./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ef232f94cb2adf03185aed5adfaef3f0eb9593ee06bfb5b3fbb6e4bc1dd6d041 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 09:24:53,100 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 09:24:53,147 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-04 09:24:53,150 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 09:24:53,151 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 09:24:53,170 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 09:24:53,171 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 09:24:53,172 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 09:24:53,172 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 09:24:53,172 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 09:24:53,173 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 09:24:53,173 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 09:24:53,173 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 09:24:53,173 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 09:24:53,173 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 09:24:53,174 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 09:24:53,174 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 09:24:53,174 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 09:24:53,174 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 09:24:53,174 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 09:24:53,174 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-04 09:24:53,174 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-04 09:24:53,174 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-04 09:24:53,174 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 09:24:53,175 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-04 09:24:53,175 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 09:24:53,175 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 09:24:53,175 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 09:24:53,175 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 09:24:53,175 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 09:24:53,175 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 09:24:53,175 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 09:24:53,176 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 09:24:53,176 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 09:24:53,176 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 09:24:53,176 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 09:24:53,176 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 09:24:53,176 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 09:24:53,176 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 09:24:53,176 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 09:24:53,176 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 09:24:53,176 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 09:24:53,176 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 -> ef232f94cb2adf03185aed5adfaef3f0eb9593ee06bfb5b3fbb6e4bc1dd6d041 [2025-03-04 09:24:53,384 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 09:24:53,390 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 09:24:53,392 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 09:24:53,393 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 09:24:53,393 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 09:24:53,394 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i [2025-03-04 09:24:54,497 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc73f1a59/f0c9fcf2ef0b4fafaf4464ee5439cd94/FLAG8e3ad51ec [2025-03-04 09:24:54,768 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 09:24:54,770 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i [2025-03-04 09:24:54,781 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc73f1a59/f0c9fcf2ef0b4fafaf4464ee5439cd94/FLAG8e3ad51ec [2025-03-04 09:24:55,063 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc73f1a59/f0c9fcf2ef0b4fafaf4464ee5439cd94 [2025-03-04 09:24:55,065 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 09:24:55,066 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 09:24:55,067 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 09:24:55,067 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 09:24:55,070 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 09:24:55,071 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:24:55" (1/1) ... [2025-03-04 09:24:55,071 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cbbac62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:24:55, skipping insertion in model container [2025-03-04 09:24:55,071 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:24:55" (1/1) ... [2025-03-04 09:24:55,095 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 09:24:55,310 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:24:55,344 WARN 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 09:24:55,349 WARN 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 09:24:55,353 WARN 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 09:24:55,358 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:24:55,382 WARN 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 09:24:55,382 WARN 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 09:24:55,384 WARN 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 09:24:55,384 WARN 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 09:24:55,385 WARN 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 09:24:55,386 WARN 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 09:24:55,387 WARN 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 09:24:55,387 WARN 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 09:24:55,390 WARN 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 09:24:55,391 WARN 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 09:24:55,392 WARN 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 09:24:55,393 WARN 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 09:24:55,393 WARN 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 09:24:55,393 WARN 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 09:24:55,395 WARN 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 09:24:55,400 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:24:55,413 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 09:24:55,414 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4c0dc4e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:24:55, skipping insertion in model container [2025-03-04 09:24:55,414 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 09:24:55,414 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-03-04 09:24:55,419 INFO L158 Benchmark]: Toolchain (without parser) took 348.72ms. Allocated memory is still 142.6MB. Free memory was 111.9MB in the beginning and 92.0MB in the end (delta: 19.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-04 09:24:55,419 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 201.3MB. Free memory is still 124.0MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 09:24:55,419 INFO L158 Benchmark]: CACSL2BoogieTranslator took 347.02ms. Allocated memory is still 142.6MB. Free memory was 111.4MB in the beginning and 92.0MB in the end (delta: 19.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-04 09:24:55,420 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 201.3MB. Free memory is still 124.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 347.02ms. Allocated memory is still 142.6MB. Free memory was 111.4MB in the beginning and 92.0MB in the end (delta: 19.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 727]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ef232f94cb2adf03185aed5adfaef3f0eb9593ee06bfb5b3fbb6e4bc1dd6d041 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 09:24:57,037 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 09:24:57,111 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-03-04 09:24:57,115 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 09:24:57,115 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 09:24:57,138 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 09:24:57,139 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 09:24:57,139 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 09:24:57,139 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 09:24:57,140 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 09:24:57,140 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 09:24:57,140 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 09:24:57,141 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 09:24:57,141 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 09:24:57,141 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 09:24:57,141 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 09:24:57,141 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 09:24:57,141 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 09:24:57,142 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 09:24:57,142 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 09:24:57,142 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-04 09:24:57,142 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-04 09:24:57,142 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-04 09:24:57,142 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 09:24:57,142 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-04 09:24:57,142 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-04 09:24:57,142 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-04 09:24:57,142 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 09:24:57,142 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 09:24:57,143 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 09:24:57,143 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 09:24:57,143 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 09:24:57,143 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 09:24:57,143 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 09:24:57,143 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 09:24:57,143 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 09:24:57,144 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 09:24:57,144 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 09:24:57,144 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-04 09:24:57,144 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-04 09:24:57,144 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 09:24:57,144 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 09:24:57,144 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 09:24:57,144 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 09:24:57,144 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 -> ef232f94cb2adf03185aed5adfaef3f0eb9593ee06bfb5b3fbb6e4bc1dd6d041 [2025-03-04 09:24:57,369 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 09:24:57,376 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 09:24:57,377 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 09:24:57,379 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 09:24:57,379 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 09:24:57,380 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i [2025-03-04 09:24:58,523 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f65543046/d5a578eafe87404f929104555ed02d0b/FLAG5f3d33108 [2025-03-04 09:24:58,736 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 09:24:58,736 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i [2025-03-04 09:24:58,754 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f65543046/d5a578eafe87404f929104555ed02d0b/FLAG5f3d33108 [2025-03-04 09:24:58,767 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f65543046/d5a578eafe87404f929104555ed02d0b [2025-03-04 09:24:58,769 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 09:24:58,771 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 09:24:58,772 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 09:24:58,773 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 09:24:58,776 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 09:24:58,777 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:24:58" (1/1) ... [2025-03-04 09:24:58,777 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6804fd5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:24:58, skipping insertion in model container [2025-03-04 09:24:58,779 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:24:58" (1/1) ... [2025-03-04 09:24:58,809 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 09:24:59,063 WARN 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 09:24:59,094 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 09:24:59,099 WARN 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 09:24:59,102 WARN 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 09:24:59,108 WARN 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 09:24:59,129 WARN 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 09:24:59,129 WARN 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 09:24:59,131 WARN 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 09:24:59,131 WARN 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 09:24:59,133 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 09:24:59,134 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 09:24:59,135 WARN 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 09:24:59,135 WARN 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 09:24:59,139 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 09:24:59,140 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 09:24:59,141 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 09:24:59,142 WARN 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 09:24:59,143 WARN 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 09:24:59,143 WARN 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 09:24:59,154 WARN 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 09:24:59,159 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:24:59,171 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-03-04 09:24:59,179 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 09:24:59,203 WARN 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 09:24:59,221 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 09:24:59,223 WARN 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 09:24:59,226 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:24:59,229 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:24:59,240 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 09:24:59,241 WARN 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 09:24:59,242 WARN 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 09:24:59,242 WARN 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 09:24:59,243 WARN 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 09:24:59,244 WARN 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 09:24:59,244 WARN 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 09:24:59,245 WARN 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 09:24:59,246 WARN 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 09:24:59,248 WARN 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 09:24:59,249 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 09:24:59,249 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 09:24:59,249 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 09:24:59,250 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 09:24:59,251 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 09:24:59,257 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:24:59,261 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 09:24:59,352 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:24:59,400 INFO L204 MainTranslator]: Completed translation [2025-03-04 09:24:59,401 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:24:59 WrapperNode [2025-03-04 09:24:59,401 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 09:24:59,402 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 09:24:59,402 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 09:24:59,403 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 09:24:59,407 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:24:59" (1/1) ... [2025-03-04 09:24:59,434 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:24:59" (1/1) ... [2025-03-04 09:24:59,478 INFO L138 Inliner]: procedures = 179, calls = 323, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1152 [2025-03-04 09:24:59,478 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 09:24:59,478 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 09:24:59,478 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 09:24:59,479 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 09:24:59,491 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:24:59" (1/1) ... [2025-03-04 09:24:59,492 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:24:59" (1/1) ... [2025-03-04 09:24:59,501 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:24:59" (1/1) ... [2025-03-04 09:24:59,564 INFO L175 MemorySlicer]: Split 301 memory accesses to 3 slices as follows [2, 34, 265]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 62 writes are split as follows [0, 4, 58]. [2025-03-04 09:24:59,568 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:24:59" (1/1) ... [2025-03-04 09:24:59,568 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:24:59" (1/1) ... [2025-03-04 09:24:59,596 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:24:59" (1/1) ... [2025-03-04 09:24:59,598 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:24:59" (1/1) ... [2025-03-04 09:24:59,601 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:24:59" (1/1) ... [2025-03-04 09:24:59,604 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:24:59" (1/1) ... [2025-03-04 09:24:59,610 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 09:24:59,611 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 09:24:59,611 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 09:24:59,611 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 09:24:59,612 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:24:59" (1/1) ... [2025-03-04 09:24:59,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 09:24:59,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:24:59,641 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 09:24:59,643 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 09:24:59,661 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2025-03-04 09:24:59,661 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2025-03-04 09:24:59,661 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2025-03-04 09:24:59,661 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2025-03-04 09:24:59,661 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2025-03-04 09:24:59,661 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-03-04 09:24:59,661 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-03-04 09:24:59,661 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2025-03-04 09:24:59,662 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-03-04 09:24:59,662 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-03-04 09:24:59,662 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2025-03-04 09:24:59,662 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-03-04 09:24:59,662 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-03-04 09:24:59,662 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2025-03-04 09:24:59,662 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-04 09:24:59,662 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 09:24:59,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-04 09:24:59,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-04 09:24:59,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-04 09:24:59,662 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-04 09:24:59,662 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-04 09:24:59,662 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-04 09:24:59,662 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-04 09:24:59,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-04 09:24:59,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-03-04 09:24:59,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-03-04 09:24:59,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2025-03-04 09:24:59,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-04 09:24:59,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-03-04 09:24:59,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2025-03-04 09:24:59,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 09:24:59,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 09:24:59,821 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 09:24:59,822 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 09:25:02,665 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L713: call ULTIMATE.dealloc(main_~#i~0#1.base, main_~#i~0#1.offset);havoc main_~#i~0#1.base, main_~#i~0#1.offset; [2025-03-04 09:25:02,732 INFO L? ?]: Removed 1292 outVars from TransFormulas that were not future-live. [2025-03-04 09:25:02,733 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 09:25:02,762 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 09:25:02,762 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 09:25:02,762 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 09:25:02 BoogieIcfgContainer [2025-03-04 09:25:02,762 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 09:25:02,764 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 09:25:02,764 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 09:25:02,767 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 09:25:02,767 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 09:24:58" (1/3) ... [2025-03-04 09:25:02,768 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e8ade74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 09:25:02, skipping insertion in model container [2025-03-04 09:25:02,768 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:24:59" (2/3) ... [2025-03-04 09:25:02,768 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e8ade74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 09:25:02, skipping insertion in model container [2025-03-04 09:25:02,768 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 09:25:02" (3/3) ... [2025-03-04 09:25:02,769 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test7-2.i [2025-03-04 09:25:02,778 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 09:25:02,779 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_FNV_test7-2.i that has 5 procedures, 1255 locations, 1 initial locations, 41 loop locations, and 628 error locations. [2025-03-04 09:25:02,828 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 09:25:02,838 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;@68ace714, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 09:25:02,838 INFO L334 AbstractCegarLoop]: Starting to check reachability of 628 error locations. [2025-03-04 09:25:02,845 INFO L276 IsEmpty]: Start isEmpty. Operand has 1245 states, 612 states have (on average 2.2450980392156863) internal successors, (1374), 1238 states have internal predecessors, (1374), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-03-04 09:25:02,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-03-04 09:25:02,848 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:25:02,849 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-03-04 09:25:02,849 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr625REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-04 09:25:02,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:25:02,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1411020, now seen corresponding path program 1 times [2025-03-04 09:25:02,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:25:02,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1905953766] [2025-03-04 09:25:02,861 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:25:02,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:25:02,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:25:02,864 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:25:02,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-04 09:25:02,996 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-04 09:25:03,005 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-04 09:25:03,005 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:25:03,005 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:25:03,007 INFO L256 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:25:03,014 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:25:03,035 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-04 09:25:03,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:25:03,048 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:25:03,049 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:25:03,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905953766] [2025-03-04 09:25:03,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1905953766] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:25:03,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:25:03,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 09:25:03,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027506092] [2025-03-04 09:25:03,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:25:03,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:25:03,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:25:03,069 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:25:03,069 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:25:03,072 INFO L87 Difference]: Start difference. First operand has 1245 states, 612 states have (on average 2.2450980392156863) internal successors, (1374), 1238 states have internal predecessors, (1374), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:25:04,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:25:04,469 INFO L93 Difference]: Finished difference Result 1414 states and 1490 transitions. [2025-03-04 09:25:04,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:25:04,471 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 09:25:04,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:25:04,488 INFO L225 Difference]: With dead ends: 1414 [2025-03-04 09:25:04,488 INFO L226 Difference]: Without dead ends: 1412 [2025-03-04 09:25:04,490 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 09:25:04,495 INFO L435 NwaCegarLoop]: 738 mSDtfsCounter, 1143 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 738 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1146 SdHoareTripleChecker+Valid, 898 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-04 09:25:04,495 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1146 Valid, 898 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 738 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-04 09:25:04,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1412 states. [2025-03-04 09:25:04,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1412 to 1226. [2025-03-04 09:25:04,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1226 states, 612 states have (on average 2.099673202614379) internal successors, (1285), 1220 states have internal predecessors, (1285), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 09:25:04,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1226 states to 1226 states and 1293 transitions. [2025-03-04 09:25:04,558 INFO L78 Accepts]: Start accepts. Automaton has 1226 states and 1293 transitions. Word has length 3 [2025-03-04 09:25:04,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:25:04,559 INFO L471 AbstractCegarLoop]: Abstraction has 1226 states and 1293 transitions. [2025-03-04 09:25:04,559 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 09:25:04,559 INFO L276 IsEmpty]: Start isEmpty. Operand 1226 states and 1293 transitions. [2025-03-04 09:25:04,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-03-04 09:25:04,559 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:25:04,560 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-03-04 09:25:04,566 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-04 09:25:04,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:25:04,763 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr626REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-04 09:25:04,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:25:04,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1411021, now seen corresponding path program 1 times [2025-03-04 09:25:04,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:25:04,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [757297346] [2025-03-04 09:25:04,764 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:25:04,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:25:04,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:25:04,766 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:25:04,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-04 09:25:04,859 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-04 09:25:04,862 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-04 09:25:04,862 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:25:04,862 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:25:04,863 INFO L256 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 09:25:04,865 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:25:04,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-04 09:25:04,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:25:04,879 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:25:04,879 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:25:04,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757297346] [2025-03-04 09:25:04,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757297346] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:25:04,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:25:04,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 09:25:04,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35422908] [2025-03-04 09:25:04,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:25:04,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:25:04,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:25:04,881 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:25:04,881 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:25:04,881 INFO L87 Difference]: Start difference. First operand 1226 states and 1293 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:25:06,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:25:06,959 INFO L93 Difference]: Finished difference Result 1819 states and 1929 transitions. [2025-03-04 09:25:06,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:25:06,959 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 09:25:06,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:25:06,964 INFO L225 Difference]: With dead ends: 1819 [2025-03-04 09:25:06,964 INFO L226 Difference]: Without dead ends: 1819 [2025-03-04 09:25:06,964 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 09:25:06,965 INFO L435 NwaCegarLoop]: 1001 mSDtfsCounter, 633 mSDsluCounter, 675 mSDsCounter, 0 mSdLazyCounter, 888 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 1676 SdHoareTripleChecker+Invalid, 894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-03-04 09:25:06,965 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [633 Valid, 1676 Invalid, 894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 888 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-03-04 09:25:06,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1819 states. [2025-03-04 09:25:06,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1819 to 1433. [2025-03-04 09:25:06,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1433 states, 820 states have (on average 2.080487804878049) internal successors, (1706), 1427 states have internal predecessors, (1706), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 09:25:06,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1433 states to 1433 states and 1714 transitions. [2025-03-04 09:25:06,988 INFO L78 Accepts]: Start accepts. Automaton has 1433 states and 1714 transitions. Word has length 3 [2025-03-04 09:25:06,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:25:06,988 INFO L471 AbstractCegarLoop]: Abstraction has 1433 states and 1714 transitions. [2025-03-04 09:25:06,988 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 09:25:06,988 INFO L276 IsEmpty]: Start isEmpty. Operand 1433 states and 1714 transitions. [2025-03-04 09:25:06,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-03-04 09:25:06,988 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:25:06,989 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:25:06,995 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-04 09:25:07,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:25:07,189 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr622REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-04 09:25:07,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:25:07,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1773160360, now seen corresponding path program 1 times [2025-03-04 09:25:07,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:25:07,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1162763382] [2025-03-04 09:25:07,190 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:25:07,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:25:07,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:25:07,192 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:25:07,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-04 09:25:07,287 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-04 09:25:07,297 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-04 09:25:07,297 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:25:07,297 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:25:07,298 INFO L256 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-04 09:25:07,299 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:25:07,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-04 09:25:07,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-04 09:25:07,349 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-03-04 09:25:07,365 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-04 09:25:07,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-03-04 09:25:07,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:25:07,384 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:25:07,384 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:25:07,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162763382] [2025-03-04 09:25:07,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162763382] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:25:07,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:25:07,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:25:07,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545893002] [2025-03-04 09:25:07,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:25:07,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:25:07,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:25:07,386 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:25:07,386 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:25:07,386 INFO L87 Difference]: Start difference. First operand 1433 states and 1714 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:25:09,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:25:09,326 INFO L93 Difference]: Finished difference Result 1613 states and 1905 transitions. [2025-03-04 09:25:09,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:25:09,326 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 09:25:09,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:25:09,330 INFO L225 Difference]: With dead ends: 1613 [2025-03-04 09:25:09,330 INFO L226 Difference]: Without dead ends: 1613 [2025-03-04 09:25:09,330 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 09:25:09,331 INFO L435 NwaCegarLoop]: 421 mSDtfsCounter, 2571 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 1095 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2574 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 1119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-03-04 09:25:09,331 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2574 Valid, 513 Invalid, 1119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1095 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-03-04 09:25:09,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1613 states. [2025-03-04 09:25:09,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1613 to 1214. [2025-03-04 09:25:09,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1214 states, 612 states have (on average 2.0784313725490198) internal successors, (1272), 1208 states have internal predecessors, (1272), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 09:25:09,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1214 states to 1214 states and 1280 transitions. [2025-03-04 09:25:09,345 INFO L78 Accepts]: Start accepts. Automaton has 1214 states and 1280 transitions. Word has length 7 [2025-03-04 09:25:09,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:25:09,346 INFO L471 AbstractCegarLoop]: Abstraction has 1214 states and 1280 transitions. [2025-03-04 09:25:09,346 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 09:25:09,346 INFO L276 IsEmpty]: Start isEmpty. Operand 1214 states and 1280 transitions. [2025-03-04 09:25:09,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-03-04 09:25:09,346 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:25:09,346 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:25:09,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-04 09:25:09,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:25:09,547 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr619REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-04 09:25:09,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:25:09,547 INFO L85 PathProgramCache]: Analyzing trace with hash -866602378, now seen corresponding path program 1 times [2025-03-04 09:25:09,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:25:09,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2140041723] [2025-03-04 09:25:09,548 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:25:09,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:25:09,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:25:09,550 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:25:09,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-04 09:25:09,650 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-04 09:25:09,658 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-04 09:25:09,658 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:25:09,658 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:25:09,660 INFO L256 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:25:09,661 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:25:09,665 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-04 09:25:09,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:25:09,672 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:25:09,673 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:25:09,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140041723] [2025-03-04 09:25:09,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140041723] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:25:09,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:25:09,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 09:25:09,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773532264] [2025-03-04 09:25:09,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:25:09,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:25:09,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:25:09,674 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:25:09,674 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:25:09,674 INFO L87 Difference]: Start difference. First operand 1214 states and 1280 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:25:10,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:25:10,973 INFO L93 Difference]: Finished difference Result 1547 states and 1643 transitions. [2025-03-04 09:25:10,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:25:10,974 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 09:25:10,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:25:10,977 INFO L225 Difference]: With dead ends: 1547 [2025-03-04 09:25:10,977 INFO L226 Difference]: Without dead ends: 1547 [2025-03-04 09:25:10,977 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 09:25:10,978 INFO L435 NwaCegarLoop]: 1141 mSDtfsCounter, 920 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 853 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 1486 SdHoareTripleChecker+Invalid, 903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-04 09:25:10,978 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [923 Valid, 1486 Invalid, 903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 853 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-04 09:25:10,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1547 states. [2025-03-04 09:25:10,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1547 to 1167. [2025-03-04 09:25:10,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1167 states, 612 states have (on average 2.0016339869281046) internal successors, (1225), 1161 states have internal predecessors, (1225), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 09:25:10,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 1233 transitions. [2025-03-04 09:25:10,992 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 1233 transitions. Word has length 8 [2025-03-04 09:25:10,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:25:10,992 INFO L471 AbstractCegarLoop]: Abstraction has 1167 states and 1233 transitions. [2025-03-04 09:25:10,992 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 09:25:10,992 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 1233 transitions. [2025-03-04 09:25:10,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-03-04 09:25:10,992 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:25:10,992 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:25:10,999 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-04 09:25:11,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:25:11,193 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr620REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-04 09:25:11,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:25:11,194 INFO L85 PathProgramCache]: Analyzing trace with hash -866602377, now seen corresponding path program 1 times [2025-03-04 09:25:11,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:25:11,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1444256100] [2025-03-04 09:25:11,194 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:25:11,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:25:11,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:25:11,195 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:25:11,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-04 09:25:11,278 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-04 09:25:11,287 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-04 09:25:11,287 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:25:11,287 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:25:11,288 INFO L256 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 09:25:11,289 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:25:11,299 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-04 09:25:11,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:25:11,322 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:25:11,322 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:25:11,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444256100] [2025-03-04 09:25:11,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444256100] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:25:11,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:25:11,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 09:25:11,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566162538] [2025-03-04 09:25:11,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:25:11,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:25:11,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:25:11,323 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:25:11,323 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:25:11,323 INFO L87 Difference]: Start difference. First operand 1167 states and 1233 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:25:12,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:25:12,867 INFO L93 Difference]: Finished difference Result 1637 states and 1736 transitions. [2025-03-04 09:25:12,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:25:12,867 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 09:25:12,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:25:12,871 INFO L225 Difference]: With dead ends: 1637 [2025-03-04 09:25:12,871 INFO L226 Difference]: Without dead ends: 1637 [2025-03-04 09:25:12,871 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 09:25:12,873 INFO L435 NwaCegarLoop]: 1333 mSDtfsCounter, 688 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 822 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 1852 SdHoareTripleChecker+Invalid, 835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-03-04 09:25:12,873 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [688 Valid, 1852 Invalid, 835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 822 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-03-04 09:25:12,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1637 states. [2025-03-04 09:25:12,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1637 to 1194. [2025-03-04 09:25:12,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1194 states, 649 states have (on average 1.9861325115562403) internal successors, (1289), 1188 states have internal predecessors, (1289), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 09:25:12,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 1297 transitions. [2025-03-04 09:25:12,891 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 1297 transitions. Word has length 8 [2025-03-04 09:25:12,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:25:12,891 INFO L471 AbstractCegarLoop]: Abstraction has 1194 states and 1297 transitions. [2025-03-04 09:25:12,891 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 09:25:12,892 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 1297 transitions. [2025-03-04 09:25:12,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-03-04 09:25:12,892 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:25:12,892 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:25:12,898 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 09:25:13,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:25:13,092 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr295REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-04 09:25:13,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:25:13,093 INFO L85 PathProgramCache]: Analyzing trace with hash -796701006, now seen corresponding path program 1 times [2025-03-04 09:25:13,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:25:13,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1737819346] [2025-03-04 09:25:13,094 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:25:13,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:25:13,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:25:13,096 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:25:13,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-04 09:25:13,187 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-04 09:25:13,198 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-04 09:25:13,199 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:25:13,199 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:25:13,200 INFO L256 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:25:13,202 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:25:13,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:25:13,235 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:25:13,235 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:25:13,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737819346] [2025-03-04 09:25:13,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1737819346] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:25:13,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:25:13,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:25:13,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384020578] [2025-03-04 09:25:13,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:25:13,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:25:13,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:25:13,236 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:25:13,236 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:25:13,236 INFO L87 Difference]: Start difference. First operand 1194 states and 1297 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:25:14,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:25:14,653 INFO L93 Difference]: Finished difference Result 1361 states and 1473 transitions. [2025-03-04 09:25:14,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:25:14,654 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2025-03-04 09:25:14,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:25:14,657 INFO L225 Difference]: With dead ends: 1361 [2025-03-04 09:25:14,657 INFO L226 Difference]: Without dead ends: 1361 [2025-03-04 09:25:14,657 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:25:14,657 INFO L435 NwaCegarLoop]: 693 mSDtfsCounter, 1141 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 1221 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1144 SdHoareTripleChecker+Valid, 1434 SdHoareTripleChecker+Invalid, 1251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-04 09:25:14,657 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1144 Valid, 1434 Invalid, 1251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1221 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-04 09:25:14,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1361 states. [2025-03-04 09:25:14,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1361 to 1171. [2025-03-04 09:25:14,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1171 states, 649 states have (on average 1.950693374422188) internal successors, (1266), 1165 states have internal predecessors, (1266), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 09:25:14,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1171 states to 1171 states and 1274 transitions. [2025-03-04 09:25:14,673 INFO L78 Accepts]: Start accepts. Automaton has 1171 states and 1274 transitions. Word has length 12 [2025-03-04 09:25:14,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:25:14,673 INFO L471 AbstractCegarLoop]: Abstraction has 1171 states and 1274 transitions. [2025-03-04 09:25:14,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:25:14,673 INFO L276 IsEmpty]: Start isEmpty. Operand 1171 states and 1274 transitions. [2025-03-04 09:25:14,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-03-04 09:25:14,673 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:25:14,673 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:25:14,680 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-04 09:25:14,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:25:14,874 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr296REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-04 09:25:14,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:25:14,874 INFO L85 PathProgramCache]: Analyzing trace with hash -796701005, now seen corresponding path program 1 times [2025-03-04 09:25:14,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:25:14,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [174810372] [2025-03-04 09:25:14,875 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:25:14,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:25:14,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:25:14,876 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:25:14,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-04 09:25:14,962 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-04 09:25:14,973 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-04 09:25:14,973 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:25:14,973 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:25:14,974 INFO L256 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-04 09:25:14,976 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:25:14,982 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-04 09:25:15,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:25:15,053 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:25:15,053 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:25:15,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174810372] [2025-03-04 09:25:15,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174810372] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:25:15,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:25:15,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:25:15,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276423722] [2025-03-04 09:25:15,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:25:15,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:25:15,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:25:15,054 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:25:15,054 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:25:15,054 INFO L87 Difference]: Start difference. First operand 1171 states and 1274 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:25:17,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:25:17,019 INFO L93 Difference]: Finished difference Result 1712 states and 1850 transitions. [2025-03-04 09:25:17,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:25:17,020 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2025-03-04 09:25:17,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:25:17,023 INFO L225 Difference]: With dead ends: 1712 [2025-03-04 09:25:17,023 INFO L226 Difference]: Without dead ends: 1712 [2025-03-04 09:25:17,023 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:25:17,024 INFO L435 NwaCegarLoop]: 940 mSDtfsCounter, 612 mSDsluCounter, 1209 mSDsCounter, 0 mSdLazyCounter, 1425 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 612 SdHoareTripleChecker+Valid, 2149 SdHoareTripleChecker+Invalid, 1440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-03-04 09:25:17,024 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [612 Valid, 2149 Invalid, 1440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1425 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-03-04 09:25:17,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1712 states. [2025-03-04 09:25:17,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1712 to 1360. [2025-03-04 09:25:17,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1360 states, 838 states have (on average 1.9367541766109786) internal successors, (1623), 1354 states have internal predecessors, (1623), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 09:25:17,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 1631 transitions. [2025-03-04 09:25:17,038 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 1631 transitions. Word has length 12 [2025-03-04 09:25:17,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:25:17,038 INFO L471 AbstractCegarLoop]: Abstraction has 1360 states and 1631 transitions. [2025-03-04 09:25:17,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:25:17,039 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 1631 transitions. [2025-03-04 09:25:17,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-03-04 09:25:17,040 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:25:17,040 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:25:17,046 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-04 09:25:17,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:25:17,240 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr104REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-04 09:25:17,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:25:17,241 INFO L85 PathProgramCache]: Analyzing trace with hash -809603474, now seen corresponding path program 1 times [2025-03-04 09:25:17,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:25:17,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1492923176] [2025-03-04 09:25:17,241 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:25:17,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:25:17,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:25:17,243 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:25:17,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-04 09:25:17,326 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-04 09:25:17,336 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-04 09:25:17,336 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:25:17,336 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:25:17,337 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:25:17,338 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:25:17,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:25:17,380 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:25:17,380 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:25:17,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492923176] [2025-03-04 09:25:17,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492923176] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:25:17,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:25:17,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:25:17,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850906351] [2025-03-04 09:25:17,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:25:17,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:25:17,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:25:17,381 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:25:17,381 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:25:17,381 INFO L87 Difference]: Start difference. First operand 1360 states and 1631 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:25:17,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:25:17,613 INFO L93 Difference]: Finished difference Result 2071 states and 2547 transitions. [2025-03-04 09:25:17,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:25:17,614 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2025-03-04 09:25:17,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:25:17,618 INFO L225 Difference]: With dead ends: 2071 [2025-03-04 09:25:17,618 INFO L226 Difference]: Without dead ends: 2071 [2025-03-04 09:25:17,618 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:25:17,618 INFO L435 NwaCegarLoop]: 1373 mSDtfsCounter, 601 mSDsluCounter, 1075 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 601 SdHoareTripleChecker+Valid, 2448 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-04 09:25:17,619 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [601 Valid, 2448 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-04 09:25:17,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2071 states. [2025-03-04 09:25:17,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2071 to 1723. [2025-03-04 09:25:17,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1723 states, 1201 states have (on average 1.9050791007493755) internal successors, (2288), 1717 states have internal predecessors, (2288), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 09:25:17,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1723 states to 1723 states and 2296 transitions. [2025-03-04 09:25:17,638 INFO L78 Accepts]: Start accepts. Automaton has 1723 states and 2296 transitions. Word has length 12 [2025-03-04 09:25:17,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:25:17,638 INFO L471 AbstractCegarLoop]: Abstraction has 1723 states and 2296 transitions. [2025-03-04 09:25:17,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:25:17,638 INFO L276 IsEmpty]: Start isEmpty. Operand 1723 states and 2296 transitions. [2025-03-04 09:25:17,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-03-04 09:25:17,639 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:25:17,639 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:25:17,646 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-04 09:25:17,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:25:17,839 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-04 09:25:17,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:25:17,840 INFO L85 PathProgramCache]: Analyzing trace with hash 673374616, now seen corresponding path program 1 times [2025-03-04 09:25:17,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:25:17,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [930166863] [2025-03-04 09:25:17,840 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:25:17,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:25:17,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:25:17,842 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:25:17,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-04 09:25:17,927 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-04 09:25:17,938 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-04 09:25:17,938 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:25:17,938 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:25:17,940 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-04 09:25:17,941 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:25:17,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:25:17,988 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:25:17,988 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:25:17,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930166863] [2025-03-04 09:25:17,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930166863] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:25:17,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:25:17,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:25:17,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365387008] [2025-03-04 09:25:17,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:25:17,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:25:17,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:25:17,989 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:25:17,989 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:25:17,989 INFO L87 Difference]: Start difference. First operand 1723 states and 2296 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:25:18,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:25:18,414 INFO L93 Difference]: Finished difference Result 2072 states and 2547 transitions. [2025-03-04 09:25:18,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:25:18,415 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2025-03-04 09:25:18,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:25:18,419 INFO L225 Difference]: With dead ends: 2072 [2025-03-04 09:25:18,419 INFO L226 Difference]: Without dead ends: 2072 [2025-03-04 09:25:18,419 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:25:18,420 INFO L435 NwaCegarLoop]: 1372 mSDtfsCounter, 606 mSDsluCounter, 2341 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 606 SdHoareTripleChecker+Valid, 3713 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-04 09:25:18,420 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [606 Valid, 3713 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-04 09:25:18,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2072 states. [2025-03-04 09:25:18,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2072 to 1725. [2025-03-04 09:25:18,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1725 states, 1203 states have (on average 1.9027431421446384) internal successors, (2289), 1719 states have internal predecessors, (2289), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 09:25:18,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1725 states to 1725 states and 2297 transitions. [2025-03-04 09:25:18,436 INFO L78 Accepts]: Start accepts. Automaton has 1725 states and 2297 transitions. Word has length 13 [2025-03-04 09:25:18,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:25:18,436 INFO L471 AbstractCegarLoop]: Abstraction has 1725 states and 2297 transitions. [2025-03-04 09:25:18,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:25:18,437 INFO L276 IsEmpty]: Start isEmpty. Operand 1725 states and 2297 transitions. [2025-03-04 09:25:18,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-03-04 09:25:18,437 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:25:18,437 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:25:18,444 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-03-04 09:25:18,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:25:18,638 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr272REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-04 09:25:18,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:25:18,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1072028596, now seen corresponding path program 1 times [2025-03-04 09:25:18,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:25:18,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1767375663] [2025-03-04 09:25:18,638 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:25:18,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:25:18,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:25:18,640 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:25:18,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-04 09:25:18,731 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-04 09:25:18,740 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-04 09:25:18,741 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:25:18,741 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:25:18,742 INFO L256 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:25:18,743 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:25:18,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:25:18,752 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:25:18,752 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:25:18,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767375663] [2025-03-04 09:25:18,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767375663] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:25:18,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:25:18,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:25:18,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233536815] [2025-03-04 09:25:18,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:25:18,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:25:18,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:25:18,752 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:25:18,752 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:25:18,752 INFO L87 Difference]: Start difference. First operand 1725 states and 2297 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:25:18,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:25:18,801 INFO L93 Difference]: Finished difference Result 1653 states and 2174 transitions. [2025-03-04 09:25:18,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 09:25:18,801 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2025-03-04 09:25:18,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:25:18,804 INFO L225 Difference]: With dead ends: 1653 [2025-03-04 09:25:18,804 INFO L226 Difference]: Without dead ends: 1653 [2025-03-04 09:25:18,805 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:25:18,805 INFO L435 NwaCegarLoop]: 1112 mSDtfsCounter, 45 mSDsluCounter, 2201 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 3313 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 09:25:18,805 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 3313 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 09:25:18,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1653 states. [2025-03-04 09:25:18,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1653 to 1653. [2025-03-04 09:25:18,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1653 states, 1150 states have (on average 1.8834782608695653) internal successors, (2166), 1647 states have internal predecessors, (2166), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 09:25:18,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1653 states to 1653 states and 2174 transitions. [2025-03-04 09:25:18,820 INFO L78 Accepts]: Start accepts. Automaton has 1653 states and 2174 transitions. Word has length 13 [2025-03-04 09:25:18,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:25:18,820 INFO L471 AbstractCegarLoop]: Abstraction has 1653 states and 2174 transitions. [2025-03-04 09:25:18,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:25:18,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1653 states and 2174 transitions. [2025-03-04 09:25:18,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-03-04 09:25:18,821 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:25:18,821 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:25:18,827 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-03-04 09:25:19,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:25:19,021 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-04 09:25:19,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:25:19,022 INFO L85 PathProgramCache]: Analyzing trace with hash -639889847, now seen corresponding path program 1 times [2025-03-04 09:25:19,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:25:19,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1980554258] [2025-03-04 09:25:19,022 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:25:19,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:25:19,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:25:19,024 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:25:19,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-04 09:25:19,110 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-04 09:25:19,121 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-04 09:25:19,121 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:25:19,121 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:25:19,122 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-04 09:25:19,124 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:25:19,132 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-04 09:25:19,132 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-04 09:25:19,135 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 33 treesize of output 31 [2025-03-04 09:25:19,161 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-04 09:25:19,162 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 62 treesize of output 22 [2025-03-04 09:25:19,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:25:19,186 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:25:19,186 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:25:19,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980554258] [2025-03-04 09:25:19,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1980554258] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:25:19,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:25:19,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:25:19,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571059532] [2025-03-04 09:25:19,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:25:19,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:25:19,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:25:19,186 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:25:19,187 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:25:19,187 INFO L87 Difference]: Start difference. First operand 1653 states and 2174 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:25:19,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:25:19,378 INFO L93 Difference]: Finished difference Result 2373 states and 2731 transitions. [2025-03-04 09:25:19,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:25:19,379 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2025-03-04 09:25:19,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:25:19,383 INFO L225 Difference]: With dead ends: 2373 [2025-03-04 09:25:19,383 INFO L226 Difference]: Without dead ends: 2373 [2025-03-04 09:25:19,383 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:25:19,383 INFO L435 NwaCegarLoop]: 1113 mSDtfsCounter, 1066 mSDsluCounter, 2217 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1069 SdHoareTripleChecker+Valid, 3330 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-04 09:25:19,383 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1069 Valid, 3330 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-04 09:25:19,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2373 states. [2025-03-04 09:25:19,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2373 to 1344. [2025-03-04 09:25:19,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1344 states, 841 states have (on average 1.896551724137931) internal successors, (1595), 1338 states have internal predecessors, (1595), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 09:25:19,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1344 states to 1344 states and 1603 transitions. [2025-03-04 09:25:19,396 INFO L78 Accepts]: Start accepts. Automaton has 1344 states and 1603 transitions. Word has length 14 [2025-03-04 09:25:19,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:25:19,397 INFO L471 AbstractCegarLoop]: Abstraction has 1344 states and 1603 transitions. [2025-03-04 09:25:19,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:25:19,397 INFO L276 IsEmpty]: Start isEmpty. Operand 1344 states and 1603 transitions. [2025-03-04 09:25:19,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-03-04 09:25:19,397 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:25:19,397 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:25:19,409 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-03-04 09:25:19,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:25:19,598 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr611REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-04 09:25:19,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:25:19,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1325205508, now seen corresponding path program 1 times [2025-03-04 09:25:19,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:25:19,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1760675957] [2025-03-04 09:25:19,598 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:25:19,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:25:19,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:25:19,600 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:25:19,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-04 09:25:19,697 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-04 09:25:19,717 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-04 09:25:19,717 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:25:19,717 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:25:19,720 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 09:25:19,725 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:25:19,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-04 09:25:19,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:25:19,755 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:25:19,756 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:25:19,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760675957] [2025-03-04 09:25:19,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760675957] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:25:19,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:25:19,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:25:19,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150353894] [2025-03-04 09:25:19,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:25:19,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:25:19,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:25:19,757 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:25:19,757 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:25:19,757 INFO L87 Difference]: Start difference. First operand 1344 states and 1603 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:25:21,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:25:21,130 INFO L93 Difference]: Finished difference Result 1715 states and 2068 transitions. [2025-03-04 09:25:21,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:25:21,131 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-03-04 09:25:21,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:25:21,134 INFO L225 Difference]: With dead ends: 1715 [2025-03-04 09:25:21,134 INFO L226 Difference]: Without dead ends: 1715 [2025-03-04 09:25:21,134 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:25:21,135 INFO L435 NwaCegarLoop]: 677 mSDtfsCounter, 885 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 1295 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 1479 SdHoareTripleChecker+Invalid, 1322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-04 09:25:21,135 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [888 Valid, 1479 Invalid, 1322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1295 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-04 09:25:21,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1715 states. [2025-03-04 09:25:21,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1715 to 1321. [2025-03-04 09:25:21,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1321 states, 841 states have (on average 1.8418549346016646) internal successors, (1549), 1315 states have internal predecessors, (1549), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 09:25:21,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1321 states to 1321 states and 1557 transitions. [2025-03-04 09:25:21,146 INFO L78 Accepts]: Start accepts. Automaton has 1321 states and 1557 transitions. Word has length 17 [2025-03-04 09:25:21,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:25:21,146 INFO L471 AbstractCegarLoop]: Abstraction has 1321 states and 1557 transitions. [2025-03-04 09:25:21,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:25:21,146 INFO L276 IsEmpty]: Start isEmpty. Operand 1321 states and 1557 transitions. [2025-03-04 09:25:21,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-03-04 09:25:21,147 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:25:21,147 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:25:21,153 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 09:25:21,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:25:21,351 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr612REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-04 09:25:21,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:25:21,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1325205507, now seen corresponding path program 1 times [2025-03-04 09:25:21,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:25:21,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [88602605] [2025-03-04 09:25:21,351 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:25:21,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:25:21,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:25:21,353 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:25:21,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-04 09:25:21,448 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-04 09:25:21,469 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-04 09:25:21,470 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:25:21,470 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:25:21,473 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-04 09:25:21,474 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:25:21,482 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-04 09:25:21,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:25:21,539 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:25:21,539 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:25:21,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88602605] [2025-03-04 09:25:21,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88602605] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:25:21,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:25:21,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:25:21,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703567202] [2025-03-04 09:25:21,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:25:21,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:25:21,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:25:21,540 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:25:21,540 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:25:21,540 INFO L87 Difference]: Start difference. First operand 1321 states and 1557 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:25:23,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:25:23,496 INFO L93 Difference]: Finished difference Result 1956 states and 2310 transitions. [2025-03-04 09:25:23,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:25:23,497 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-03-04 09:25:23,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:25:23,501 INFO L225 Difference]: With dead ends: 1956 [2025-03-04 09:25:23,501 INFO L226 Difference]: Without dead ends: 1956 [2025-03-04 09:25:23,501 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:25:23,501 INFO L435 NwaCegarLoop]: 1272 mSDtfsCounter, 726 mSDsluCounter, 1283 mSDsCounter, 0 mSdLazyCounter, 1480 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 2555 SdHoareTripleChecker+Invalid, 1502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-03-04 09:25:23,501 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [726 Valid, 2555 Invalid, 1502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1480 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-03-04 09:25:23,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1956 states. [2025-03-04 09:25:23,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1956 to 1435. [2025-03-04 09:25:23,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1435 states, 955 states have (on average 1.7664921465968586) internal successors, (1687), 1429 states have internal predecessors, (1687), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 09:25:23,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1435 states to 1435 states and 1695 transitions. [2025-03-04 09:25:23,521 INFO L78 Accepts]: Start accepts. Automaton has 1435 states and 1695 transitions. Word has length 17 [2025-03-04 09:25:23,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:25:23,521 INFO L471 AbstractCegarLoop]: Abstraction has 1435 states and 1695 transitions. [2025-03-04 09:25:23,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:25:23,521 INFO L276 IsEmpty]: Start isEmpty. Operand 1435 states and 1695 transitions. [2025-03-04 09:25:23,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2025-03-04 09:25:23,522 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:25:23,522 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:25:23,534 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 09:25:23,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:25:23,722 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr612REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-04 09:25:23,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:25:23,723 INFO L85 PathProgramCache]: Analyzing trace with hash -553119500, now seen corresponding path program 1 times [2025-03-04 09:25:23,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:25:23,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1382076015] [2025-03-04 09:25:23,723 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:25:23,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:25:23,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:25:23,725 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:25:23,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-04 09:25:23,829 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-03-04 09:25:23,877 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-03-04 09:25:23,877 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:25:23,877 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:25:23,886 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-04 09:25:23,887 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:25:23,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-04 09:25:24,025 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 09:25:24,025 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:25:24,340 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 09:25:24,340 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:25:24,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382076015] [2025-03-04 09:25:24,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382076015] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 09:25:24,340 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 09:25:24,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2025-03-04 09:25:24,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980481716] [2025-03-04 09:25:24,341 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 09:25:24,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-04 09:25:24,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:25:24,341 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-04 09:25:24,341 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-04 09:25:24,342 INFO L87 Difference]: Start difference. First operand 1435 states and 1695 transitions. Second operand has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:25:30,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:25:30,808 INFO L93 Difference]: Finished difference Result 2312 states and 2800 transitions. [2025-03-04 09:25:30,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-04 09:25:30,808 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2025-03-04 09:25:30,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:25:30,813 INFO L225 Difference]: With dead ends: 2312 [2025-03-04 09:25:30,813 INFO L226 Difference]: Without dead ends: 2312 [2025-03-04 09:25:30,813 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2025-03-04 09:25:30,813 INFO L435 NwaCegarLoop]: 1299 mSDtfsCounter, 2132 mSDsluCounter, 3698 mSDsCounter, 0 mSdLazyCounter, 3734 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2133 SdHoareTripleChecker+Valid, 4997 SdHoareTripleChecker+Invalid, 3761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 3734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2025-03-04 09:25:30,813 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2133 Valid, 4997 Invalid, 3761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 3734 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2025-03-04 09:25:30,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2312 states. [2025-03-04 09:25:30,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2312 to 1599. [2025-03-04 09:25:30,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1599 states, 1119 states have (on average 1.7149240393208223) internal successors, (1919), 1593 states have internal predecessors, (1919), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 09:25:30,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1599 states to 1599 states and 1927 transitions. [2025-03-04 09:25:30,827 INFO L78 Accepts]: Start accepts. Automaton has 1599 states and 1927 transitions. Word has length 36 [2025-03-04 09:25:30,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:25:30,827 INFO L471 AbstractCegarLoop]: Abstraction has 1599 states and 1927 transitions. [2025-03-04 09:25:30,827 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:25:30,828 INFO L276 IsEmpty]: Start isEmpty. Operand 1599 states and 1927 transitions. [2025-03-04 09:25:30,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2025-03-04 09:25:30,830 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:25:30,830 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:25:30,839 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 09:25:31,030 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 09:25:31,030 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr530REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-04 09:25:31,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:25:31,031 INFO L85 PathProgramCache]: Analyzing trace with hash 501488164, now seen corresponding path program 1 times [2025-03-04 09:25:31,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:25:31,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [468272344] [2025-03-04 09:25:31,031 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:25:31,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:25:31,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:25:31,033 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 09:25:31,034 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 09:25:31,139 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-03-04 09:25:31,189 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-03-04 09:25:31,190 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:25:31,190 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:25:31,197 INFO L256 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:25:31,199 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:25:31,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:25:31,230 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:25:31,230 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:25:31,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468272344] [2025-03-04 09:25:31,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468272344] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:25:31,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:25:31,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:25:31,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592369734] [2025-03-04 09:25:31,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:25:31,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:25:31,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:25:31,231 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:25:31,231 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:25:31,231 INFO L87 Difference]: Start difference. First operand 1599 states and 1927 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:25:31,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:25:31,295 INFO L93 Difference]: Finished difference Result 1288 states and 1491 transitions. [2025-03-04 09:25:31,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 09:25:31,296 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2025-03-04 09:25:31,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:25:31,301 INFO L225 Difference]: With dead ends: 1288 [2025-03-04 09:25:31,301 INFO L226 Difference]: Without dead ends: 1288 [2025-03-04 09:25:31,301 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:25:31,305 INFO L435 NwaCegarLoop]: 1049 mSDtfsCounter, 56 mSDsluCounter, 2025 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 3074 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 09:25:31,305 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 3074 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 09:25:31,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1288 states. [2025-03-04 09:25:31,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1288 to 1286. [2025-03-04 09:25:31,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1286 states, 829 states have (on average 1.7864897466827503) internal successors, (1481), 1280 states have internal predecessors, (1481), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 09:25:31,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1286 states to 1286 states and 1489 transitions. [2025-03-04 09:25:31,315 INFO L78 Accepts]: Start accepts. Automaton has 1286 states and 1489 transitions. Word has length 51 [2025-03-04 09:25:31,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:25:31,315 INFO L471 AbstractCegarLoop]: Abstraction has 1286 states and 1489 transitions. [2025-03-04 09:25:31,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:25:31,315 INFO L276 IsEmpty]: Start isEmpty. Operand 1286 states and 1489 transitions. [2025-03-04 09:25:31,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2025-03-04 09:25:31,315 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:25:31,315 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:25:31,326 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 09:25:31,516 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 09:25:31,517 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr530REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-04 09:25:31,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:25:31,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1298620196, now seen corresponding path program 1 times [2025-03-04 09:25:31,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:25:31,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [820816321] [2025-03-04 09:25:31,518 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:25:31,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:25:31,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:25:31,520 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 09:25:31,520 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 09:25:31,628 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 59 statements into 1 equivalence classes. [2025-03-04 09:25:31,697 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 59 of 59 statements. [2025-03-04 09:25:31,697 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:25:31,698 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:25:31,707 INFO L256 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-04 09:25:31,709 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:25:31,714 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-04 09:25:32,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-04 09:25:32,014 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-03-04 09:25:32,024 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-04 09:25:32,025 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-03-04 09:25:32,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:25:32,029 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:25:32,029 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:25:32,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820816321] [2025-03-04 09:25:32,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820816321] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:25:32,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:25:32,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:25:32,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891599463] [2025-03-04 09:25:32,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:25:32,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 09:25:32,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:25:32,030 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 09:25:32,030 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:25:32,030 INFO L87 Difference]: Start difference. First operand 1286 states and 1489 transitions. Second operand has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:25:33,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:25:33,797 INFO L93 Difference]: Finished difference Result 1634 states and 1954 transitions. [2025-03-04 09:25:33,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 09:25:33,797 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2025-03-04 09:25:33,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:25:33,800 INFO L225 Difference]: With dead ends: 1634 [2025-03-04 09:25:33,800 INFO L226 Difference]: Without dead ends: 1634 [2025-03-04 09:25:33,800 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2025-03-04 09:25:33,801 INFO L435 NwaCegarLoop]: 510 mSDtfsCounter, 1829 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 1378 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1832 SdHoareTripleChecker+Valid, 982 SdHoareTripleChecker+Invalid, 1425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-03-04 09:25:33,801 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1832 Valid, 982 Invalid, 1425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1378 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-03-04 09:25:33,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1634 states. [2025-03-04 09:25:33,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1634 to 1211. [2025-03-04 09:25:33,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1211 states, 792 states have (on average 1.7285353535353536) internal successors, (1369), 1205 states have internal predecessors, (1369), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 09:25:33,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1211 states to 1211 states and 1377 transitions. [2025-03-04 09:25:33,811 INFO L78 Accepts]: Start accepts. Automaton has 1211 states and 1377 transitions. Word has length 59 [2025-03-04 09:25:33,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:25:33,811 INFO L471 AbstractCegarLoop]: Abstraction has 1211 states and 1377 transitions. [2025-03-04 09:25:33,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:25:33,811 INFO L276 IsEmpty]: Start isEmpty. Operand 1211 states and 1377 transitions. [2025-03-04 09:25:33,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2025-03-04 09:25:33,812 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:25:33,812 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:25:33,822 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 09:25:34,012 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 09:25:34,012 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr523REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-04 09:25:34,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:25:34,013 INFO L85 PathProgramCache]: Analyzing trace with hash -379593052, now seen corresponding path program 1 times [2025-03-04 09:25:34,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:25:34,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [286187262] [2025-03-04 09:25:34,013 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:25:34,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:25:34,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:25:34,015 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 09:25:34,015 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 09:25:34,136 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes. [2025-03-04 09:25:34,185 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements. [2025-03-04 09:25:34,185 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:25:34,185 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:25:34,193 INFO L256 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-04 09:25:34,195 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:25:34,199 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-04 09:25:34,210 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 09:25:34,222 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 09:25:34,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:25:34,227 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:25:34,227 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:25:34,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286187262] [2025-03-04 09:25:34,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [286187262] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:25:34,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:25:34,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:25:34,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998529892] [2025-03-04 09:25:34,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:25:34,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 09:25:34,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:25:34,228 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 09:25:34,228 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:25:34,228 INFO L87 Difference]: Start difference. First operand 1211 states and 1377 transitions. Second operand has 5 states, 4 states have (on average 16.0) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:25:35,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:25:35,644 INFO L93 Difference]: Finished difference Result 1210 states and 1376 transitions. [2025-03-04 09:25:35,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 09:25:35,644 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.0) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2025-03-04 09:25:35,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:25:35,646 INFO L225 Difference]: With dead ends: 1210 [2025-03-04 09:25:35,646 INFO L226 Difference]: Without dead ends: 1210 [2025-03-04 09:25:35,646 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-04 09:25:35,647 INFO L435 NwaCegarLoop]: 1021 mSDtfsCounter, 2 mSDsluCounter, 1600 mSDsCounter, 0 mSdLazyCounter, 1470 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2621 SdHoareTripleChecker+Invalid, 1471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-04 09:25:35,647 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2621 Invalid, 1471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1470 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-04 09:25:35,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2025-03-04 09:25:35,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1210. [2025-03-04 09:25:35,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1210 states, 792 states have (on average 1.7272727272727273) internal successors, (1368), 1204 states have internal predecessors, (1368), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 09:25:35,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1376 transitions. [2025-03-04 09:25:35,655 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1376 transitions. Word has length 64 [2025-03-04 09:25:35,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:25:35,655 INFO L471 AbstractCegarLoop]: Abstraction has 1210 states and 1376 transitions. [2025-03-04 09:25:35,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.0) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:25:35,655 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1376 transitions. [2025-03-04 09:25:35,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2025-03-04 09:25:35,656 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:25:35,656 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:25:35,665 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 09:25:35,856 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 09:25:35,857 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr524REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-04 09:25:35,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:25:35,857 INFO L85 PathProgramCache]: Analyzing trace with hash -379593051, now seen corresponding path program 1 times [2025-03-04 09:25:35,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:25:35,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [488641481] [2025-03-04 09:25:35,857 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:25:35,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:25:35,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:25:35,859 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 09:25:35,860 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 09:25:35,981 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes. [2025-03-04 09:25:36,034 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements. [2025-03-04 09:25:36,034 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:25:36,034 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:25:36,040 INFO L256 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-04 09:25:36,042 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:25:36,048 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-04 09:25:36,060 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 09:25:36,063 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 09:25:36,087 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 09:25:36,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:25:36,104 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:25:36,104 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:25:36,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488641481] [2025-03-04 09:25:36,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488641481] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:25:36,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:25:36,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:25:36,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392770615] [2025-03-04 09:25:36,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:25:36,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 09:25:36,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:25:36,105 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 09:25:36,105 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:25:36,105 INFO L87 Difference]: Start difference. First operand 1210 states and 1376 transitions. Second operand has 5 states, 4 states have (on average 16.0) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:25:37,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:25:37,806 INFO L93 Difference]: Finished difference Result 1209 states and 1375 transitions. [2025-03-04 09:25:37,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 09:25:37,807 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.0) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2025-03-04 09:25:37,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:25:37,809 INFO L225 Difference]: With dead ends: 1209 [2025-03-04 09:25:37,809 INFO L226 Difference]: Without dead ends: 1209 [2025-03-04 09:25:37,809 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-04 09:25:37,809 INFO L435 NwaCegarLoop]: 1021 mSDtfsCounter, 1 mSDsluCounter, 1641 mSDsCounter, 0 mSdLazyCounter, 1426 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2662 SdHoareTripleChecker+Invalid, 1427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-03-04 09:25:37,809 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2662 Invalid, 1427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1426 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-03-04 09:25:37,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1209 states. [2025-03-04 09:25:37,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1209 to 1209. [2025-03-04 09:25:37,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1209 states, 791 states have (on average 1.7281921618204803) internal successors, (1367), 1203 states have internal predecessors, (1367), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 09:25:37,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1209 states to 1209 states and 1375 transitions. [2025-03-04 09:25:37,817 INFO L78 Accepts]: Start accepts. Automaton has 1209 states and 1375 transitions. Word has length 64 [2025-03-04 09:25:37,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:25:37,817 INFO L471 AbstractCegarLoop]: Abstraction has 1209 states and 1375 transitions. [2025-03-04 09:25:37,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.0) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:25:37,817 INFO L276 IsEmpty]: Start isEmpty. Operand 1209 states and 1375 transitions. [2025-03-04 09:25:37,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2025-03-04 09:25:37,818 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:25:37,818 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:25:37,828 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2025-03-04 09:25:38,018 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 09:25:38,019 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr519REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-04 09:25:38,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:25:38,019 INFO L85 PathProgramCache]: Analyzing trace with hash 926115777, now seen corresponding path program 1 times [2025-03-04 09:25:38,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:25:38,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1396109001] [2025-03-04 09:25:38,019 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:25:38,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:25:38,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:25:38,021 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 09:25:38,022 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 09:25:38,150 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 72 statements into 1 equivalence classes. [2025-03-04 09:25:38,209 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 72 of 72 statements. [2025-03-04 09:25:38,209 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:25:38,209 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:25:38,218 INFO L256 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-04 09:25:38,220 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:25:38,224 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 09:25:38,266 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 09:25:38,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:25:38,276 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:25:38,276 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:25:38,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396109001] [2025-03-04 09:25:38,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1396109001] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:25:38,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:25:38,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-04 09:25:38,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848147122] [2025-03-04 09:25:38,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:25:38,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-04 09:25:38,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:25:38,277 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-04 09:25:38,277 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-04 09:25:38,278 INFO L87 Difference]: Start difference. First operand 1209 states and 1375 transitions. Second operand has 7 states, 5 states have (on average 14.0) internal successors, (70), 6 states have internal predecessors, (70), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 09:25:40,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:25:40,284 INFO L93 Difference]: Finished difference Result 1221 states and 1390 transitions. [2025-03-04 09:25:40,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-04 09:25:40,285 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 14.0) internal successors, (70), 6 states have internal predecessors, (70), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 72 [2025-03-04 09:25:40,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:25:40,288 INFO L225 Difference]: With dead ends: 1221 [2025-03-04 09:25:40,288 INFO L226 Difference]: Without dead ends: 1221 [2025-03-04 09:25:40,288 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2025-03-04 09:25:40,288 INFO L435 NwaCegarLoop]: 1011 mSDtfsCounter, 8 mSDsluCounter, 3206 mSDsCounter, 0 mSdLazyCounter, 1915 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 4217 SdHoareTripleChecker+Invalid, 1921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-03-04 09:25:40,288 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 4217 Invalid, 1921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1915 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-03-04 09:25:40,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1221 states. [2025-03-04 09:25:40,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1221 to 1215. [2025-03-04 09:25:40,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1215 states, 796 states have (on average 1.7261306532663316) internal successors, (1374), 1208 states have internal predecessors, (1374), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2025-03-04 09:25:40,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 1385 transitions. [2025-03-04 09:25:40,298 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 1385 transitions. Word has length 72 [2025-03-04 09:25:40,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:25:40,298 INFO L471 AbstractCegarLoop]: Abstraction has 1215 states and 1385 transitions. [2025-03-04 09:25:40,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 14.0) internal successors, (70), 6 states have internal predecessors, (70), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 09:25:40,299 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 1385 transitions. [2025-03-04 09:25:40,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2025-03-04 09:25:40,299 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:25:40,299 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:25:40,312 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 09:25:40,499 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 09:25:40,499 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr520REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-04 09:25:40,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:25:40,500 INFO L85 PathProgramCache]: Analyzing trace with hash 926115778, now seen corresponding path program 1 times [2025-03-04 09:25:40,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:25:40,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2078099014] [2025-03-04 09:25:40,500 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:25:40,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:25:40,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:25:40,502 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 09:25:40,503 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 09:25:40,633 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 72 statements into 1 equivalence classes. [2025-03-04 09:25:40,695 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 72 of 72 statements. [2025-03-04 09:25:40,695 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:25:40,695 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:25:40,704 INFO L256 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:25:40,706 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:25:40,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:25:40,719 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:25:40,719 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:25:40,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078099014] [2025-03-04 09:25:40,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078099014] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:25:40,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:25:40,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:25:40,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756955004] [2025-03-04 09:25:40,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:25:40,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:25:40,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:25:40,720 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:25:40,720 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:25:40,720 INFO L87 Difference]: Start difference. First operand 1215 states and 1385 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 09:25:40,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:25:40,748 INFO L93 Difference]: Finished difference Result 1212 states and 1379 transitions. [2025-03-04 09:25:40,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:25:40,749 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 72 [2025-03-04 09:25:40,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:25:40,752 INFO L225 Difference]: With dead ends: 1212 [2025-03-04 09:25:40,752 INFO L226 Difference]: Without dead ends: 1212 [2025-03-04 09:25:40,752 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:25:40,753 INFO L435 NwaCegarLoop]: 1021 mSDtfsCounter, 0 mSDsluCounter, 2037 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3058 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 09:25:40,753 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3058 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 09:25:40,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1212 states. [2025-03-04 09:25:40,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1212 to 1212. [2025-03-04 09:25:40,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1212 states, 793 states have (on average 1.7276166456494326) internal successors, (1370), 1206 states have internal predecessors, (1370), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-03-04 09:25:40,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1212 states to 1212 states and 1379 transitions. [2025-03-04 09:25:40,777 INFO L78 Accepts]: Start accepts. Automaton has 1212 states and 1379 transitions. Word has length 72 [2025-03-04 09:25:40,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:25:40,777 INFO L471 AbstractCegarLoop]: Abstraction has 1212 states and 1379 transitions. [2025-03-04 09:25:40,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 09:25:40,777 INFO L276 IsEmpty]: Start isEmpty. Operand 1212 states and 1379 transitions. [2025-03-04 09:25:40,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2025-03-04 09:25:40,777 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:25:40,781 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:25:40,791 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-03-04 09:25:40,982 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 09:25:40,982 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr519REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-04 09:25:40,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:25:40,982 INFO L85 PathProgramCache]: Analyzing trace with hash 696914376, now seen corresponding path program 1 times [2025-03-04 09:25:40,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:25:40,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1070812913] [2025-03-04 09:25:40,983 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:25:40,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:25:40,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:25:40,984 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 09:25:40,985 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 09:25:41,112 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 73 statements into 1 equivalence classes. [2025-03-04 09:25:41,180 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 73 of 73 statements. [2025-03-04 09:25:41,180 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:25:41,180 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:25:41,188 INFO L256 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 09:25:41,190 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:25:41,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:25:41,206 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:25:41,246 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:25:41,246 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:25:41,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070812913] [2025-03-04 09:25:41,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070812913] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 09:25:41,246 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 09:25:41,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2025-03-04 09:25:41,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099596040] [2025-03-04 09:25:41,247 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 09:25:41,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-04 09:25:41,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:25:41,247 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-04 09:25:41,247 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-03-04 09:25:41,248 INFO L87 Difference]: Start difference. First operand 1212 states and 1379 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-04 09:25:41,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:25:41,331 INFO L93 Difference]: Finished difference Result 1224 states and 1396 transitions. [2025-03-04 09:25:41,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-04 09:25:41,332 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 73 [2025-03-04 09:25:41,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:25:41,333 INFO L225 Difference]: With dead ends: 1224 [2025-03-04 09:25:41,333 INFO L226 Difference]: Without dead ends: 1224 [2025-03-04 09:25:41,334 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2025-03-04 09:25:41,334 INFO L435 NwaCegarLoop]: 1021 mSDtfsCounter, 5 mSDsluCounter, 3054 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 4075 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 09:25:41,334 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 4075 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 09:25:41,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2025-03-04 09:25:41,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 1222. [2025-03-04 09:25:41,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1222 states, 802 states have (on average 1.726932668329177) internal successors, (1385), 1215 states have internal predecessors, (1385), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-03-04 09:25:41,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 1394 transitions. [2025-03-04 09:25:41,343 INFO L78 Accepts]: Start accepts. Automaton has 1222 states and 1394 transitions. Word has length 73 [2025-03-04 09:25:41,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:25:41,344 INFO L471 AbstractCegarLoop]: Abstraction has 1222 states and 1394 transitions. [2025-03-04 09:25:41,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-04 09:25:41,344 INFO L276 IsEmpty]: Start isEmpty. Operand 1222 states and 1394 transitions. [2025-03-04 09:25:41,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2025-03-04 09:25:41,344 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:25:41,344 INFO L218 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:25:41,354 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 09:25:41,544 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 09:25:41,545 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr519REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-04 09:25:41,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:25:41,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1821454721, now seen corresponding path program 2 times [2025-03-04 09:25:41,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:25:41,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1681757852] [2025-03-04 09:25:41,546 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 09:25:41,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:25:41,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:25:41,547 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 09:25:41,548 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 09:25:41,684 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 76 statements into 2 equivalence classes. [2025-03-04 09:26:17,652 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 76 of 76 statements. [2025-03-04 09:26:17,653 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 09:26:17,653 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:26:17,672 INFO L256 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-03-04 09:26:17,674 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:26:17,731 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-04 09:26:17,731 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-03-04 09:26:17,745 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-04 09:26:17,853 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:26:17,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2025-03-04 09:26:17,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2025-03-04 09:26:17,901 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-04 09:26:17,901 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:26:17,956 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2025-03-04 09:26:17,957 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2025-03-04 09:26:17,983 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:26:17,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681757852] [2025-03-04 09:26:17,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681757852] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 09:26:17,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [198499991] [2025-03-04 09:26:17,983 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 09:26:17,983 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-03-04 09:26:17,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2025-03-04 09:26:17,987 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-03-04 09:26:17,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2025-03-04 09:26:18,178 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 76 statements into 2 equivalence classes. [2025-03-04 09:26:18,914 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 76 of 76 statements. [2025-03-04 09:26:18,915 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 09:26:18,915 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:26:18,937 INFO L256 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-04 09:26:18,938 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:26:19,024 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:26:19,024 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:26:19,205 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:26:19,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [198499991] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 09:26:19,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 09:26:19,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 24 [2025-03-04 09:26:19,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044881938] [2025-03-04 09:26:19,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 09:26:19,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-04 09:26:19,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:26:19,206 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-04 09:26:19,206 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=553, Unknown=6, NotChecked=0, Total=650 [2025-03-04 09:26:19,206 INFO L87 Difference]: Start difference. First operand 1222 states and 1394 transitions. Second operand has 24 states, 23 states have (on average 6.043478260869565) internal successors, (139), 23 states have internal predecessors, (139), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-04 09:26:24,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:26:24,574 INFO L93 Difference]: Finished difference Result 1624 states and 1920 transitions. [2025-03-04 09:26:24,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-03-04 09:26:24,575 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 6.043478260869565) internal successors, (139), 23 states have internal predecessors, (139), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 76 [2025-03-04 09:26:24,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:26:24,577 INFO L225 Difference]: With dead ends: 1624 [2025-03-04 09:26:24,577 INFO L226 Difference]: Without dead ends: 1620 [2025-03-04 09:26:24,577 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 488 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=416, Invalid=2333, Unknown=7, NotChecked=0, Total=2756 [2025-03-04 09:26:24,578 INFO L435 NwaCegarLoop]: 657 mSDtfsCounter, 790 mSDsluCounter, 7596 mSDsCounter, 0 mSdLazyCounter, 5971 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 8253 SdHoareTripleChecker+Invalid, 5993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 5971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2025-03-04 09:26:24,579 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [794 Valid, 8253 Invalid, 5993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 5971 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2025-03-04 09:26:24,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1620 states. [2025-03-04 09:26:24,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1620 to 1230. [2025-03-04 09:26:24,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1230 states, 811 states have (on average 1.721331689272503) internal successors, (1396), 1223 states have internal predecessors, (1396), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-03-04 09:26:24,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1230 states to 1230 states and 1405 transitions. [2025-03-04 09:26:24,589 INFO L78 Accepts]: Start accepts. Automaton has 1230 states and 1405 transitions. Word has length 76 [2025-03-04 09:26:24,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:26:24,589 INFO L471 AbstractCegarLoop]: Abstraction has 1230 states and 1405 transitions. [2025-03-04 09:26:24,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 6.043478260869565) internal successors, (139), 23 states have internal predecessors, (139), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-04 09:26:24,589 INFO L276 IsEmpty]: Start isEmpty. Operand 1230 states and 1405 transitions. [2025-03-04 09:26:24,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2025-03-04 09:26:24,590 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:26:24,590 INFO L218 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:26:24,598 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (24)] Ended with exit code 0 [2025-03-04 09:26:24,818 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2025-03-04 09:26:24,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:26:24,991 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr520REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-04 09:26:24,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:26:24,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1139440674, now seen corresponding path program 1 times [2025-03-04 09:26:24,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:26:24,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1885533932] [2025-03-04 09:26:24,991 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:26:24,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:26:24,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:26:24,993 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:26:24,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-03-04 09:26:25,135 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 82 statements into 1 equivalence classes. [2025-03-04 09:26:25,209 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 82 of 82 statements. [2025-03-04 09:26:25,210 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:26:25,210 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:26:25,220 INFO L256 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-04 09:26:25,221 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:26:25,313 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:26:25,313 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:26:25,667 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:26:25,667 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:26:25,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885533932] [2025-03-04 09:26:25,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885533932] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 09:26:25,667 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 09:26:25,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2025-03-04 09:26:25,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564214566] [2025-03-04 09:26:25,667 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 09:26:25,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-03-04 09:26:25,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:26:25,668 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-03-04 09:26:25,668 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2025-03-04 09:26:25,668 INFO L87 Difference]: Start difference. First operand 1230 states and 1405 transitions. Second operand has 26 states, 26 states have (on average 3.576923076923077) internal successors, (93), 26 states have internal predecessors, (93), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-04 09:26:26,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:26:26,674 INFO L93 Difference]: Finished difference Result 1254 states and 1444 transitions. [2025-03-04 09:26:26,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-03-04 09:26:26,674 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.576923076923077) internal successors, (93), 26 states have internal predecessors, (93), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 82 [2025-03-04 09:26:26,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:26:26,676 INFO L225 Difference]: With dead ends: 1254 [2025-03-04 09:26:26,676 INFO L226 Difference]: Without dead ends: 1248 [2025-03-04 09:26:26,677 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=728, Invalid=1434, Unknown=0, NotChecked=0, Total=2162 [2025-03-04 09:26:26,677 INFO L435 NwaCegarLoop]: 1021 mSDtfsCounter, 19 mSDsluCounter, 11199 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 12220 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-04 09:26:26,677 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 12220 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-04 09:26:26,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1248 states. [2025-03-04 09:26:26,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1248 to 1248. [2025-03-04 09:26:26,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1248 states, 829 states have (on average 1.7117008443908324) internal successors, (1419), 1241 states have internal predecessors, (1419), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-03-04 09:26:26,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1248 states to 1248 states and 1428 transitions. [2025-03-04 09:26:26,686 INFO L78 Accepts]: Start accepts. Automaton has 1248 states and 1428 transitions. Word has length 82 [2025-03-04 09:26:26,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:26:26,686 INFO L471 AbstractCegarLoop]: Abstraction has 1248 states and 1428 transitions. [2025-03-04 09:26:26,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.576923076923077) internal successors, (93), 26 states have internal predecessors, (93), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-04 09:26:26,686 INFO L276 IsEmpty]: Start isEmpty. Operand 1248 states and 1428 transitions. [2025-03-04 09:26:26,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2025-03-04 09:26:26,686 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:26:26,686 INFO L218 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:26:26,697 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2025-03-04 09:26:26,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:26:26,887 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr520REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2025-03-04 09:26:26,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:26:26,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1658345118, now seen corresponding path program 2 times [2025-03-04 09:26:26,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:26:26,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1865953775] [2025-03-04 09:26:26,888 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 09:26:26,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:26:26,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:26:26,889 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:26:26,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-03-04 09:26:27,052 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 94 statements into 2 equivalence classes.