 mSDsCounter, 0 mSdLazyCounter, 2918 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1881 SdHoareTripleChecker+Valid, 4618 SdHoareTripleChecker+Invalid, 2950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2025-03-04 09:31:17,017 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1881 Valid, 4618 Invalid, 2950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 2918 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2025-03-04 09:31:17,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4623 states. [2025-03-04 09:31:17,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4623 to 3925. [2025-03-04 09:31:17,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3925 states, 2917 states have (on average 1.8920123414466918) internal successors, (5519), 3900 states have internal predecessors, (5519), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-04 09:31:17,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3925 states to 3925 states and 5569 transitions. [2025-03-04 09:31:17,068 INFO L78 Accepts]: Start accepts. Automaton has 3925 states and 5569 transitions. Word has length 19 [2025-03-04 09:31:17,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:31:17,069 INFO L471 AbstractCegarLoop]: Abstraction has 3925 states and 5569 transitions. [2025-03-04 09:31:17,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 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 09:31:17,069 INFO L276 IsEmpty]: Start isEmpty. Operand 3925 states and 5569 transitions. [2025-03-04 09:31:17,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-03-04 09:31:17,070 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:31:17,070 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:31:17,084 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 09:31:17,270 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 09:31:17,271 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1171REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-04 09:31:17,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:31:17,272 INFO L85 PathProgramCache]: Analyzing trace with hash -737712106, now seen corresponding path program 1 times [2025-03-04 09:31:17,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:31:17,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [480506488] [2025-03-04 09:31:17,272 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:31:17,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:31:17,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:31:17,277 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 09:31:17,282 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 09:31:17,413 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-04 09:31:17,434 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-04 09:31:17,434 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:31:17,434 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:31:17,438 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-04 09:31:17,439 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:31:17,448 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 09:31:17,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:31:17,507 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:31:17,508 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:31:17,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480506488] [2025-03-04 09:31:17,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480506488] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:31:17,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:31:17,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:31:17,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292813086] [2025-03-04 09:31:17,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:31:17,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:31:17,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:31:17,508 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:31:17,508 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:31:17,508 INFO L87 Difference]: Start difference. First operand 3925 states and 5569 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 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 09:31:21,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:31:21,412 INFO L93 Difference]: Finished difference Result 5406 states and 7375 transitions. [2025-03-04 09:31:21,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:31:21,413 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 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 19 [2025-03-04 09:31:21,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:31:21,421 INFO L225 Difference]: With dead ends: 5406 [2025-03-04 09:31:21,421 INFO L226 Difference]: Without dead ends: 5406 [2025-03-04 09:31:21,421 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 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 09:31:21,422 INFO L435 NwaCegarLoop]: 2587 mSDtfsCounter, 1447 mSDsluCounter, 2868 mSDsCounter, 0 mSdLazyCounter, 3036 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1451 SdHoareTripleChecker+Valid, 5455 SdHoareTripleChecker+Invalid, 3058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 3036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2025-03-04 09:31:21,422 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1451 Valid, 5455 Invalid, 3058 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 3036 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2025-03-04 09:31:21,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5406 states. [2025-03-04 09:31:21,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5406 to 4039. [2025-03-04 09:31:21,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4039 states, 3031 states have (on average 1.8663807324315407) internal successors, (5657), 4014 states have internal predecessors, (5657), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-04 09:31:21,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4039 states to 4039 states and 5707 transitions. [2025-03-04 09:31:21,462 INFO L78 Accepts]: Start accepts. Automaton has 4039 states and 5707 transitions. Word has length 19 [2025-03-04 09:31:21,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:31:21,462 INFO L471 AbstractCegarLoop]: Abstraction has 4039 states and 5707 transitions. [2025-03-04 09:31:21,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 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 09:31:21,462 INFO L276 IsEmpty]: Start isEmpty. Operand 4039 states and 5707 transitions. [2025-03-04 09:31:21,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-03-04 09:31:21,462 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:31:21,462 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:31:21,471 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-03-04 09:31:21,663 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 09:31:21,663 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr862REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-04 09:31:21,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:31:21,663 INFO L85 PathProgramCache]: Analyzing trace with hash -756582698, now seen corresponding path program 1 times [2025-03-04 09:31:21,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:31:21,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1486734202] [2025-03-04 09:31:21,664 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:31:21,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:31:21,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:31:21,666 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 09:31:21,667 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 09:31:21,806 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-04 09:31:21,825 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-04 09:31:21,826 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:31:21,826 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:31:21,829 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 09:31:21,834 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:31:21,838 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 09:31:21,860 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 09:31:21,861 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:31:21,861 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:31:21,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486734202] [2025-03-04 09:31:21,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486734202] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:31:21,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:31:21,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:31:21,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594392188] [2025-03-04 09:31:21,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:31:21,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:31:21,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:31:21,862 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:31:21,862 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:31:21,862 INFO L87 Difference]: Start difference. First operand 4039 states and 5707 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 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 09:31:24,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:31:24,601 INFO L93 Difference]: Finished difference Result 4730 states and 6351 transitions. [2025-03-04 09:31:24,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:31:24,601 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 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 19 [2025-03-04 09:31:24,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:31:24,608 INFO L225 Difference]: With dead ends: 4730 [2025-03-04 09:31:24,608 INFO L226 Difference]: Without dead ends: 4730 [2025-03-04 09:31:24,608 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 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 09:31:24,609 INFO L435 NwaCegarLoop]: 2239 mSDtfsCounter, 1846 mSDsluCounter, 2379 mSDsCounter, 0 mSdLazyCounter, 2872 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1856 SdHoareTripleChecker+Valid, 4618 SdHoareTripleChecker+Invalid, 2903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 2872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2025-03-04 09:31:24,609 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1856 Valid, 4618 Invalid, 2903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 2872 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2025-03-04 09:31:24,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4730 states. [2025-03-04 09:31:24,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4730 to 4016. [2025-03-04 09:31:24,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4016 states, 3031 states have (on average 1.8208512042230287) internal successors, (5519), 3991 states have internal predecessors, (5519), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-04 09:31:24,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4016 states to 4016 states and 5569 transitions. [2025-03-04 09:31:24,667 INFO L78 Accepts]: Start accepts. Automaton has 4016 states and 5569 transitions. Word has length 19 [2025-03-04 09:31:24,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:31:24,668 INFO L471 AbstractCegarLoop]: Abstraction has 4016 states and 5569 transitions. [2025-03-04 09:31:24,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 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 09:31:24,668 INFO L276 IsEmpty]: Start isEmpty. Operand 4016 states and 5569 transitions. [2025-03-04 09:31:24,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-03-04 09:31:24,669 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:31:24,669 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:31:24,678 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-03-04 09:31:24,870 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 09:31:24,870 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr863REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-04 09:31:24,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:31:24,871 INFO L85 PathProgramCache]: Analyzing trace with hash -756582697, now seen corresponding path program 1 times [2025-03-04 09:31:24,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:31:24,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1049923640] [2025-03-04 09:31:24,871 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:31:24,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:31:24,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:31:24,873 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 09:31:24,875 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 09:31:25,016 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-04 09:31:25,035 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-04 09:31:25,035 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:31:25,035 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:31:25,038 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-04 09:31:25,040 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:31:25,045 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 09:31:25,097 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 09:31:25,097 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:31:25,097 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:31:25,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049923640] [2025-03-04 09:31:25,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1049923640] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:31:25,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:31:25,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:31:25,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465341954] [2025-03-04 09:31:25,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:31:25,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:31:25,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:31:25,097 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:31:25,097 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:31:25,097 INFO L87 Difference]: Start difference. First operand 4016 states and 5569 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 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 09:31:29,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:31:29,074 INFO L93 Difference]: Finished difference Result 5474 states and 7375 transitions. [2025-03-04 09:31:29,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:31:29,075 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 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 19 [2025-03-04 09:31:29,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:31:29,081 INFO L225 Difference]: With dead ends: 5474 [2025-03-04 09:31:29,081 INFO L226 Difference]: Without dead ends: 5474 [2025-03-04 09:31:29,081 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 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 09:31:29,081 INFO L435 NwaCegarLoop]: 2571 mSDtfsCounter, 1424 mSDsluCounter, 2822 mSDsCounter, 0 mSdLazyCounter, 3044 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1428 SdHoareTripleChecker+Valid, 5393 SdHoareTripleChecker+Invalid, 3066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 3044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2025-03-04 09:31:29,081 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1428 Valid, 5393 Invalid, 3066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 3044 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2025-03-04 09:31:29,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5474 states. [2025-03-04 09:31:29,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5474 to 4130. [2025-03-04 09:31:29,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4130 states, 3145 states have (on average 1.7987281399046104) internal successors, (5657), 4105 states have internal predecessors, (5657), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-04 09:31:29,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4130 states to 4130 states and 5707 transitions. [2025-03-04 09:31:29,113 INFO L78 Accepts]: Start accepts. Automaton has 4130 states and 5707 transitions. Word has length 19 [2025-03-04 09:31:29,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:31:29,113 INFO L471 AbstractCegarLoop]: Abstraction has 4130 states and 5707 transitions. [2025-03-04 09:31:29,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 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 09:31:29,113 INFO L276 IsEmpty]: Start isEmpty. Operand 4130 states and 5707 transitions. [2025-03-04 09:31:29,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-03-04 09:31:29,114 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:31:29,115 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:31:29,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-03-04 09:31:29,315 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 09:31:29,315 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1171REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-04 09:31:29,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:31:29,316 INFO L85 PathProgramCache]: Analyzing trace with hash 2143448273, now seen corresponding path program 1 times [2025-03-04 09:31:29,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:31:29,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1471826443] [2025-03-04 09:31:29,316 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:31:29,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:31:29,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:31:29,318 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 09:31:29,320 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 09:31:29,461 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-03-04 09:31:29,508 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-03-04 09:31:29,508 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:31:29,508 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:31:29,515 INFO L256 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-04 09:31:29,518 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:31:29,531 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 09:31:29,706 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 09:31:29,706 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:31:29,999 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 09:31:29,999 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:31:29,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471826443] [2025-03-04 09:31:29,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471826443] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 09:31:29,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 09:31:29,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2025-03-04 09:31:30,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375298222] [2025-03-04 09:31:30,000 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 09:31:30,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-04 09:31:30,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:31:30,000 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-04 09:31:30,000 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-04 09:31:30,000 INFO L87 Difference]: Start difference. First operand 4130 states and 5707 transitions. Second operand has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 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 09:31:41,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:31:41,339 INFO L93 Difference]: Finished difference Result 5882 states and 7945 transitions. [2025-03-04 09:31:41,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-04 09:31:41,339 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 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 38 [2025-03-04 09:31:41,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:31:41,344 INFO L225 Difference]: With dead ends: 5882 [2025-03-04 09:31:41,344 INFO L226 Difference]: Without dead ends: 5882 [2025-03-04 09:31:41,344 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 68 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 09:31:41,345 INFO L435 NwaCegarLoop]: 2565 mSDtfsCounter, 2214 mSDsluCounter, 5719 mSDsCounter, 0 mSdLazyCounter, 5621 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2220 SdHoareTripleChecker+Valid, 8284 SdHoareTripleChecker+Invalid, 5649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 5621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2025-03-04 09:31:41,345 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2220 Valid, 8284 Invalid, 5649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 5621 Invalid, 0 Unknown, 0 Unchecked, 11.1s Time] [2025-03-04 09:31:41,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5882 states. [2025-03-04 09:31:41,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5882 to 4294. [2025-03-04 09:31:41,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4294 states, 3309 states have (on average 1.7796917497733453) internal successors, (5889), 4269 states have internal predecessors, (5889), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-04 09:31:41,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4294 states to 4294 states and 5939 transitions. [2025-03-04 09:31:41,391 INFO L78 Accepts]: Start accepts. Automaton has 4294 states and 5939 transitions. Word has length 38 [2025-03-04 09:31:41,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:31:41,392 INFO L471 AbstractCegarLoop]: Abstraction has 4294 states and 5939 transitions. [2025-03-04 09:31:41,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 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 09:31:41,392 INFO L276 IsEmpty]: Start isEmpty. Operand 4294 states and 5939 transitions. [2025-03-04 09:31:41,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-03-04 09:31:41,394 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:31:41,394 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:31:41,405 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-03-04 09:31:41,595 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 09:31:41,595 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr863REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-04 09:31:41,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:31:41,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1068678835, now seen corresponding path program 1 times [2025-03-04 09:31:41,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:31:41,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2079434962] [2025-03-04 09:31:41,596 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:31:41,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:31:41,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:31:41,598 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 09:31:41,599 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 09:31:41,759 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-03-04 09:31:41,816 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-03-04 09:31:41,816 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:31:41,816 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:31:41,826 INFO L256 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-04 09:31:41,828 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:31:41,834 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 09:31:41,963 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 09:31:41,963 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:31:42,237 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 09:31:42,238 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:31:42,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079434962] [2025-03-04 09:31:42,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2079434962] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 09:31:42,238 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 09:31:42,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2025-03-04 09:31:42,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007817923] [2025-03-04 09:31:42,239 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 09:31:42,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-04 09:31:42,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:31:42,240 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-04 09:31:42,240 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-04 09:31:42,240 INFO L87 Difference]: Start difference. First operand 4294 states and 5939 transitions. Second operand has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 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 09:31:52,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:31:52,475 INFO L93 Difference]: Finished difference Result 6046 states and 8177 transitions. [2025-03-04 09:31:52,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-04 09:31:52,476 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 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 38 [2025-03-04 09:31:52,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:31:52,488 INFO L225 Difference]: With dead ends: 6046 [2025-03-04 09:31:52,489 INFO L226 Difference]: Without dead ends: 6046 [2025-03-04 09:31:52,489 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2025-03-04 09:31:52,489 INFO L435 NwaCegarLoop]: 2572 mSDtfsCounter, 2174 mSDsluCounter, 5717 mSDsCounter, 0 mSdLazyCounter, 5639 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2180 SdHoareTripleChecker+Valid, 8289 SdHoareTripleChecker+Invalid, 5668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 5639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2025-03-04 09:31:52,490 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2180 Valid, 8289 Invalid, 5668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 5639 Invalid, 0 Unknown, 0 Unchecked, 10.0s Time] [2025-03-04 09:31:52,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6046 states. [2025-03-04 09:31:52,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6046 to 4458. [2025-03-04 09:31:52,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4458 states, 3473 states have (on average 1.7624532104808524) internal successors, (6121), 4433 states have internal predecessors, (6121), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-04 09:31:52,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4458 states to 4458 states and 6171 transitions. [2025-03-04 09:31:52,571 INFO L78 Accepts]: Start accepts. Automaton has 4458 states and 6171 transitions. Word has length 38 [2025-03-04 09:31:52,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:31:52,576 INFO L471 AbstractCegarLoop]: Abstraction has 4458 states and 6171 transitions. [2025-03-04 09:31:52,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 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 09:31:52,576 INFO L276 IsEmpty]: Start isEmpty. Operand 4458 states and 6171 transitions. [2025-03-04 09:31:52,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-03-04 09:31:52,576 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:31:52,577 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] [2025-03-04 09:31:52,593 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 09:31:52,778 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 09:31:52,779 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr502REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-04 09:31:52,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:31:52,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1642370794, now seen corresponding path program 1 times [2025-03-04 09:31:52,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:31:52,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [288353779] [2025-03-04 09:31:52,781 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:31:52,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:31:52,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:31:52,782 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 09:31:52,784 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 09:31:52,933 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-03-04 09:31:52,964 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-03-04 09:31:52,965 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:31:52,965 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:31:52,969 INFO L256 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:31:52,971 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:31:53,087 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 09:31:53,087 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:31:53,087 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:31:53,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288353779] [2025-03-04 09:31:53,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288353779] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:31:53,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:31:53,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:31:53,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207422539] [2025-03-04 09:31:53,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:31:53,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:31:53,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:31:53,088 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:31:53,088 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:31:53,088 INFO L87 Difference]: Start difference. First operand 4458 states and 6171 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 09:31:53,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:31:53,275 INFO L93 Difference]: Finished difference Result 6650 states and 8890 transitions. [2025-03-04 09:31:53,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:31:53,275 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 39 [2025-03-04 09:31:53,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:31:53,282 INFO L225 Difference]: With dead ends: 6650 [2025-03-04 09:31:53,282 INFO L226 Difference]: Without dead ends: 6650 [2025-03-04 09:31:53,282 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 37 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 09:31:53,282 INFO L435 NwaCegarLoop]: 2399 mSDtfsCounter, 1612 mSDsluCounter, 2228 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1619 SdHoareTripleChecker+Valid, 4627 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-04 09:31:53,282 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1619 Valid, 4627 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-04 09:31:53,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6650 states. [2025-03-04 09:31:53,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6650 to 5829. [2025-03-04 09:31:53,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5829 states, 4837 states have (on average 1.7436427537729997) internal successors, (8434), 5794 states have internal predecessors, (8434), 35 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (35), 32 states have call predecessors, (35), 35 states have call successors, (35) [2025-03-04 09:31:53,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5829 states to 5829 states and 8504 transitions. [2025-03-04 09:31:53,365 INFO L78 Accepts]: Start accepts. Automaton has 5829 states and 8504 transitions. Word has length 39 [2025-03-04 09:31:53,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:31:53,366 INFO L471 AbstractCegarLoop]: Abstraction has 5829 states and 8504 transitions. [2025-03-04 09:31:53,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 09:31:53,366 INFO L276 IsEmpty]: Start isEmpty. Operand 5829 states and 8504 transitions. [2025-03-04 09:31:53,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2025-03-04 09:31:53,368 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:31:53,368 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:31:53,377 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 09:31:53,569 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 09:31:53,569 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-04 09:31:53,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:31:53,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1867561523, now seen corresponding path program 1 times [2025-03-04 09:31:53,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:31:53,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2015793853] [2025-03-04 09:31:53,570 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:31:53,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:31:53,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:31:53,573 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 09:31:53,574 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 09:31:53,720 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 50 statements into 1 equivalence classes. [2025-03-04 09:31:53,751 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 50 of 50 statements. [2025-03-04 09:31:53,751 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:31:53,751 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:31:53,755 INFO L256 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:31:53,757 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:31:53,791 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 09:31:53,791 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:31:53,791 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:31:53,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015793853] [2025-03-04 09:31:53,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015793853] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:31:53,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:31:53,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:31:53,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472865022] [2025-03-04 09:31:53,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:31:53,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:31:53,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:31:53,793 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:31:53,793 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:31:53,793 INFO L87 Difference]: Start difference. First operand 5829 states and 8504 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:31:53,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:31:53,845 INFO L93 Difference]: Finished difference Result 5811 states and 8470 transitions. [2025-03-04 09:31:53,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 09:31:53,846 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2025-03-04 09:31:53,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:31:53,851 INFO L225 Difference]: With dead ends: 5811 [2025-03-04 09:31:53,851 INFO L226 Difference]: Without dead ends: 5811 [2025-03-04 09:31:53,852 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:31:53,853 INFO L435 NwaCegarLoop]: 2311 mSDtfsCounter, 27 mSDsluCounter, 4585 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 6896 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 09:31:53,853 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 6896 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 09:31:53,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5811 states. [2025-03-04 09:31:53,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5811 to 5811. [2025-03-04 09:31:53,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5811 states, 4819 states have (on average 1.7431002282631252) internal successors, (8400), 5776 states have internal predecessors, (8400), 35 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (35), 32 states have call predecessors, (35), 35 states have call successors, (35) [2025-03-04 09:31:53,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5811 states to 5811 states and 8470 transitions. [2025-03-04 09:31:53,926 INFO L78 Accepts]: Start accepts. Automaton has 5811 states and 8470 transitions. Word has length 50 [2025-03-04 09:31:53,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:31:53,926 INFO L471 AbstractCegarLoop]: Abstraction has 5811 states and 8470 transitions. [2025-03-04 09:31:53,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:31:53,926 INFO L276 IsEmpty]: Start isEmpty. Operand 5811 states and 8470 transitions. [2025-03-04 09:31:53,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2025-03-04 09:31:53,927 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:31:53,927 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:31:53,934 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-03-04 09:31:54,127 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 09:31:54,127 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr810REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-04 09:31:54,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:31:54,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1212270441, now seen corresponding path program 1 times [2025-03-04 09:31:54,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:31:54,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [379925320] [2025-03-04 09:31:54,128 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:31:54,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:31:54,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:31:54,130 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 09:31:54,131 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 09:31:54,280 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 50 statements into 1 equivalence classes. [2025-03-04 09:31:54,324 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 50 of 50 statements. [2025-03-04 09:31:54,324 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:31:54,324 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:31:54,332 INFO L256 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:31:54,333 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:31:54,472 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 09:31:54,473 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:31:54,473 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:31:54,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379925320] [2025-03-04 09:31:54,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379925320] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:31:54,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:31:54,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:31:54,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585068678] [2025-03-04 09:31:54,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:31:54,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:31:54,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:31:54,475 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:31:54,475 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:31:54,475 INFO L87 Difference]: Start difference. First operand 5811 states and 8470 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 09:31:54,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:31:54,576 INFO L93 Difference]: Finished difference Result 8193 states and 11522 transitions. [2025-03-04 09:31:54,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:31:54,578 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 50 [2025-03-04 09:31:54,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:31:54,586 INFO L225 Difference]: With dead ends: 8193 [2025-03-04 09:31:54,586 INFO L226 Difference]: Without dead ends: 8193 [2025-03-04 09:31:54,586 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 48 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 09:31:54,587 INFO L435 NwaCegarLoop]: 2407 mSDtfsCounter, 1503 mSDsluCounter, 2263 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1510 SdHoareTripleChecker+Valid, 4670 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 09:31:54,587 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1510 Valid, 4670 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 09:31:54,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8193 states. [2025-03-04 09:31:54,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8193 to 7379. [2025-03-04 09:31:54,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7379 states, 6378 states have (on average 1.7253057384760113) internal successors, (11004), 7332 states have internal predecessors, (11004), 47 states have call successors, (47), 3 states have call predecessors, (47), 3 states have return successors, (47), 44 states have call predecessors, (47), 47 states have call successors, (47) [2025-03-04 09:31:54,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7379 states to 7379 states and 11098 transitions. [2025-03-04 09:31:54,667 INFO L78 Accepts]: Start accepts. Automaton has 7379 states and 11098 transitions. Word has length 50 [2025-03-04 09:31:54,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:31:54,668 INFO L471 AbstractCegarLoop]: Abstraction has 7379 states and 11098 transitions. [2025-03-04 09:31:54,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 09:31:54,668 INFO L276 IsEmpty]: Start isEmpty. Operand 7379 states and 11098 transitions. [2025-03-04 09:31:54,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2025-03-04 09:31:54,668 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:31:54,668 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:31:54,678 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-03-04 09:31:54,869 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 09:31:54,869 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1089REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-04 09:31:54,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:31:54,870 INFO L85 PathProgramCache]: Analyzing trace with hash -871556419, now seen corresponding path program 1 times [2025-03-04 09:31:54,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:31:54,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2028336262] [2025-03-04 09:31:54,870 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:31:54,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:31:54,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:31:54,872 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 09:31:54,873 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 09:31:55,046 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 53 statements into 1 equivalence classes. [2025-03-04 09:31:55,093 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 53 of 53 statements. [2025-03-04 09:31:55,094 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:31:55,094 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:31:55,101 INFO L256 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:31:55,103 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:31:55,125 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 09:31:55,125 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:31:55,125 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:31:55,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028336262] [2025-03-04 09:31:55,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028336262] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:31:55,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:31:55,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:31:55,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138766487] [2025-03-04 09:31:55,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:31:55,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:31:55,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:31:55,126 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:31:55,126 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:31:55,126 INFO L87 Difference]: Start difference. First operand 7379 states and 11098 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 09:31:55,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:31:55,201 INFO L93 Difference]: Finished difference Result 6780 states and 10226 transitions. [2025-03-04 09:31:55,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 09:31:55,202 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 53 [2025-03-04 09:31:55,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:31:55,209 INFO L225 Difference]: With dead ends: 6780 [2025-03-04 09:31:55,209 INFO L226 Difference]: Without dead ends: 6780 [2025-03-04 09:31:55,209 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:31:55,210 INFO L435 NwaCegarLoop]: 2265 mSDtfsCounter, 56 mSDsluCounter, 4457 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 6722 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 09:31:55,210 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 6722 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 09:31:55,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6780 states. [2025-03-04 09:31:55,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6780 to 6776. [2025-03-04 09:31:55,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6776 states, 5798 states have (on average 1.7468092445670922) internal successors, (10128), 6729 states have internal predecessors, (10128), 47 states have call successors, (47), 3 states have call predecessors, (47), 3 states have return successors, (47), 44 states have call predecessors, (47), 47 states have call successors, (47) [2025-03-04 09:31:55,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6776 states to 6776 states and 10222 transitions. [2025-03-04 09:31:55,276 INFO L78 Accepts]: Start accepts. Automaton has 6776 states and 10222 transitions. Word has length 53 [2025-03-04 09:31:55,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:31:55,276 INFO L471 AbstractCegarLoop]: Abstraction has 6776 states and 10222 transitions. [2025-03-04 09:31:55,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 09:31:55,276 INFO L276 IsEmpty]: Start isEmpty. Operand 6776 states and 10222 transitions. [2025-03-04 09:31:55,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2025-03-04 09:31:55,276 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:31:55,276 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:31:55,285 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 09:31:55,476 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 09:31:55,477 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr781REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-04 09:31:55,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:31:55,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1631739170, now seen corresponding path program 1 times [2025-03-04 09:31:55,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:31:55,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1333600151] [2025-03-04 09:31:55,477 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:31:55,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:31:55,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:31:55,479 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 09:31:55,480 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 09:31:55,630 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 53 statements into 1 equivalence classes. [2025-03-04 09:31:55,688 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 53 of 53 statements. [2025-03-04 09:31:55,688 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:31:55,688 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:31:55,695 INFO L256 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:31:55,697 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:31:55,716 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 09:31:55,716 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:31:55,716 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:31:55,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333600151] [2025-03-04 09:31:55,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1333600151] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:31:55,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:31:55,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:31:55,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278044976] [2025-03-04 09:31:55,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:31:55,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:31:55,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:31:55,717 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:31:55,717 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:31:55,717 INFO L87 Difference]: Start difference. First operand 6776 states and 10222 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 09:31:55,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:31:55,776 INFO L93 Difference]: Finished difference Result 6158 states and 9218 transitions. [2025-03-04 09:31:55,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 09:31:55,776 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 53 [2025-03-04 09:31:55,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:31:55,781 INFO L225 Difference]: With dead ends: 6158 [2025-03-04 09:31:55,781 INFO L226 Difference]: Without dead ends: 6158 [2025-03-04 09:31:55,782 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:31:55,782 INFO L435 NwaCegarLoop]: 2230 mSDtfsCounter, 76 mSDsluCounter, 4367 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 6597 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 09:31:55,782 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 6597 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 09:31:55,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6158 states. [2025-03-04 09:31:55,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6158 to 6148. [2025-03-04 09:31:55,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6148 states, 5182 states have (on average 1.7587803936703976) internal successors, (9114), 6101 states have internal predecessors, (9114), 47 states have call successors, (47), 3 states have call predecessors, (47), 3 states have return successors, (47), 44 states have call predecessors, (47), 47 states have call successors, (47) [2025-03-04 09:31:55,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6148 states to 6148 states and 9208 transitions. [2025-03-04 09:31:55,821 INFO L78 Accepts]: Start accepts. Automaton has 6148 states and 9208 transitions. Word has length 53 [2025-03-04 09:31:55,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:31:55,822 INFO L471 AbstractCegarLoop]: Abstraction has 6148 states and 9208 transitions. [2025-03-04 09:31:55,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 09:31:55,822 INFO L276 IsEmpty]: Start isEmpty. Operand 6148 states and 9208 transitions. [2025-03-04 09:31:55,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2025-03-04 09:31:55,822 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:31:55,822 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:31:55,835 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 09:31:56,022 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 09:31:56,023 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-04 09:31:56,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:31:56,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1608287493, now seen corresponding path program 1 times [2025-03-04 09:31:56,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:31:56,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [949259086] [2025-03-04 09:31:56,023 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:31:56,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:31:56,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:31:56,025 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 09:31:56,026 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 09:31:56,222 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-03-04 09:31:56,255 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-03-04 09:31:56,255 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:31:56,255 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:31:56,260 INFO L256 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 09:31:56,262 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:31:56,266 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-04 09:31:56,267 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-04 09:31:56,267 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-04 09:31:56,271 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 09:31:56,298 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-04 09:31:56,299 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 09:31:56,307 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 09:31:56,307 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:31:56,307 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:31:56,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949259086] [2025-03-04 09:31:56,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949259086] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:31:56,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:31:56,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:31:56,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346894847] [2025-03-04 09:31:56,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:31:56,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:31:56,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:31:56,308 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:31:56,308 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:31:56,308 INFO L87 Difference]: Start difference. First operand 6148 states and 9208 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:31:56,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:31:56,671 INFO L93 Difference]: Finished difference Result 6996 states and 10212 transitions. [2025-03-04 09:31:56,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:31:56,671 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2025-03-04 09:31:56,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:31:56,678 INFO L225 Difference]: With dead ends: 6996 [2025-03-04 09:31:56,678 INFO L226 Difference]: Without dead ends: 6996 [2025-03-04 09:31:56,679 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 55 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 09:31:56,679 INFO L435 NwaCegarLoop]: 2449 mSDtfsCounter, 911 mSDsluCounter, 4567 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 917 SdHoareTripleChecker+Valid, 7016 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-04 09:31:56,679 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [917 Valid, 7016 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-04 09:31:56,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6996 states. [2025-03-04 09:31:56,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6996 to 6029. [2025-03-04 09:31:56,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6029 states, 5064 states have (on average 1.7648104265402844) internal successors, (8937), 5983 states have internal predecessors, (8937), 46 states have call successors, (46), 3 states have call predecessors, (46), 3 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2025-03-04 09:31:56,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6029 states to 6029 states and 9029 transitions. [2025-03-04 09:31:56,738 INFO L78 Accepts]: Start accepts. Automaton has 6029 states and 9029 transitions. Word has length 58 [2025-03-04 09:31:56,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:31:56,738 INFO L471 AbstractCegarLoop]: Abstraction has 6029 states and 9029 transitions. [2025-03-04 09:31:56,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:31:56,738 INFO L276 IsEmpty]: Start isEmpty. Operand 6029 states and 9029 transitions. [2025-03-04 09:31:56,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2025-03-04 09:31:56,738 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:31:56,739 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:31:56,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2025-03-04 09:31:56,939 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 09:31:56,939 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1089REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-04 09:31:56,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:31:56,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1118010507, now seen corresponding path program 1 times [2025-03-04 09:31:56,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:31:56,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [764282319] [2025-03-04 09:31:56,940 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:31:56,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:31:56,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:31:56,942 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 09:31:56,942 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 09:31:57,093 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 61 statements into 1 equivalence classes. [2025-03-04 09:31:57,155 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 61 of 61 statements. [2025-03-04 09:31:57,155 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:31:57,155 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:31:57,164 INFO L256 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-04 09:31:57,166 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:31:57,172 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-04 09:31:57,177 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 09:31:57,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-04 09:31:57,450 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 09:31:57,457 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-04 09:31:57,457 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 09:31:57,463 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 09:31:57,463 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:31:57,463 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:31:57,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764282319] [2025-03-04 09:31:57,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764282319] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:31:57,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:31:57,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:31:57,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135055633] [2025-03-04 09:31:57,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:31:57,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:31:57,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:31:57,464 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:31:57,464 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:31:57,464 INFO L87 Difference]: Start difference. First operand 6029 states and 9029 transitions. Second operand has 4 states, 3 states have (on average 20.333333333333332) internal successors, (61), 4 states have internal predecessors, (61), 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 09:31:59,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:31:59,877 INFO L93 Difference]: Finished difference Result 5945 states and 8748 transitions. [2025-03-04 09:31:59,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:31:59,877 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 20.333333333333332) internal successors, (61), 4 states have internal predecessors, (61), 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 61 [2025-03-04 09:31:59,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:31:59,883 INFO L225 Difference]: With dead ends: 5945 [2025-03-04 09:31:59,883 INFO L226 Difference]: Without dead ends: 5945 [2025-03-04 09:31:59,883 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 58 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 09:31:59,883 INFO L435 NwaCegarLoop]: 1064 mSDtfsCounter, 1643 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 1634 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1653 SdHoareTripleChecker+Valid, 1423 SdHoareTripleChecker+Invalid, 1725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2025-03-04 09:31:59,883 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1653 Valid, 1423 Invalid, 1725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1634 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2025-03-04 09:31:59,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5945 states. [2025-03-04 09:31:59,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5945 to 5768. [2025-03-04 09:31:59,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5768 states, 4887 states have (on average 1.7037037037037037) internal successors, (8326), 5722 states have internal predecessors, (8326), 46 states have call successors, (46), 3 states have call predecessors, (46), 3 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2025-03-04 09:31:59,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5768 states to 5768 states and 8418 transitions. [2025-03-04 09:31:59,942 INFO L78 Accepts]: Start accepts. Automaton has 5768 states and 8418 transitions. Word has length 61 [2025-03-04 09:31:59,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:31:59,942 INFO L471 AbstractCegarLoop]: Abstraction has 5768 states and 8418 transitions. [2025-03-04 09:31:59,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 20.333333333333332) internal successors, (61), 4 states have internal predecessors, (61), 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 09:31:59,942 INFO L276 IsEmpty]: Start isEmpty. Operand 5768 states and 8418 transitions. [2025-03-04 09:31:59,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-03-04 09:31:59,942 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:31:59,942 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] [2025-03-04 09:31:59,952 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 09:32:00,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:32:00,143 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1082REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-04 09:32:00,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:32:00,143 INFO L85 PathProgramCache]: Analyzing trace with hash 444711809, now seen corresponding path program 1 times [2025-03-04 09:32:00,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:32:00,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [30007117] [2025-03-04 09:32:00,144 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:32:00,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:32:00,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:32:00,146 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:32:00,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-03-04 09:32:00,307 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-03-04 09:32:00,357 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-03-04 09:32:00,357 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:32:00,357 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:32:00,364 INFO L256 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-04 09:32:00,366 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:32:00,372 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 09:32:00,386 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 09:32:00,401 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 09:32:00,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:32:00,408 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:32:00,408 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:32:00,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30007117] [2025-03-04 09:32:00,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30007117] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:32:00,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:32:00,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:32:00,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647806355] [2025-03-04 09:32:00,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:32:00,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 09:32:00,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:32:00,409 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 09:32:00,409 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:32:00,409 INFO L87 Difference]: Start difference. First operand 5768 states and 8418 transitions. Second operand has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 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 09:32:03,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:32:03,034 INFO L93 Difference]: Finished difference Result 5767 states and 8415 transitions. [2025-03-04 09:32:03,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 09:32:03,036 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 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 66 [2025-03-04 09:32:03,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:32:03,041 INFO L225 Difference]: With dead ends: 5767 [2025-03-04 09:32:03,041 INFO L226 Difference]: Without dead ends: 5767 [2025-03-04 09:32:03,041 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 62 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 09:32:03,045 INFO L435 NwaCegarLoop]: 2156 mSDtfsCounter, 2 mSDsluCounter, 3592 mSDsCounter, 0 mSdLazyCounter, 2883 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 5748 SdHoareTripleChecker+Invalid, 2884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2025-03-04 09:32:03,045 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 5748 Invalid, 2884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2883 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2025-03-04 09:32:03,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5767 states. [2025-03-04 09:32:03,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5767 to 5767. [2025-03-04 09:32:03,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5767 states, 4887 states have (on average 1.7030898301616533) internal successors, (8323), 5721 states have internal predecessors, (8323), 46 states have call successors, (46), 3 states have call predecessors, (46), 3 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2025-03-04 09:32:03,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5767 states to 5767 states and 8415 transitions. [2025-03-04 09:32:03,083 INFO L78 Accepts]: Start accepts. Automaton has 5767 states and 8415 transitions. Word has length 66 [2025-03-04 09:32:03,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:32:03,083 INFO L471 AbstractCegarLoop]: Abstraction has 5767 states and 8415 transitions. [2025-03-04 09:32:03,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 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 09:32:03,083 INFO L276 IsEmpty]: Start isEmpty. Operand 5767 states and 8415 transitions. [2025-03-04 09:32:03,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-03-04 09:32:03,084 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:32:03,084 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] [2025-03-04 09:32:03,093 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2025-03-04 09:32:03,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:32:03,284 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1083REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-04 09:32:03,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:32:03,285 INFO L85 PathProgramCache]: Analyzing trace with hash 444711810, now seen corresponding path program 1 times [2025-03-04 09:32:03,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:32:03,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [616395699] [2025-03-04 09:32:03,285 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:32:03,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:32:03,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:32:03,287 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 09:32:03,288 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 09:32:03,445 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-03-04 09:32:03,498 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-03-04 09:32:03,499 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:32:03,499 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:32:03,507 INFO L256 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-04 09:32:03,509 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:32:03,513 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 09:32:03,525 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 09:32:03,529 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 09:32:03,551 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 09:32:03,560 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 09:32:03,561 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:32:03,561 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:32:03,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616395699] [2025-03-04 09:32:03,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [616395699] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:32:03,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:32:03,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:32:03,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817445689] [2025-03-04 09:32:03,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:32:03,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 09:32:03,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:32:03,561 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 09:32:03,561 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:32:03,561 INFO L87 Difference]: Start difference. First operand 5767 states and 8415 transitions. Second operand has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 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)