./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test4-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test4-3.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 87dd09ebbd7004650762949ef44f5f810b259dfe76e04f61193dc727167eb435 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 09:22:20,754 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 09:22:20,811 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-04 09:22:20,816 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 09:22:20,816 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 09:22:20,835 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 09:22:20,836 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 09:22:20,836 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 09:22:20,836 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 09:22:20,836 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 09:22:20,836 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 09:22:20,836 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 09:22:20,836 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 09:22:20,837 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 09:22:20,837 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 09:22:20,838 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 09:22:20,838 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 09:22:20,838 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 09:22:20,838 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 09:22:20,838 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 09:22:20,838 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-04 09:22:20,838 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-04 09:22:20,838 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-04 09:22:20,838 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 09:22:20,838 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-04 09:22:20,838 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 09:22:20,838 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 09:22:20,839 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 09:22:20,839 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 09:22:20,839 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 09:22:20,839 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 09:22:20,839 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 09:22:20,839 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 09:22:20,839 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 09:22:20,840 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 09:22:20,840 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 09:22:20,840 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 09:22:20,840 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 09:22:20,840 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 09:22:20,840 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 09:22:20,840 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 09:22:20,840 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 09:22:20,840 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 -> 87dd09ebbd7004650762949ef44f5f810b259dfe76e04f61193dc727167eb435 [2025-03-04 09:22:21,058 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 09:22:21,066 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 09:22:21,069 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 09:22:21,070 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 09:22:21,070 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 09:22:21,071 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test4-3.i [2025-03-04 09:22:22,213 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7a2be50d/b7fede72d83b49d78089a0c3a18a52d3/FLAG607b14321 [2025-03-04 09:22:22,573 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 09:22:22,574 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test4-3.i [2025-03-04 09:22:22,593 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7a2be50d/b7fede72d83b49d78089a0c3a18a52d3/FLAG607b14321 [2025-03-04 09:22:22,810 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7a2be50d/b7fede72d83b49d78089a0c3a18a52d3 [2025-03-04 09:22:22,812 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 09:22:22,813 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 09:22:22,815 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 09:22:22,815 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 09:22:22,819 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 09:22:22,820 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:22:22" (1/1) ... [2025-03-04 09:22:22,821 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f65a6f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:22:22, skipping insertion in model container [2025-03-04 09:22:22,822 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:22:22" (1/1) ... [2025-03-04 09:22:22,857 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 09:22:23,098 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:22:23,122 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:22:23,127 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:22:23,132 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:22:23,141 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 09:22:23,164 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:22:23,165 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:22:23,167 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:22:23,171 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:22:23,177 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:22:23,178 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:22:23,180 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:22:23,181 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:22:23,182 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:22:23,182 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:22:23,185 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:22:23,186 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:22:23,186 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:22:23,186 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:22:23,188 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:22:23,195 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:22:23,205 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 09:22:23,205 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@74cfea6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:22:23, skipping insertion in model container [2025-03-04 09:22:23,205 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 09:22:23,205 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-03-04 09:22:23,207 INFO L158 Benchmark]: Toolchain (without parser) took 392.91ms. Allocated memory is still 142.6MB. Free memory was 104.0MB in the beginning and 82.8MB in the end (delta: 21.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-04 09:22:23,207 INFO L158 Benchmark]: CDTParser took 0.56ms. Allocated memory is still 201.3MB. Free memory is still 126.8MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 09:22:23,207 INFO L158 Benchmark]: CACSL2BoogieTranslator took 390.21ms. Allocated memory is still 142.6MB. Free memory was 104.0MB in the beginning and 82.8MB in the end (delta: 21.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-04 09:22:23,208 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.56ms. Allocated memory is still 201.3MB. Free memory is still 126.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 390.21ms. Allocated memory is still 142.6MB. Free memory was 104.0MB in the beginning and 82.8MB in the end (delta: 21.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 757]: 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_nondet_test4-3.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 87dd09ebbd7004650762949ef44f5f810b259dfe76e04f61193dc727167eb435 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 09:22:24,817 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 09:22:24,900 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-03-04 09:22:24,907 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 09:22:24,911 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 09:22:24,930 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 09:22:24,931 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 09:22:24,931 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 09:22:24,932 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 09:22:24,932 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 09:22:24,933 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 09:22:24,933 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 09:22:24,933 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 09:22:24,933 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 09:22:24,933 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 09:22:24,933 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 09:22:24,934 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 09:22:24,934 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 09:22:24,934 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 09:22:24,934 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 09:22:24,934 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-04 09:22:24,934 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-04 09:22:24,934 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-04 09:22:24,934 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 09:22:24,934 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-04 09:22:24,935 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-04 09:22:24,935 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-04 09:22:24,935 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 09:22:24,935 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 09:22:24,935 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 09:22:24,935 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 09:22:24,935 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 09:22:24,935 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 09:22:24,935 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 09:22:24,936 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 09:22:24,936 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 09:22:24,936 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 09:22:24,936 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 09:22:24,936 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-04 09:22:24,936 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-04 09:22:24,936 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 09:22:24,936 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 09:22:24,936 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 09:22:24,936 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 09:22:24,937 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 -> 87dd09ebbd7004650762949ef44f5f810b259dfe76e04f61193dc727167eb435 [2025-03-04 09:22:25,152 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 09:22:25,160 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 09:22:25,161 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 09:22:25,162 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 09:22:25,162 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 09:22:25,163 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test4-3.i [2025-03-04 09:22:26,325 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/819d7e4a2/69fc13f9b0e24d249a5f4d7ee9685144/FLAGe5bb91047 [2025-03-04 09:22:26,598 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 09:22:26,601 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test4-3.i [2025-03-04 09:22:26,617 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/819d7e4a2/69fc13f9b0e24d249a5f4d7ee9685144/FLAGe5bb91047 [2025-03-04 09:22:26,633 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/819d7e4a2/69fc13f9b0e24d249a5f4d7ee9685144 [2025-03-04 09:22:26,635 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 09:22:26,637 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 09:22:26,638 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 09:22:26,639 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 09:22:26,642 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 09:22:26,642 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:22:26" (1/1) ... [2025-03-04 09:22:26,643 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f247e2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:22:26, skipping insertion in model container [2025-03-04 09:22:26,644 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:22:26" (1/1) ... [2025-03-04 09:22:26,678 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 09:22:27,016 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:22:27,045 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:22:27,050 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:22:27,053 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:22:27,061 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:22:27,082 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:22:27,086 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:22:27,090 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:22:27,093 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:22:27,117 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:22:27,118 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:22:27,121 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:22:27,122 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:22:27,123 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:22:27,123 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:22:27,128 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:22:27,128 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:22:27,129 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 09:22:27,130 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:22:27,132 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:22:27,138 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:22:27,150 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-03-04 09:22:27,160 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 09:22:27,181 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:22:27,192 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:22:27,197 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:22:27,200 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:22:27,204 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:22:27,225 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:22:27,226 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 09:22:27,227 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:22:27,232 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:22:27,238 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:22:27,239 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:22:27,240 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 09:22:27,242 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 09:22:27,243 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 09:22:27,243 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 09:22:27,246 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 09:22:27,248 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 09:22:27,248 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 09:22:27,248 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 09:22:27,250 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 09:22:27,254 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:22:27,260 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 09:22:27,356 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:22:27,385 INFO L204 MainTranslator]: Completed translation [2025-03-04 09:22:27,385 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:22:27 WrapperNode [2025-03-04 09:22:27,385 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 09:22:27,386 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 09:22:27,386 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 09:22:27,386 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 09:22:27,390 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:22:27" (1/1) ... [2025-03-04 09:22:27,420 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:22:27" (1/1) ... [2025-03-04 09:22:27,459 INFO L138 Inliner]: procedures = 179, calls = 425, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1401 [2025-03-04 09:22:27,459 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 09:22:27,460 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 09:22:27,460 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 09:22:27,460 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 09:22:27,466 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:22:27" (1/1) ... [2025-03-04 09:22:27,466 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:22:27" (1/1) ... [2025-03-04 09:22:27,472 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:22:27" (1/1) ... [2025-03-04 09:22:27,571 INFO L175 MemorySlicer]: Split 403 memory accesses to 2 slices as follows [2, 401]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 98 writes are split as follows [0, 98]. [2025-03-04 09:22:27,571 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:22:27" (1/1) ... [2025-03-04 09:22:27,571 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:22:27" (1/1) ... [2025-03-04 09:22:27,636 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:22:27" (1/1) ... [2025-03-04 09:22:27,642 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:22:27" (1/1) ... [2025-03-04 09:22:27,649 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:22:27" (1/1) ... [2025-03-04 09:22:27,655 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:22:27" (1/1) ... [2025-03-04 09:22:27,667 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 09:22:27,668 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 09:22:27,669 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 09:22:27,669 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 09:22:27,670 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:22:27" (1/1) ... [2025-03-04 09:22:27,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 09:22:27,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:22:27,692 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 09:22:27,694 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 09:22:27,712 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2025-03-04 09:22:27,712 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2025-03-04 09:22:27,713 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-03-04 09:22:27,713 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-03-04 09:22:27,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-03-04 09:22:27,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-03-04 09:22:27,714 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-03-04 09:22:27,714 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-03-04 09:22:27,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-04 09:22:27,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 09:22:27,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-04 09:22:27,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-04 09:22:27,714 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-04 09:22:27,714 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-04 09:22:27,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-04 09:22:27,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-03-04 09:22:27,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-03-04 09:22:27,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-04 09:22:27,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-03-04 09:22:27,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 09:22:27,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 09:22:27,909 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 09:22:27,911 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 09:22:31,536 INFO L? ?]: Removed 1737 outVars from TransFormulas that were not future-live. [2025-03-04 09:22:31,536 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 09:22:31,573 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 09:22:31,574 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 09:22:31,574 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 09:22:31 BoogieIcfgContainer [2025-03-04 09:22:31,574 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 09:22:31,576 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 09:22:31,576 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 09:22:31,579 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 09:22:31,579 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 09:22:26" (1/3) ... [2025-03-04 09:22:31,580 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b822b3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 09:22:31, skipping insertion in model container [2025-03-04 09:22:31,580 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:22:27" (2/3) ... [2025-03-04 09:22:31,580 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b822b3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 09:22:31, skipping insertion in model container [2025-03-04 09:22:31,580 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 09:22:31" (3/3) ... [2025-03-04 09:22:31,581 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_FNV_nondet_test4-3.i [2025-03-04 09:22:31,591 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 09:22:31,592 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_FNV_nondet_test4-3.i that has 3 procedures, 1606 locations, 1 initial locations, 43 loop locations, and 831 error locations. [2025-03-04 09:22:31,648 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 09:22:31,658 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;@1943523d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 09:22:31,660 INFO L334 AbstractCegarLoop]: Starting to check reachability of 831 error locations. [2025-03-04 09:22:31,668 INFO L276 IsEmpty]: Start isEmpty. Operand has 1601 states, 768 states have (on average 2.2682291666666665) internal successors, (1742), 1593 states have internal predecessors, (1742), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-03-04 09:22:31,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-03-04 09:22:31,672 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:22:31,673 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-03-04 09:22:31,673 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-03-04 09:22:31,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:22:31,678 INFO L85 PathProgramCache]: Analyzing trace with hash 54946612, now seen corresponding path program 1 times [2025-03-04 09:22:31,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:22:31,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1923606255] [2025-03-04 09:22:31,690 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:22:31,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:22:31,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:22:31,695 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 09:22:31,708 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 09:22:31,840 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-04 09:22:31,848 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-04 09:22:31,848 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:22:31,848 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:22:31,850 INFO L256 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-04 09:22:31,853 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:22:31,871 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 09:22:31,872 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:22:31,873 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:22:31,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923606255] [2025-03-04 09:22:31,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923606255] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:22:31,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:22:31,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 09:22:31,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415548941] [2025-03-04 09:22:31,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:22:31,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:22:31,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:22:31,893 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:22:31,893 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:22:31,897 INFO L87 Difference]: Start difference. First operand has 1601 states, 768 states have (on average 2.2682291666666665) internal successors, (1742), 1593 states have internal predecessors, (1742), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:22:33,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:22:33,720 INFO L93 Difference]: Finished difference Result 1959 states and 2054 transitions. [2025-03-04 09:22:33,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:22:33,723 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2025-03-04 09:22:33,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:22:33,735 INFO L225 Difference]: With dead ends: 1959 [2025-03-04 09:22:33,736 INFO L226 Difference]: Without dead ends: 1956 [2025-03-04 09:22:33,737 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:22:33,738 INFO L435 NwaCegarLoop]: 1647 mSDtfsCounter, 394 mSDsluCounter, 836 mSDsCounter, 0 mSdLazyCounter, 1015 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 2483 SdHoareTripleChecker+Invalid, 1015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-03-04 09:22:33,739 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [394 Valid, 2483 Invalid, 1015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1015 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-03-04 09:22:33,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1956 states. [2025-03-04 09:22:33,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1956 to 1597. [2025-03-04 09:22:33,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1597 states, 775 states have (on average 2.1561290322580646) internal successors, (1671), 1589 states have internal predecessors, (1671), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-03-04 09:22:33,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1597 states to 1597 states and 1683 transitions. [2025-03-04 09:22:33,808 INFO L78 Accepts]: Start accepts. Automaton has 1597 states and 1683 transitions. Word has length 4 [2025-03-04 09:22:33,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:22:33,808 INFO L471 AbstractCegarLoop]: Abstraction has 1597 states and 1683 transitions. [2025-03-04 09:22:33,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:22:33,809 INFO L276 IsEmpty]: Start isEmpty. Operand 1597 states and 1683 transitions. [2025-03-04 09:22:33,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-03-04 09:22:33,809 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:22:33,809 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-04 09:22:33,816 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 09:22:34,009 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 09:22:34,010 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr829REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-03-04 09:22:34,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:22:34,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1265871320, now seen corresponding path program 1 times [2025-03-04 09:22:34,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:22:34,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1142492706] [2025-03-04 09:22:34,011 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:22:34,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:22:34,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:22:34,012 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 09:22:34,020 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 09:22:34,127 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-04 09:22:34,130 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-04 09:22:34,130 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:22:34,130 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:22:34,131 INFO L256 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:22:34,133 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:22:34,153 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 09:22:34,160 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 09:22:34,161 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:22:34,161 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:22:34,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142492706] [2025-03-04 09:22:34,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142492706] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:22:34,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:22:34,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 09:22:34,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921962851] [2025-03-04 09:22:34,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:22:34,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:22:34,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:22:34,162 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:22:34,162 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:22:34,162 INFO L87 Difference]: Start difference. First operand 1597 states and 1683 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 09:22:35,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:22:35,672 INFO L93 Difference]: Finished difference Result 1503 states and 1587 transitions. [2025-03-04 09:22:35,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:22:35,673 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2025-03-04 09:22:35,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:22:35,677 INFO L225 Difference]: With dead ends: 1503 [2025-03-04 09:22:35,677 INFO L226 Difference]: Without dead ends: 1503 [2025-03-04 09:22:35,678 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 09:22:35,679 INFO L435 NwaCegarLoop]: 947 mSDtfsCounter, 1022 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 935 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1028 SdHoareTripleChecker+Valid, 1147 SdHoareTripleChecker+Invalid, 1037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-03-04 09:22:35,679 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1028 Valid, 1147 Invalid, 1037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 935 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-03-04 09:22:35,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1503 states. [2025-03-04 09:22:35,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1503 to 1503. [2025-03-04 09:22:35,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1503 states, 775 states have (on average 2.032258064516129) internal successors, (1575), 1495 states have internal predecessors, (1575), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-03-04 09:22:35,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1503 states to 1503 states and 1587 transitions. [2025-03-04 09:22:35,706 INFO L78 Accepts]: Start accepts. Automaton has 1503 states and 1587 transitions. Word has length 6 [2025-03-04 09:22:35,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:22:35,706 INFO L471 AbstractCegarLoop]: Abstraction has 1503 states and 1587 transitions. [2025-03-04 09:22:35,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 09:22:35,707 INFO L276 IsEmpty]: Start isEmpty. Operand 1503 states and 1587 transitions. [2025-03-04 09:22:35,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-03-04 09:22:35,707 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:22:35,707 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-04 09:22:35,717 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 09:22:35,907 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 09:22:35,908 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr830REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-03-04 09:22:35,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:22:35,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1265871321, now seen corresponding path program 1 times [2025-03-04 09:22:35,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:22:35,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1103751621] [2025-03-04 09:22:35,909 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:22:35,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:22:35,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:22:35,911 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 09:22:35,912 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 09:22:36,006 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-04 09:22:36,010 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-04 09:22:36,010 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:22:36,010 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:22:36,011 INFO L256 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 09:22:36,015 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:22:36,021 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 09:22:36,034 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 09:22:36,035 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:22:36,035 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:22:36,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103751621] [2025-03-04 09:22:36,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103751621] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:22:36,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:22:36,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 09:22:36,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092043294] [2025-03-04 09:22:36,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:22:36,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:22:36,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:22:36,036 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:22:36,036 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:22:36,036 INFO L87 Difference]: Start difference. First operand 1503 states and 1587 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 09:22:38,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:22:38,089 INFO L93 Difference]: Finished difference Result 1820 states and 1924 transitions. [2025-03-04 09:22:38,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:22:38,089 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2025-03-04 09:22:38,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:22:38,093 INFO L225 Difference]: With dead ends: 1820 [2025-03-04 09:22:38,094 INFO L226 Difference]: Without dead ends: 1820 [2025-03-04 09:22:38,094 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 09:22:38,094 INFO L435 NwaCegarLoop]: 1313 mSDtfsCounter, 517 mSDsluCounter, 638 mSDsCounter, 0 mSdLazyCounter, 973 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 517 SdHoareTripleChecker+Valid, 1951 SdHoareTripleChecker+Invalid, 998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-03-04 09:22:38,094 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [517 Valid, 1951 Invalid, 998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 973 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-03-04 09:22:38,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1820 states. [2025-03-04 09:22:38,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1820 to 1668. [2025-03-04 09:22:38,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1668 states, 950 states have (on average 1.9926315789473685) internal successors, (1893), 1660 states have internal predecessors, (1893), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-03-04 09:22:38,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1668 states to 1668 states and 1905 transitions. [2025-03-04 09:22:38,116 INFO L78 Accepts]: Start accepts. Automaton has 1668 states and 1905 transitions. Word has length 6 [2025-03-04 09:22:38,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:22:38,116 INFO L471 AbstractCegarLoop]: Abstraction has 1668 states and 1905 transitions. [2025-03-04 09:22:38,116 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 09:22:38,116 INFO L276 IsEmpty]: Start isEmpty. Operand 1668 states and 1905 transitions. [2025-03-04 09:22:38,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-03-04 09:22:38,116 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:22:38,116 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-04 09:22:38,123 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 09:22:38,317 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 09:22:38,317 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr209REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-03-04 09:22:38,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:22:38,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1264584393, now seen corresponding path program 1 times [2025-03-04 09:22:38,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:22:38,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1965096313] [2025-03-04 09:22:38,318 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:22:38,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:22:38,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:22:38,320 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 09:22:38,321 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 09:22:38,421 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-04 09:22:38,423 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-04 09:22:38,424 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:22:38,424 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:22:38,424 INFO L256 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-04 09:22:38,425 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:22:38,454 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 09:22:38,456 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:22:38,456 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:22:38,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965096313] [2025-03-04 09:22:38,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965096313] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:22:38,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:22:38,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:22:38,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229487315] [2025-03-04 09:22:38,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:22:38,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:22:38,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:22:38,457 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:22:38,457 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:22:38,457 INFO L87 Difference]: Start difference. First operand 1668 states and 1905 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 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 09:22:38,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:22:38,917 INFO L93 Difference]: Finished difference Result 2430 states and 2793 transitions. [2025-03-04 09:22:38,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:22:38,920 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2025-03-04 09:22:38,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:22:38,925 INFO L225 Difference]: With dead ends: 2430 [2025-03-04 09:22:38,925 INFO L226 Difference]: Without dead ends: 2430 [2025-03-04 09:22:38,926 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 09:22:38,926 INFO L435 NwaCegarLoop]: 1546 mSDtfsCounter, 686 mSDsluCounter, 2847 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 4393 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-04 09:22:38,926 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [689 Valid, 4393 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-04 09:22:38,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2430 states. [2025-03-04 09:22:38,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2430 to 2131. [2025-03-04 09:22:38,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2131 states, 1413 states have (on average 1.9639065817409767) internal successors, (2775), 2120 states have internal predecessors, (2775), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-03-04 09:22:38,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2131 states to 2131 states and 2793 transitions. [2025-03-04 09:22:38,963 INFO L78 Accepts]: Start accepts. Automaton has 2131 states and 2793 transitions. Word has length 6 [2025-03-04 09:22:38,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:22:38,963 INFO L471 AbstractCegarLoop]: Abstraction has 2131 states and 2793 transitions. [2025-03-04 09:22:38,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 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 09:22:38,963 INFO L276 IsEmpty]: Start isEmpty. Operand 2131 states and 2793 transitions. [2025-03-04 09:22:38,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-03-04 09:22:38,963 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:22:38,963 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:22:38,971 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 09:22:39,164 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 09:22:39,164 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr202REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-03-04 09:22:39,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:22:39,165 INFO L85 PathProgramCache]: Analyzing trace with hash 547387165, now seen corresponding path program 1 times [2025-03-04 09:22:39,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:22:39,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [68341949] [2025-03-04 09:22:39,165 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:22:39,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:22:39,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:22:39,168 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 09:22:39,168 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 09:22:39,260 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-04 09:22:39,262 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-04 09:22:39,263 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:22:39,263 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:22:39,263 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:22:39,264 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:22:39,289 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 09:22:39,290 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:22:39,290 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:22:39,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68341949] [2025-03-04 09:22:39,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68341949] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:22:39,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:22:39,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:22:39,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261256789] [2025-03-04 09:22:39,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:22:39,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:22:39,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:22:39,290 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:22:39,290 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:22:39,290 INFO L87 Difference]: Start difference. First operand 2131 states and 2793 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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 09:22:39,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:22:39,444 INFO L93 Difference]: Finished difference Result 2388 states and 2922 transitions. [2025-03-04 09:22:39,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:22:39,445 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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 09:22:39,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:22:39,450 INFO L225 Difference]: With dead ends: 2388 [2025-03-04 09:22:39,450 INFO L226 Difference]: Without dead ends: 2388 [2025-03-04 09:22:39,450 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 09:22:39,452 INFO L435 NwaCegarLoop]: 1617 mSDtfsCounter, 500 mSDsluCounter, 1481 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 3098 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 09:22:39,452 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [500 Valid, 3098 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 09:22:39,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2388 states. [2025-03-04 09:22:39,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2388 to 1993. [2025-03-04 09:22:39,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1993 states, 1275 states have (on average 1.9749019607843137) internal successors, (2518), 1982 states have internal predecessors, (2518), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-03-04 09:22:39,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1993 states to 1993 states and 2536 transitions. [2025-03-04 09:22:39,479 INFO L78 Accepts]: Start accepts. Automaton has 1993 states and 2536 transitions. Word has length 7 [2025-03-04 09:22:39,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:22:39,479 INFO L471 AbstractCegarLoop]: Abstraction has 1993 states and 2536 transitions. [2025-03-04 09:22:39,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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 09:22:39,479 INFO L276 IsEmpty]: Start isEmpty. Operand 1993 states and 2536 transitions. [2025-03-04 09:22:39,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-03-04 09:22:39,480 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:22:39,480 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:22:39,486 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 09:22:39,680 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 09:22:39,680 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr201REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-03-04 09:22:39,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:22:39,681 INFO L85 PathProgramCache]: Analyzing trace with hash -780387289, now seen corresponding path program 1 times [2025-03-04 09:22:39,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:22:39,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2074353421] [2025-03-04 09:22:39,681 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:22:39,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:22:39,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:22:39,683 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 09:22:39,684 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 09:22:39,768 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-04 09:22:39,773 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-04 09:22:39,773 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:22:39,773 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:22:39,773 INFO L256 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-04 09:22:39,775 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:22:39,820 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 09:22:39,820 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:22:39,820 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:22:39,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074353421] [2025-03-04 09:22:39,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074353421] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:22:39,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:22:39,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:22:39,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656045735] [2025-03-04 09:22:39,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:22:39,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:22:39,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:22:39,821 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:22:39,821 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:22:39,821 INFO L87 Difference]: Start difference. First operand 1993 states and 2536 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:22:40,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:22:40,481 INFO L93 Difference]: Finished difference Result 2388 states and 2921 transitions. [2025-03-04 09:22:40,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:22:40,482 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-03-04 09:22:40,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:22:40,487 INFO L225 Difference]: With dead ends: 2388 [2025-03-04 09:22:40,487 INFO L226 Difference]: Without dead ends: 2384 [2025-03-04 09:22:40,487 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:22:40,487 INFO L435 NwaCegarLoop]: 1617 mSDtfsCounter, 502 mSDsluCounter, 2882 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 502 SdHoareTripleChecker+Valid, 4499 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-04 09:22:40,487 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [502 Valid, 4499 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-04 09:22:40,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2384 states. [2025-03-04 09:22:40,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2384 to 1989. [2025-03-04 09:22:40,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1989 states, 1271 states have (on average 1.977183320220299) internal successors, (2513), 1978 states have internal predecessors, (2513), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-03-04 09:22:40,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1989 states to 1989 states and 2531 transitions. [2025-03-04 09:22:40,513 INFO L78 Accepts]: Start accepts. Automaton has 1989 states and 2531 transitions. Word has length 10 [2025-03-04 09:22:40,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:22:40,513 INFO L471 AbstractCegarLoop]: Abstraction has 1989 states and 2531 transitions. [2025-03-04 09:22:40,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:22:40,514 INFO L276 IsEmpty]: Start isEmpty. Operand 1989 states and 2531 transitions. [2025-03-04 09:22:40,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-03-04 09:22:40,514 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:22:40,514 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:22:40,521 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-04 09:22:40,715 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 09:22:40,715 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr825REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-03-04 09:22:40,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:22:40,716 INFO L85 PathProgramCache]: Analyzing trace with hash 424147984, now seen corresponding path program 1 times [2025-03-04 09:22:40,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:22:40,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1046680881] [2025-03-04 09:22:40,716 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:22:40,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:22:40,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:22:40,718 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 09:22:40,719 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 09:22:40,815 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-04 09:22:40,830 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-04 09:22:40,830 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:22:40,830 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:22:40,833 INFO L256 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 09:22:40,835 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:22:40,839 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 09:22:40,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:22:40,860 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:22:40,860 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:22:40,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046680881] [2025-03-04 09:22:40,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046680881] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:22:40,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:22:40,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:22:40,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012890833] [2025-03-04 09:22:40,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:22:40,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:22:40,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:22:40,861 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:22:40,861 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:22:40,861 INFO L87 Difference]: Start difference. First operand 1989 states and 2531 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:22:42,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:22:42,790 INFO L93 Difference]: Finished difference Result 1974 states and 2493 transitions. [2025-03-04 09:22:42,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:22:42,791 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2025-03-04 09:22:42,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:22:42,795 INFO L225 Difference]: With dead ends: 1974 [2025-03-04 09:22:42,795 INFO L226 Difference]: Without dead ends: 1974 [2025-03-04 09:22:42,795 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:22:42,796 INFO L435 NwaCegarLoop]: 922 mSDtfsCounter, 1073 mSDsluCounter, 851 mSDsCounter, 0 mSdLazyCounter, 1718 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1079 SdHoareTripleChecker+Valid, 1773 SdHoareTripleChecker+Invalid, 1750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-03-04 09:22:42,796 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1079 Valid, 1773 Invalid, 1750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1718 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-03-04 09:22:42,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1974 states. [2025-03-04 09:22:42,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1974 to 1966. [2025-03-04 09:22:42,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1966 states, 1271 states have (on average 1.9409913453973249) internal successors, (2467), 1955 states have internal predecessors, (2467), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-03-04 09:22:42,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1966 states to 1966 states and 2485 transitions. [2025-03-04 09:22:42,818 INFO L78 Accepts]: Start accepts. Automaton has 1966 states and 2485 transitions. Word has length 11 [2025-03-04 09:22:42,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:22:42,818 INFO L471 AbstractCegarLoop]: Abstraction has 1966 states and 2485 transitions. [2025-03-04 09:22:42,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:22:42,819 INFO L276 IsEmpty]: Start isEmpty. Operand 1966 states and 2485 transitions. [2025-03-04 09:22:42,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-03-04 09:22:42,819 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:22:42,819 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:22:42,826 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 09:22:43,023 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 09:22:43,023 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr826REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-03-04 09:22:43,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:22:43,024 INFO L85 PathProgramCache]: Analyzing trace with hash 424147985, now seen corresponding path program 1 times [2025-03-04 09:22:43,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:22:43,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1394343659] [2025-03-04 09:22:43,024 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:22:43,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:22:43,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:22:43,030 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 09:22:43,032 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 09:22:43,142 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-04 09:22:43,159 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-04 09:22:43,159 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:22:43,159 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:22:43,162 INFO L256 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-04 09:22:43,164 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:22:43,169 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 09:22:43,218 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 09:22:43,218 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:22:43,218 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:22:43,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394343659] [2025-03-04 09:22:43,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394343659] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:22:43,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:22:43,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:22:43,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861224187] [2025-03-04 09:22:43,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:22:43,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:22:43,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:22:43,219 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:22:43,219 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:22:43,219 INFO L87 Difference]: Start difference. First operand 1966 states and 2485 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:22:45,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:22:45,805 INFO L93 Difference]: Finished difference Result 2248 states and 2658 transitions. [2025-03-04 09:22:45,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:22:45,805 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2025-03-04 09:22:45,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:22:45,810 INFO L225 Difference]: With dead ends: 2248 [2025-03-04 09:22:45,810 INFO L226 Difference]: Without dead ends: 2248 [2025-03-04 09:22:45,810 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:22:45,810 INFO L435 NwaCegarLoop]: 1595 mSDtfsCounter, 641 mSDsluCounter, 1540 mSDsCounter, 0 mSdLazyCounter, 1908 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 641 SdHoareTripleChecker+Valid, 3135 SdHoareTripleChecker+Invalid, 1930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-03-04 09:22:45,811 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [641 Valid, 3135 Invalid, 1930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1908 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-03-04 09:22:45,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2248 states. [2025-03-04 09:22:45,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2248 to 2080. [2025-03-04 09:22:45,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2080 states, 1385 states have (on average 1.8808664259927799) internal successors, (2605), 2069 states have internal predecessors, (2605), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-03-04 09:22:45,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2080 states to 2080 states and 2623 transitions. [2025-03-04 09:22:45,841 INFO L78 Accepts]: Start accepts. Automaton has 2080 states and 2623 transitions. Word has length 11 [2025-03-04 09:22:45,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:22:45,842 INFO L471 AbstractCegarLoop]: Abstraction has 2080 states and 2623 transitions. [2025-03-04 09:22:45,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:22:45,842 INFO L276 IsEmpty]: Start isEmpty. Operand 2080 states and 2623 transitions. [2025-03-04 09:22:45,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-03-04 09:22:45,843 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:22:45,843 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] [2025-03-04 09:22:45,851 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-03-04 09:22:46,043 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 09:22:46,044 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr826REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-03-04 09:22:46,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:22:46,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1443327396, now seen corresponding path program 1 times [2025-03-04 09:22:46,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:22:46,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1520050759] [2025-03-04 09:22:46,044 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:22:46,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:22:46,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:22:46,046 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 09:22:46,047 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 09:22:46,146 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-03-04 09:22:46,190 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-03-04 09:22:46,190 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:22:46,190 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:22:46,199 INFO L256 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-04 09:22:46,201 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:22:46,206 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 09:22:46,358 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 09:22:46,358 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:22:46,644 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 09:22:46,645 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:22:46,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520050759] [2025-03-04 09:22:46,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520050759] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 09:22:46,645 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 09:22:46,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2025-03-04 09:22:46,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096508104] [2025-03-04 09:22:46,645 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 09:22:46,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-04 09:22:46,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:22:46,645 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-04 09:22:46,645 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-04 09:22:46,646 INFO L87 Difference]: Start difference. First operand 2080 states and 2623 transitions. Second operand has 8 states, 7 states have (on average 8.142857142857142) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 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 09:22:54,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:22:54,987 INFO L93 Difference]: Finished difference Result 2635 states and 3188 transitions. [2025-03-04 09:22:54,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-04 09:22:54,988 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.142857142857142) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 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 30 [2025-03-04 09:22:54,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:22:54,994 INFO L225 Difference]: With dead ends: 2635 [2025-03-04 09:22:54,994 INFO L226 Difference]: Without dead ends: 2635 [2025-03-04 09:22:54,994 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 52 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 09:22:54,995 INFO L435 NwaCegarLoop]: 1636 mSDtfsCounter, 1991 mSDsluCounter, 4297 mSDsCounter, 0 mSdLazyCounter, 4925 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1993 SdHoareTripleChecker+Valid, 5933 SdHoareTripleChecker+Invalid, 4953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 4925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2025-03-04 09:22:54,995 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1993 Valid, 5933 Invalid, 4953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 4925 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2025-03-04 09:22:54,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2635 states. [2025-03-04 09:22:55,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2635 to 2244. [2025-03-04 09:22:55,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2244 states, 1549 states have (on average 1.8315041962556489) internal successors, (2837), 2233 states have internal predecessors, (2837), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-03-04 09:22:55,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2244 states to 2244 states and 2855 transitions. [2025-03-04 09:22:55,034 INFO L78 Accepts]: Start accepts. Automaton has 2244 states and 2855 transitions. Word has length 30 [2025-03-04 09:22:55,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:22:55,034 INFO L471 AbstractCegarLoop]: Abstraction has 2244 states and 2855 transitions. [2025-03-04 09:22:55,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.142857142857142) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 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 09:22:55,034 INFO L276 IsEmpty]: Start isEmpty. Operand 2244 states and 2855 transitions. [2025-03-04 09:22:55,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2025-03-04 09:22:55,037 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:22:55,037 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] [2025-03-04 09:22:55,047 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 09:22:55,242 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 09:22:55,242 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr744REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-03-04 09:22:55,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:22:55,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1648050360, now seen corresponding path program 1 times [2025-03-04 09:22:55,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:22:55,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1508080878] [2025-03-04 09:22:55,243 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:22:55,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:22:55,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:22:55,245 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 09:22:55,246 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 09:22:55,378 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-03-04 09:22:55,416 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-03-04 09:22:55,416 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:22:55,416 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:22:55,422 INFO L256 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:22:55,423 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:22:55,452 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 09:22:55,452 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:22:55,452 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:22:55,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508080878] [2025-03-04 09:22:55,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508080878] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:22:55,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:22:55,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:22:55,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078451872] [2025-03-04 09:22:55,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:22:55,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:22:55,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:22:55,453 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:22:55,453 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:22:55,454 INFO L87 Difference]: Start difference. First operand 2244 states and 2855 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 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 09:22:55,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:22:55,504 INFO L93 Difference]: Finished difference Result 1933 states and 2419 transitions. [2025-03-04 09:22:55,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 09:22:55,504 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2025-03-04 09:22:55,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:22:55,508 INFO L225 Difference]: With dead ends: 1933 [2025-03-04 09:22:55,508 INFO L226 Difference]: Without dead ends: 1933 [2025-03-04 09:22:55,508 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 42 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 09:22:55,509 INFO L435 NwaCegarLoop]: 1465 mSDtfsCounter, 56 mSDsluCounter, 2857 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 4322 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 09:22:55,509 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 4322 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 09:22:55,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1933 states. [2025-03-04 09:22:55,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1933 to 1931. [2025-03-04 09:22:55,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1931 states, 1259 states have (on average 1.9054805401111994) internal successors, (2399), 1920 states have internal predecessors, (2399), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-03-04 09:22:55,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1931 states to 1931 states and 2417 transitions. [2025-03-04 09:22:55,535 INFO L78 Accepts]: Start accepts. Automaton has 1931 states and 2417 transitions. Word has length 45 [2025-03-04 09:22:55,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:22:55,535 INFO L471 AbstractCegarLoop]: Abstraction has 1931 states and 2417 transitions. [2025-03-04 09:22:55,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 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 09:22:55,535 INFO L276 IsEmpty]: Start isEmpty. Operand 1931 states and 2417 transitions. [2025-03-04 09:22:55,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2025-03-04 09:22:55,537 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:22:55,537 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:22:55,547 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 09:22:55,738 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 09:22:55,738 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr744REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-03-04 09:22:55,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:22:55,739 INFO L85 PathProgramCache]: Analyzing trace with hash -435719824, now seen corresponding path program 1 times [2025-03-04 09:22:55,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:22:55,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [332128129] [2025-03-04 09:22:55,740 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:22:55,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:22:55,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:22:55,742 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 09:22:55,743 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 09:22:55,855 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 53 statements into 1 equivalence classes. [2025-03-04 09:22:55,910 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 53 of 53 statements. [2025-03-04 09:22:55,911 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:22:55,911 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:22:55,918 INFO L256 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-04 09:22:55,921 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:22:55,927 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 09:22:55,932 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 09:22:56,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-04 09:22:56,214 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 09:22:56,228 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-04 09:22:56,228 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 09:22:56,240 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 09:22:56,241 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:22:56,241 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:22:56,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332128129] [2025-03-04 09:22:56,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332128129] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:22:56,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:22:56,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:22:56,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848214141] [2025-03-04 09:22:56,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:22:56,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:22:56,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:22:56,241 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:22:56,241 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:22:56,241 INFO L87 Difference]: Start difference. First operand 1931 states and 2417 transitions. Second operand has 4 states, 3 states have (on average 17.666666666666668) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:22:57,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:22:57,797 INFO L93 Difference]: Finished difference Result 1847 states and 2292 transitions. [2025-03-04 09:22:57,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:22:57,798 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 17.666666666666668) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2025-03-04 09:22:57,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:22:57,802 INFO L225 Difference]: With dead ends: 1847 [2025-03-04 09:22:57,802 INFO L226 Difference]: Without dead ends: 1847 [2025-03-04 09:22:57,802 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 50 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 09:22:57,803 INFO L435 NwaCegarLoop]: 725 mSDtfsCounter, 1796 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 893 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1802 SdHoareTripleChecker+Valid, 942 SdHoareTripleChecker+Invalid, 995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-03-04 09:22:57,803 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1802 Valid, 942 Invalid, 995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 893 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-03-04 09:22:57,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1847 states. [2025-03-04 09:22:57,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1847 to 1672. [2025-03-04 09:22:57,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1672 states, 1084 states have (on average 1.7952029520295203) internal successors, (1946), 1661 states have internal predecessors, (1946), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-03-04 09:22:57,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1672 states to 1672 states and 1964 transitions. [2025-03-04 09:22:57,821 INFO L78 Accepts]: Start accepts. Automaton has 1672 states and 1964 transitions. Word has length 53 [2025-03-04 09:22:57,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:22:57,821 INFO L471 AbstractCegarLoop]: Abstraction has 1672 states and 1964 transitions. [2025-03-04 09:22:57,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 17.666666666666668) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:22:57,821 INFO L276 IsEmpty]: Start isEmpty. Operand 1672 states and 1964 transitions. [2025-03-04 09:22:57,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2025-03-04 09:22:57,823 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:22:57,823 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:22:57,833 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-03-04 09:22:58,023 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 09:22:58,024 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr737REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-03-04 09:22:58,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:22:58,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1394758388, now seen corresponding path program 1 times [2025-03-04 09:22:58,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:22:58,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1207348747] [2025-03-04 09:22:58,026 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:22:58,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:22:58,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:22:58,028 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 09:22:58,029 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 09:22:58,154 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-03-04 09:22:58,200 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-03-04 09:22:58,200 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:22:58,200 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:22:58,208 INFO L256 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-04 09:22:58,211 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:22:58,225 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 09:22:58,238 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 09:22:58,258 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 09:22:58,265 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 09:22:58,266 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:22:58,266 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:22:58,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207348747] [2025-03-04 09:22:58,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207348747] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:22:58,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:22:58,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:22:58,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238230340] [2025-03-04 09:22:58,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:22:58,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 09:22:58,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:22:58,268 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 09:22:58,268 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:22:58,268 INFO L87 Difference]: Start difference. First operand 1672 states and 1964 transitions. Second operand has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 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 09:23:00,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:23:00,219 INFO L93 Difference]: Finished difference Result 1671 states and 1962 transitions. [2025-03-04 09:23:00,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 09:23:00,219 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2025-03-04 09:23:00,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:23:00,223 INFO L225 Difference]: With dead ends: 1671 [2025-03-04 09:23:00,223 INFO L226 Difference]: Without dead ends: 1671 [2025-03-04 09:23:00,223 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 54 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 09:23:00,224 INFO L435 NwaCegarLoop]: 1391 mSDtfsCounter, 2 mSDsluCounter, 2091 mSDsCounter, 0 mSdLazyCounter, 2089 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3482 SdHoareTripleChecker+Invalid, 2090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-03-04 09:23:00,224 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3482 Invalid, 2090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2089 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-03-04 09:23:00,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1671 states. [2025-03-04 09:23:00,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1671 to 1671. [2025-03-04 09:23:00,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1671 states, 1084 states have (on average 1.7933579335793357) internal successors, (1944), 1660 states have internal predecessors, (1944), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-03-04 09:23:00,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1671 states to 1671 states and 1962 transitions. [2025-03-04 09:23:00,248 INFO L78 Accepts]: Start accepts. Automaton has 1671 states and 1962 transitions. Word has length 58 [2025-03-04 09:23:00,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:23:00,248 INFO L471 AbstractCegarLoop]: Abstraction has 1671 states and 1962 transitions. [2025-03-04 09:23:00,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 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 09:23:00,248 INFO L276 IsEmpty]: Start isEmpty. Operand 1671 states and 1962 transitions. [2025-03-04 09:23:00,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2025-03-04 09:23:00,249 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:23:00,249 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:23:00,259 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 09:23:00,449 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 09:23:00,450 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr738REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-03-04 09:23:00,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:23:00,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1394758387, now seen corresponding path program 1 times [2025-03-04 09:23:00,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:23:00,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1058642332] [2025-03-04 09:23:00,451 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:23:00,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:23:00,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:23:00,453 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 09:23:00,454 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 09:23:00,575 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-03-04 09:23:00,625 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-03-04 09:23:00,625 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:23:00,625 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:23:00,633 INFO L256 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-04 09:23:00,638 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:23:00,643 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 09:23:00,660 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 09:23:00,666 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 09:23:00,695 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 09:23:00,709 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 09:23:00,709 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:23:00,709 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:23:00,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058642332] [2025-03-04 09:23:00,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1058642332] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:23:00,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:23:00,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:23:00,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868372838] [2025-03-04 09:23:00,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:23:00,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 09:23:00,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:23:00,710 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 09:23:00,710 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:23:00,710 INFO L87 Difference]: Start difference. First operand 1671 states and 1962 transitions. Second operand has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 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 09:23:03,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:23:03,150 INFO L93 Difference]: Finished difference Result 1670 states and 1960 transitions. [2025-03-04 09:23:03,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 09:23:03,150 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2025-03-04 09:23:03,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:23:03,154 INFO L225 Difference]: With dead ends: 1670 [2025-03-04 09:23:03,154 INFO L226 Difference]: Without dead ends: 1670 [2025-03-04 09:23:03,155 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 54 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 09:23:03,155 INFO L435 NwaCegarLoop]: 1391 mSDtfsCounter, 1 mSDsluCounter, 2134 mSDsCounter, 0 mSdLazyCounter, 2043 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3525 SdHoareTripleChecker+Invalid, 2044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2025-03-04 09:23:03,155 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 3525 Invalid, 2044 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2043 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2025-03-04 09:23:03,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1670 states. [2025-03-04 09:23:03,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1670 to 1670. [2025-03-04 09:23:03,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1670 states, 1082 states have (on average 1.7948243992606285) internal successors, (1942), 1659 states have internal predecessors, (1942), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-03-04 09:23:03,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1670 states to 1670 states and 1960 transitions. [2025-03-04 09:23:03,170 INFO L78 Accepts]: Start accepts. Automaton has 1670 states and 1960 transitions. Word has length 58 [2025-03-04 09:23:03,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:23:03,184 INFO L471 AbstractCegarLoop]: Abstraction has 1670 states and 1960 transitions. [2025-03-04 09:23:03,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 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 09:23:03,184 INFO L276 IsEmpty]: Start isEmpty. Operand 1670 states and 1960 transitions. [2025-03-04 09:23:03,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-03-04 09:23:03,185 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:23:03,185 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:23:03,210 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-03-04 09:23:03,385 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 09:23:03,386 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr733REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-03-04 09:23:03,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:23:03,386 INFO L85 PathProgramCache]: Analyzing trace with hash 363016745, now seen corresponding path program 1 times [2025-03-04 09:23:03,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:23:03,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [42594546] [2025-03-04 09:23:03,387 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:23:03,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:23:03,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:23:03,389 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 09:23:03,390 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 09:23:03,504 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-03-04 09:23:03,552 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-03-04 09:23:03,552 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:23:03,553 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:23:03,560 INFO L256 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-04 09:23:03,562 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:23:03,570 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 09:23:03,618 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 09:23:03,628 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 09:23:03,628 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:23:03,628 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:23:03,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42594546] [2025-03-04 09:23:03,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42594546] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:23:03,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:23:03,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-04 09:23:03,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899185017] [2025-03-04 09:23:03,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:23:03,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-04 09:23:03,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:23:03,630 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-04 09:23:03,630 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-04 09:23:03,630 INFO L87 Difference]: Start difference. First operand 1670 states and 1960 transitions. Second operand has 7 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 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 09:23:06,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:23:06,379 INFO L93 Difference]: Finished difference Result 1688 states and 1990 transitions. [2025-03-04 09:23:06,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-04 09:23:06,379 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 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 66 [2025-03-04 09:23:06,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:23:06,384 INFO L225 Difference]: With dead ends: 1688 [2025-03-04 09:23:06,385 INFO L226 Difference]: Without dead ends: 1688 [2025-03-04 09:23:06,385 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 60 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 09:23:06,385 INFO L435 NwaCegarLoop]: 1380 mSDtfsCounter, 6 mSDsluCounter, 4252 mSDsCounter, 0 mSdLazyCounter, 2721 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 5632 SdHoareTripleChecker+Invalid, 2728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 2721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2025-03-04 09:23:06,385 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 5632 Invalid, 2728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 2721 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2025-03-04 09:23:06,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1688 states. [2025-03-04 09:23:06,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1688 to 1679. [2025-03-04 09:23:06,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1679 states, 1090 states have (on average 1.7917431192660551) internal successors, (1953), 1666 states have internal predecessors, (1953), 9 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (18), 11 states have call predecessors, (18), 9 states have call successors, (18) [2025-03-04 09:23:06,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1679 states to 1679 states and 1980 transitions. [2025-03-04 09:23:06,409 INFO L78 Accepts]: Start accepts. Automaton has 1679 states and 1980 transitions. Word has length 66 [2025-03-04 09:23:06,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:23:06,412 INFO L471 AbstractCegarLoop]: Abstraction has 1679 states and 1980 transitions. [2025-03-04 09:23:06,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 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 09:23:06,412 INFO L276 IsEmpty]: Start isEmpty. Operand 1679 states and 1980 transitions. [2025-03-04 09:23:06,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-03-04 09:23:06,412 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:23:06,412 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:23:06,422 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 09:23:06,613 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 09:23:06,613 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr734REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-03-04 09:23:06,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:23:06,613 INFO L85 PathProgramCache]: Analyzing trace with hash 363016746, now seen corresponding path program 1 times [2025-03-04 09:23:06,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:23:06,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1647615202] [2025-03-04 09:23:06,614 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:23:06,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:23:06,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:23:06,615 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 09:23:06,616 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 09:23:06,734 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-03-04 09:23:06,785 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-03-04 09:23:06,786 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:23:06,786 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:23:06,793 INFO L256 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:23:06,794 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:23:06,806 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 09:23:06,806 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:23:06,807 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:23:06,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647615202] [2025-03-04 09:23:06,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647615202] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:23:06,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:23:06,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:23:06,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018046229] [2025-03-04 09:23:06,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:23:06,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:23:06,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:23:06,807 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:23:06,807 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:23:06,807 INFO L87 Difference]: Start difference. First operand 1679 states and 1980 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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 09:23:06,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:23:06,844 INFO L93 Difference]: Finished difference Result 1673 states and 1966 transitions. [2025-03-04 09:23:06,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:23:06,845 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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 66 [2025-03-04 09:23:06,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:23:06,848 INFO L225 Difference]: With dead ends: 1673 [2025-03-04 09:23:06,848 INFO L226 Difference]: Without dead ends: 1673 [2025-03-04 09:23:06,848 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 63 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 09:23:06,851 INFO L435 NwaCegarLoop]: 1390 mSDtfsCounter, 0 mSDsluCounter, 2772 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4162 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 09:23:06,851 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4162 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 09:23:06,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1673 states. [2025-03-04 09:23:06,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1673 to 1673. [2025-03-04 09:23:06,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1673 states, 1084 states have (on average 1.794280442804428) internal successors, (1945), 1662 states have internal predecessors, (1945), 9 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2025-03-04 09:23:06,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1673 states to 1673 states and 1966 transitions. [2025-03-04 09:23:06,869 INFO L78 Accepts]: Start accepts. Automaton has 1673 states and 1966 transitions. Word has length 66 [2025-03-04 09:23:06,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:23:06,869 INFO L471 AbstractCegarLoop]: Abstraction has 1673 states and 1966 transitions. [2025-03-04 09:23:06,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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 09:23:06,869 INFO L276 IsEmpty]: Start isEmpty. Operand 1673 states and 1966 transitions. [2025-03-04 09:23:06,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-03-04 09:23:06,870 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:23:06,870 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] [2025-03-04 09:23:06,880 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-03-04 09:23:07,070 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 09:23:07,070 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr733REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-03-04 09:23:07,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:23:07,071 INFO L85 PathProgramCache]: Analyzing trace with hash 68435373, now seen corresponding path program 1 times [2025-03-04 09:23:07,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:23:07,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1165127669] [2025-03-04 09:23:07,071 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:23:07,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:23:07,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:23:07,073 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 09:23:07,075 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 09:23:07,200 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-03-04 09:23:07,257 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-03-04 09:23:07,257 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:23:07,257 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:23:07,265 INFO L256 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 09:23:07,266 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:23:07,283 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 09:23:07,283 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:23:07,323 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 09:23:07,323 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:23:07,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165127669] [2025-03-04 09:23:07,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165127669] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 09:23:07,323 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 09:23:07,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2025-03-04 09:23:07,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784733013] [2025-03-04 09:23:07,323 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 09:23:07,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-04 09:23:07,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:23:07,324 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-04 09:23:07,324 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-03-04 09:23:07,325 INFO L87 Difference]: Start difference. First operand 1673 states and 1966 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 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 09:23:07,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:23:07,441 INFO L93 Difference]: Finished difference Result 1685 states and 1985 transitions. [2025-03-04 09:23:07,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-04 09:23:07,442 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 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 67 [2025-03-04 09:23:07,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:23:07,444 INFO L225 Difference]: With dead ends: 1685 [2025-03-04 09:23:07,445 INFO L226 Difference]: Without dead ends: 1685 [2025-03-04 09:23:07,445 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 126 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 09:23:07,445 INFO L435 NwaCegarLoop]: 1389 mSDtfsCounter, 8 mSDsluCounter, 4156 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 5545 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 09:23:07,445 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 5545 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 09:23:07,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1685 states. [2025-03-04 09:23:07,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1685 to 1683. [2025-03-04 09:23:07,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1683 states, 1093 states have (on average 1.7932296431838974) internal successors, (1960), 1671 states have internal predecessors, (1960), 9 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2025-03-04 09:23:07,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1683 states to 1683 states and 1981 transitions. [2025-03-04 09:23:07,459 INFO L78 Accepts]: Start accepts. Automaton has 1683 states and 1981 transitions. Word has length 67 [2025-03-04 09:23:07,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:23:07,459 INFO L471 AbstractCegarLoop]: Abstraction has 1683 states and 1981 transitions. [2025-03-04 09:23:07,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 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 09:23:07,460 INFO L276 IsEmpty]: Start isEmpty. Operand 1683 states and 1981 transitions. [2025-03-04 09:23:07,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2025-03-04 09:23:07,460 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:23:07,460 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] [2025-03-04 09:23:07,470 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 09:23:07,660 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 09:23:07,661 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr733REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-03-04 09:23:07,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:23:07,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1353977047, now seen corresponding path program 2 times [2025-03-04 09:23:07,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:23:07,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1985947371] [2025-03-04 09:23:07,662 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 09:23:07,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:23:07,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:23:07,663 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 09:23:07,664 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 09:23:07,793 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 70 statements into 2 equivalence classes. [2025-03-04 09:23:14,609 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 70 of 70 statements. [2025-03-04 09:23:14,609 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 09:23:14,609 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:23:14,622 INFO L256 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-04 09:23:14,624 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:23:14,662 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 09:23:14,662 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:23:14,775 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 09:23:14,776 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:23:14,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985947371] [2025-03-04 09:23:14,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1985947371] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 09:23:14,776 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 09:23:14,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2025-03-04 09:23:14,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619998488] [2025-03-04 09:23:14,776 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 09:23:14,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-04 09:23:14,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:23:14,776 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-04 09:23:14,776 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2025-03-04 09:23:14,777 INFO L87 Difference]: Start difference. First operand 1683 states and 1981 transitions. Second operand has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 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 09:23:15,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:23:15,084 INFO L93 Difference]: Finished difference Result 1698 states and 2002 transitions. [2025-03-04 09:23:15,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-03-04 09:23:15,084 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 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 70 [2025-03-04 09:23:15,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:23:15,087 INFO L225 Difference]: With dead ends: 1698 [2025-03-04 09:23:15,087 INFO L226 Difference]: Without dead ends: 1692 [2025-03-04 09:23:15,087 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=182, Invalid=324, Unknown=0, NotChecked=0, Total=506 [2025-03-04 09:23:15,087 INFO L435 NwaCegarLoop]: 1390 mSDtfsCounter, 14 mSDsluCounter, 6930 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 8320 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-04 09:23:15,087 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 8320 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-04 09:23:15,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1692 states. [2025-03-04 09:23:15,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1692 to 1692. [2025-03-04 09:23:15,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1692 states, 1102 states have (on average 1.7885662431941924) internal successors, (1971), 1680 states have internal predecessors, (1971), 9 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2025-03-04 09:23:15,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1692 states to 1692 states and 1992 transitions. [2025-03-04 09:23:15,103 INFO L78 Accepts]: Start accepts. Automaton has 1692 states and 1992 transitions. Word has length 70 [2025-03-04 09:23:15,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:23:15,103 INFO L471 AbstractCegarLoop]: Abstraction has 1692 states and 1992 transitions. [2025-03-04 09:23:15,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 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 09:23:15,104 INFO L276 IsEmpty]: Start isEmpty. Operand 1692 states and 1992 transitions. [2025-03-04 09:23:15,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2025-03-04 09:23:15,104 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:23:15,104 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] [2025-03-04 09:23:15,126 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 09:23:15,310 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 09:23:15,310 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr733REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-03-04 09:23:15,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:23:15,311 INFO L85 PathProgramCache]: Analyzing trace with hash 76883113, now seen corresponding path program 3 times [2025-03-04 09:23:15,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:23:15,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [576887066] [2025-03-04 09:23:15,311 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 09:23:15,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:23:15,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:23:15,314 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 09:23:15,315 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 09:23:15,472 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 76 statements into 6 equivalence classes.