./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-3.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c098eb2ea0abe7b0f4b25f613d67df9ef36b2215e5396f258b75924d2167f9c8 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 00:35:50,219 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 00:35:50,272 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-09 00:35:50,276 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 00:35:50,279 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 00:35:50,298 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 00:35:50,300 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 00:35:50,300 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 00:35:50,300 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 00:35:50,301 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 00:35:50,301 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 00:35:50,301 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 00:35:50,301 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 00:35:50,302 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 00:35:50,302 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 00:35:50,302 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 00:35:50,302 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 00:35:50,302 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 00:35:50,302 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 00:35:50,302 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 00:35:50,303 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-09 00:35:50,303 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-09 00:35:50,303 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-09 00:35:50,303 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 00:35:50,303 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-09 00:35:50,303 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 00:35:50,303 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 00:35:50,303 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 00:35:50,303 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 00:35:50,303 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 00:35:50,304 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 00:35:50,304 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 00:35:50,304 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 00:35:50,304 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 00:35:50,304 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 00:35:50,304 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 00:35:50,304 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 00:35:50,304 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 00:35:50,304 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 00:35:50,304 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 00:35:50,304 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 00:35:50,304 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 00:35:50,305 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 -> c098eb2ea0abe7b0f4b25f613d67df9ef36b2215e5396f258b75924d2167f9c8 [2025-03-09 00:35:50,499 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 00:35:50,505 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 00:35:50,507 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 00:35:50,507 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 00:35:50,508 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 00:35:50,508 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-3.i [2025-03-09 00:35:51,605 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f42f04e77/494acd8da3a44ebe874685839a34355f/FLAGb87a98d71 [2025-03-09 00:35:51,921 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 00:35:51,925 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-3.i [2025-03-09 00:35:51,944 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f42f04e77/494acd8da3a44ebe874685839a34355f/FLAGb87a98d71 [2025-03-09 00:35:52,176 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f42f04e77/494acd8da3a44ebe874685839a34355f [2025-03-09 00:35:52,178 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 00:35:52,179 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 00:35:52,179 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 00:35:52,179 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 00:35:52,182 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 00:35:52,182 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 12:35:52" (1/1) ... [2025-03-09 00:35:52,183 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f732606 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:35:52, skipping insertion in model container [2025-03-09 00:35:52,183 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 12:35:52" (1/1) ... [2025-03-09 00:35:52,216 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 00:35:52,505 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:52,533 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:52,535 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:52,538 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:52,543 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:52,566 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:52,569 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:52,572 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:52,576 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:52,597 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:52,598 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:52,599 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:52,599 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:52,617 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:52,618 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:52,619 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:52,619 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:52,627 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:52,628 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:52,629 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:52,629 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:52,641 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:52,642 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:52,643 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:52,643 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:52,645 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:52,646 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:52,647 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:52,647 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:52,648 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:52,650 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:52,651 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:52,651 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:52,652 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:52,653 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:52,668 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 00:35:52,679 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2025-03-09 00:35:52,679 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@24983108 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:35:52, skipping insertion in model container [2025-03-09 00:35:52,679 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 00:35:52,680 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-03-09 00:35:52,683 INFO L158 Benchmark]: Toolchain (without parser) took 502.50ms. Allocated memory is still 142.6MB. Free memory was 102.1MB in the beginning and 72.9MB in the end (delta: 29.2MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-03-09 00:35:52,683 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 192.9MB. Free memory is still 119.5MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 00:35:52,684 INFO L158 Benchmark]: CACSL2BoogieTranslator took 500.97ms. Allocated memory is still 142.6MB. Free memory was 102.1MB in the beginning and 72.9MB in the end (delta: 29.2MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-03-09 00:35:52,685 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 192.9MB. Free memory is still 119.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 500.97ms. Allocated memory is still 142.6MB. Free memory was 102.1MB in the beginning and 72.9MB in the end (delta: 29.2MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 760]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-3.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c098eb2ea0abe7b0f4b25f613d67df9ef36b2215e5396f258b75924d2167f9c8 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 00:35:54,237 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 00:35:54,304 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-03-09 00:35:54,309 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 00:35:54,309 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 00:35:54,329 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 00:35:54,330 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 00:35:54,330 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 00:35:54,330 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 00:35:54,330 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 00:35:54,330 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 00:35:54,330 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 00:35:54,330 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 00:35:54,330 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 00:35:54,330 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 00:35:54,331 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 00:35:54,331 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 00:35:54,331 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 00:35:54,331 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 00:35:54,331 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 00:35:54,331 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-09 00:35:54,331 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-09 00:35:54,331 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-09 00:35:54,331 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 00:35:54,331 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-09 00:35:54,331 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-09 00:35:54,331 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-09 00:35:54,331 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 00:35:54,331 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 00:35:54,331 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 00:35:54,331 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 00:35:54,331 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 00:35:54,331 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 00:35:54,331 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 00:35:54,331 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 00:35:54,332 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 00:35:54,332 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 00:35:54,332 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 00:35:54,332 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-09 00:35:54,332 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-09 00:35:54,332 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 00:35:54,332 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 00:35:54,332 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 00:35:54,332 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 00:35:54,332 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 -> c098eb2ea0abe7b0f4b25f613d67df9ef36b2215e5396f258b75924d2167f9c8 [2025-03-09 00:35:54,554 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 00:35:54,562 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 00:35:54,563 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 00:35:54,565 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 00:35:54,565 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 00:35:54,567 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-3.i [2025-03-09 00:35:55,735 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29dc93123/f0f376fc77eb4a069e861169bcf84a0c/FLAGb21908f02 [2025-03-09 00:35:56,014 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 00:35:56,017 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-3.i [2025-03-09 00:35:56,036 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29dc93123/f0f376fc77eb4a069e861169bcf84a0c/FLAGb21908f02 [2025-03-09 00:35:56,294 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29dc93123/f0f376fc77eb4a069e861169bcf84a0c [2025-03-09 00:35:56,295 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 00:35:56,296 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 00:35:56,297 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 00:35:56,297 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 00:35:56,300 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 00:35:56,300 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 12:35:56" (1/1) ... [2025-03-09 00:35:56,301 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72edc2ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:35:56, skipping insertion in model container [2025-03-09 00:35:56,301 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 12:35:56" (1/1) ... [2025-03-09 00:35:56,327 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 00:35:56,580 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:56,607 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:56,610 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:56,613 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:56,618 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:56,644 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:56,646 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:56,650 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:56,653 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:56,689 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:56,690 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:56,694 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:56,694 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:56,714 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:56,715 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:56,716 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:56,716 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:56,725 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:56,725 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:56,726 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:56,727 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:56,739 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:56,739 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:56,742 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:56,743 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:56,743 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:56,746 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:56,747 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:56,748 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:56,749 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:56,753 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:56,755 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:56,755 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:56,756 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:56,759 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:56,765 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 00:35:56,776 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-03-09 00:35:56,783 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 00:35:56,810 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:56,820 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:56,821 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:56,823 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:56,826 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:56,844 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:56,845 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:56,846 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:56,848 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:56,863 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:56,863 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:56,866 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:56,866 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:56,873 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:56,873 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:56,874 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:56,874 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:56,882 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:56,883 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:56,884 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:56,884 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:56,892 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:56,893 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:56,895 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:56,895 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:56,896 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:56,898 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:56,898 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:56,899 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:56,899 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:56,901 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:56,902 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:56,902 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:56,902 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:56,904 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:35:56,909 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 00:35:56,913 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 00:35:57,018 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 00:35:57,046 INFO L204 MainTranslator]: Completed translation [2025-03-09 00:35:57,046 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:35:57 WrapperNode [2025-03-09 00:35:57,046 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 00:35:57,047 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 00:35:57,047 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 00:35:57,047 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 00:35:57,051 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:35:57" (1/1) ... [2025-03-09 00:35:57,080 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:35:57" (1/1) ... [2025-03-09 00:35:57,147 INFO L138 Inliner]: procedures = 180, calls = 606, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2470 [2025-03-09 00:35:57,148 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 00:35:57,148 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 00:35:57,148 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 00:35:57,148 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 00:35:57,154 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:35:57" (1/1) ... [2025-03-09 00:35:57,154 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:35:57" (1/1) ... [2025-03-09 00:35:57,169 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:35:57" (1/1) ... [2025-03-09 00:35:57,292 INFO L175 MemorySlicer]: Split 574 memory accesses to 3 slices as follows [2, 106, 466]. 81 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 102 writes are split as follows [0, 4, 98]. [2025-03-09 00:35:57,295 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:35:57" (1/1) ... [2025-03-09 00:35:57,295 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:35:57" (1/1) ... [2025-03-09 00:35:57,350 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:35:57" (1/1) ... [2025-03-09 00:35:57,355 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:35:57" (1/1) ... [2025-03-09 00:35:57,364 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:35:57" (1/1) ... [2025-03-09 00:35:57,371 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:35:57" (1/1) ... [2025-03-09 00:35:57,388 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 00:35:57,390 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 00:35:57,390 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 00:35:57,390 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 00:35:57,391 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:35:57" (1/1) ... [2025-03-09 00:35:57,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 00:35:57,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:35:57,416 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-09 00:35:57,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-09 00:35:57,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2025-03-09 00:35:57,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2025-03-09 00:35:57,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2025-03-09 00:35:57,436 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2025-03-09 00:35:57,436 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2025-03-09 00:35:57,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-03-09 00:35:57,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-03-09 00:35:57,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2025-03-09 00:35:57,436 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-09 00:35:57,436 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-09 00:35:57,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-03-09 00:35:57,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-03-09 00:35:57,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2025-03-09 00:35:57,436 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-03-09 00:35:57,436 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-03-09 00:35:57,436 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2025-03-09 00:35:57,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-09 00:35:57,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 00:35:57,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-09 00:35:57,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-09 00:35:57,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-09 00:35:57,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-09 00:35:57,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-09 00:35:57,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-09 00:35:57,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-09 00:35:57,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-09 00:35:57,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-03-09 00:35:57,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-03-09 00:35:57,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2025-03-09 00:35:57,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-09 00:35:57,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-03-09 00:35:57,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2025-03-09 00:35:57,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 00:35:57,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 00:35:57,700 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 00:35:57,702 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 00:36:03,007 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L731: call ULTIMATE.dealloc(main_~#i~0#1.base, main_~#i~0#1.offset);havoc main_~#i~0#1.base, main_~#i~0#1.offset; [2025-03-09 00:36:03,170 INFO L? ?]: Removed 2433 outVars from TransFormulas that were not future-live. [2025-03-09 00:36:03,171 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 00:36:03,220 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 00:36:03,220 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 00:36:03,220 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 12:36:03 BoogieIcfgContainer [2025-03-09 00:36:03,221 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 00:36:03,222 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 00:36:03,222 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 00:36:03,228 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 00:36:03,228 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 12:35:56" (1/3) ... [2025-03-09 00:36:03,228 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@572444c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 12:36:03, skipping insertion in model container [2025-03-09 00:36:03,228 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:35:57" (2/3) ... [2025-03-09 00:36:03,229 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@572444c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 12:36:03, skipping insertion in model container [2025-03-09 00:36:03,229 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 12:36:03" (3/3) ... [2025-03-09 00:36:03,230 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test10-3.i [2025-03-09 00:36:03,239 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 00:36:03,241 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_FNV_test10-3.i that has 6 procedures, 2451 locations, 1 initial locations, 87 loop locations, and 1189 error locations. [2025-03-09 00:36:03,297 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 00:36:03,305 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;@1d77fc9c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 00:36:03,305 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1189 error locations. [2025-03-09 00:36:03,313 INFO L276 IsEmpty]: Start isEmpty. Operand has 2441 states, 1240 states have (on average 2.2056451612903225) internal successors, (2735), 2427 states have internal predecessors, (2735), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2025-03-09 00:36:03,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-03-09 00:36:03,317 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:36:03,317 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-03-09 00:36:03,317 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1186REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-09 00:36:03,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:36:03,321 INFO L85 PathProgramCache]: Analyzing trace with hash 2772423, now seen corresponding path program 1 times [2025-03-09 00:36:03,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:36:03,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [813656033] [2025-03-09 00:36:03,327 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:36:03,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:36:03,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:36:03,331 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:36:03,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-09 00:36:03,500 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-09 00:36:03,506 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-09 00:36:03,506 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:36:03,506 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:36:03,509 INFO L256 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 00:36:03,514 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:36:03,544 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-09 00:36:03,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:36:03,561 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:36:03,562 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:36:03,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813656033] [2025-03-09 00:36:03,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813656033] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:36:03,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:36:03,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 00:36:03,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988671352] [2025-03-09 00:36:03,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:36:03,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 00:36:03,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:36:03,586 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 00:36:03,587 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:36:03,592 INFO L87 Difference]: Start difference. First operand has 2441 states, 1240 states have (on average 2.2056451612903225) internal successors, (2735), 2427 states have internal predecessors, (2735), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:36:06,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:36:06,288 INFO L93 Difference]: Finished difference Result 3272 states and 3472 transitions. [2025-03-09 00:36:06,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 00:36:06,291 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2025-03-09 00:36:06,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:36:06,308 INFO L225 Difference]: With dead ends: 3272 [2025-03-09 00:36:06,308 INFO L226 Difference]: Without dead ends: 3270 [2025-03-09 00:36:06,309 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:36:06,311 INFO L435 NwaCegarLoop]: 1660 mSDtfsCounter, 2305 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 1665 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2315 SdHoareTripleChecker+Valid, 2226 SdHoareTripleChecker+Invalid, 1690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2025-03-09 00:36:06,311 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2315 Valid, 2226 Invalid, 1690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1665 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2025-03-09 00:36:06,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3270 states. [2025-03-09 00:36:06,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3270 to 2583. [2025-03-09 00:36:06,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2583 states, 1410 states have (on average 2.051063829787234) internal successors, (2892), 2567 states have internal predecessors, (2892), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2025-03-09 00:36:06,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2583 states to 2583 states and 2924 transitions. [2025-03-09 00:36:06,405 INFO L78 Accepts]: Start accepts. Automaton has 2583 states and 2924 transitions. Word has length 3 [2025-03-09 00:36:06,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:36:06,405 INFO L471 AbstractCegarLoop]: Abstraction has 2583 states and 2924 transitions. [2025-03-09 00:36:06,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:36:06,406 INFO L276 IsEmpty]: Start isEmpty. Operand 2583 states and 2924 transitions. [2025-03-09 00:36:06,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-03-09 00:36:06,406 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:36:06,406 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-03-09 00:36:06,413 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-09 00:36:06,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:36:06,607 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1187REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-09 00:36:06,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:36:06,607 INFO L85 PathProgramCache]: Analyzing trace with hash 2772424, now seen corresponding path program 1 times [2025-03-09 00:36:06,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:36:06,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [254869016] [2025-03-09 00:36:06,608 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:36:06,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:36:06,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:36:06,609 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:36:06,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-09 00:36:06,737 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-09 00:36:06,740 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-09 00:36:06,740 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:36:06,740 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:36:06,742 INFO L256 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 00:36:06,744 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:36:06,752 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-09 00:36:06,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:36:06,763 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:36:06,763 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:36:06,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254869016] [2025-03-09 00:36:06,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [254869016] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:36:06,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:36:06,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 00:36:06,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669080359] [2025-03-09 00:36:06,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:36:06,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 00:36:06,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:36:06,765 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 00:36:06,765 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:36:06,765 INFO L87 Difference]: Start difference. First operand 2583 states and 2924 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:36:10,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:36:10,133 INFO L93 Difference]: Finished difference Result 3376 states and 3797 transitions. [2025-03-09 00:36:10,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 00:36:10,133 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2025-03-09 00:36:10,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:36:10,141 INFO L225 Difference]: With dead ends: 3376 [2025-03-09 00:36:10,141 INFO L226 Difference]: Without dead ends: 3376 [2025-03-09 00:36:10,141 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:36:10,142 INFO L435 NwaCegarLoop]: 2211 mSDtfsCounter, 867 mSDsluCounter, 1388 mSDsCounter, 0 mSdLazyCounter, 1519 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 870 SdHoareTripleChecker+Valid, 3599 SdHoareTripleChecker+Invalid, 1530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2025-03-09 00:36:10,142 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [870 Valid, 3599 Invalid, 1530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1519 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2025-03-09 00:36:10,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3376 states. [2025-03-09 00:36:10,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3376 to 3048. [2025-03-09 00:36:10,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3048 states, 1873 states have (on average 2.006940736785905) internal successors, (3759), 3029 states have internal predecessors, (3759), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2025-03-09 00:36:10,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3048 states to 3048 states and 3797 transitions. [2025-03-09 00:36:10,186 INFO L78 Accepts]: Start accepts. Automaton has 3048 states and 3797 transitions. Word has length 3 [2025-03-09 00:36:10,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:36:10,186 INFO L471 AbstractCegarLoop]: Abstraction has 3048 states and 3797 transitions. [2025-03-09 00:36:10,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:36:10,186 INFO L276 IsEmpty]: Start isEmpty. Operand 3048 states and 3797 transitions. [2025-03-09 00:36:10,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-03-09 00:36:10,186 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:36:10,186 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:36:10,193 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-09 00:36:10,387 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:36:10,387 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1183REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-09 00:36:10,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:36:10,387 INFO L85 PathProgramCache]: Analyzing trace with hash 674207459, now seen corresponding path program 1 times [2025-03-09 00:36:10,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:36:10,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [484231322] [2025-03-09 00:36:10,388 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:36:10,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:36:10,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:36:10,391 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:36:10,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-09 00:36:10,517 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 00:36:10,527 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 00:36:10,527 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:36:10,527 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:36:10,528 INFO L256 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-09 00:36:10,530 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:36:10,535 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-09 00:36:10,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-09 00:36:10,596 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-03-09 00:36:10,610 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-09 00:36:10,610 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-03-09 00:36:10,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:36:10,620 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:36:10,620 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:36:10,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484231322] [2025-03-09 00:36:10,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484231322] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:36:10,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:36:10,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 00:36:10,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432189594] [2025-03-09 00:36:10,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:36:10,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:36:10,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:36:10,621 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:36:10,621 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:36:10,621 INFO L87 Difference]: Start difference. First operand 3048 states and 3797 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:36:16,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:36:16,399 INFO L93 Difference]: Finished difference Result 5297 states and 6196 transitions. [2025-03-09 00:36:16,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:36:16,400 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2025-03-09 00:36:16,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:36:16,412 INFO L225 Difference]: With dead ends: 5297 [2025-03-09 00:36:16,414 INFO L226 Difference]: Without dead ends: 5297 [2025-03-09 00:36:16,415 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:36:16,416 INFO L435 NwaCegarLoop]: 1166 mSDtfsCounter, 2368 mSDsluCounter, 2185 mSDsCounter, 0 mSdLazyCounter, 4325 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2377 SdHoareTripleChecker+Valid, 3351 SdHoareTripleChecker+Invalid, 4351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 4325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2025-03-09 00:36:16,416 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2377 Valid, 3351 Invalid, 4351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 4325 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2025-03-09 00:36:16,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5297 states. [2025-03-09 00:36:16,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5297 to 3760. [2025-03-09 00:36:16,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3760 states, 2585 states have (on average 2.0336557059961313) internal successors, (5257), 3735 states have internal predecessors, (5257), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-09 00:36:16,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3760 states to 3760 states and 5307 transitions. [2025-03-09 00:36:16,478 INFO L78 Accepts]: Start accepts. Automaton has 3760 states and 5307 transitions. Word has length 7 [2025-03-09 00:36:16,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:36:16,478 INFO L471 AbstractCegarLoop]: Abstraction has 3760 states and 5307 transitions. [2025-03-09 00:36:16,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:36:16,478 INFO L276 IsEmpty]: Start isEmpty. Operand 3760 states and 5307 transitions. [2025-03-09 00:36:16,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-03-09 00:36:16,479 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:36:16,479 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:36:16,486 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-09 00:36:16,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:36:16,680 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1180REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-09 00:36:16,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:36:16,681 INFO L85 PathProgramCache]: Analyzing trace with hash -574402570, now seen corresponding path program 1 times [2025-03-09 00:36:16,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:36:16,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1340202546] [2025-03-09 00:36:16,682 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:36:16,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:36:16,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:36:16,684 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:36:16,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-09 00:36:16,826 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 00:36:16,836 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 00:36:16,836 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:36:16,836 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:36:16,837 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 00:36:16,839 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:36:16,844 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-09 00:36:16,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:36:16,851 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:36:16,851 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:36:16,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340202546] [2025-03-09 00:36:16,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340202546] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:36:16,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:36:16,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 00:36:16,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529435407] [2025-03-09 00:36:16,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:36:16,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 00:36:16,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:36:16,852 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 00:36:16,852 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:36:16,852 INFO L87 Difference]: Start difference. First operand 3760 states and 5307 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:36:18,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:36:18,880 INFO L93 Difference]: Finished difference Result 4464 states and 5969 transitions. [2025-03-09 00:36:18,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 00:36:18,881 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-03-09 00:36:18,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:36:18,895 INFO L225 Difference]: With dead ends: 4464 [2025-03-09 00:36:18,895 INFO L226 Difference]: Without dead ends: 4464 [2025-03-09 00:36:18,895 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:36:18,897 INFO L435 NwaCegarLoop]: 2389 mSDtfsCounter, 1906 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 1613 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1916 SdHoareTripleChecker+Valid, 3149 SdHoareTripleChecker+Invalid, 1712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-03-09 00:36:18,897 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1916 Valid, 3149 Invalid, 1712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1613 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-03-09 00:36:18,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4464 states. [2025-03-09 00:36:18,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4464 to 3668. [2025-03-09 00:36:18,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3668 states, 2585 states have (on average 1.9504835589941973) internal successors, (5042), 3643 states have internal predecessors, (5042), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-09 00:36:18,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3668 states to 3668 states and 5092 transitions. [2025-03-09 00:36:18,951 INFO L78 Accepts]: Start accepts. Automaton has 3668 states and 5092 transitions. Word has length 8 [2025-03-09 00:36:18,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:36:18,952 INFO L471 AbstractCegarLoop]: Abstraction has 3668 states and 5092 transitions. [2025-03-09 00:36:18,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:36:18,952 INFO L276 IsEmpty]: Start isEmpty. Operand 3668 states and 5092 transitions. [2025-03-09 00:36:18,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-03-09 00:36:18,952 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:36:18,952 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:36:18,960 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-09 00:36:19,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:36:19,153 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1181REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-09 00:36:19,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:36:19,153 INFO L85 PathProgramCache]: Analyzing trace with hash -574402569, now seen corresponding path program 1 times [2025-03-09 00:36:19,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:36:19,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [982986644] [2025-03-09 00:36:19,154 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:36:19,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:36:19,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:36:19,156 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:36:19,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-09 00:36:19,278 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 00:36:19,286 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 00:36:19,286 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:36:19,286 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:36:19,287 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 00:36:19,289 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:36:19,294 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-09 00:36:19,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:36:19,311 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:36:19,311 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:36:19,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982986644] [2025-03-09 00:36:19,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982986644] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:36:19,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:36:19,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 00:36:19,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077622641] [2025-03-09 00:36:19,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:36:19,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 00:36:19,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:36:19,312 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 00:36:19,312 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:36:19,312 INFO L87 Difference]: Start difference. First operand 3668 states and 5092 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:36:22,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:36:22,496 INFO L93 Difference]: Finished difference Result 5453 states and 7532 transitions. [2025-03-09 00:36:22,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 00:36:22,496 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-03-09 00:36:22,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:36:22,509 INFO L225 Difference]: With dead ends: 5453 [2025-03-09 00:36:22,509 INFO L226 Difference]: Without dead ends: 5453 [2025-03-09 00:36:22,509 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:36:22,509 INFO L435 NwaCegarLoop]: 2748 mSDtfsCounter, 1411 mSDsluCounter, 1190 mSDsCounter, 0 mSdLazyCounter, 1684 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1415 SdHoareTripleChecker+Valid, 3938 SdHoareTripleChecker+Invalid, 1709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2025-03-09 00:36:22,510 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1415 Valid, 3938 Invalid, 1709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1684 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2025-03-09 00:36:22,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5453 states. [2025-03-09 00:36:22,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5453 to 4008. [2025-03-09 00:36:22,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4008 states, 2935 states have (on average 1.9345826235093697) internal successors, (5678), 3983 states have internal predecessors, (5678), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-09 00:36:22,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4008 states to 4008 states and 5728 transitions. [2025-03-09 00:36:22,581 INFO L78 Accepts]: Start accepts. Automaton has 4008 states and 5728 transitions. Word has length 8 [2025-03-09 00:36:22,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:36:22,583 INFO L471 AbstractCegarLoop]: Abstraction has 4008 states and 5728 transitions. [2025-03-09 00:36:22,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:36:22,583 INFO L276 IsEmpty]: Start isEmpty. Operand 4008 states and 5728 transitions. [2025-03-09 00:36:22,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-03-09 00:36:22,583 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:36:22,583 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:36:22,597 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-09 00:36:22,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:36:22,785 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr548REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-09 00:36:22,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:36:22,786 INFO L85 PathProgramCache]: Analyzing trace with hash 761747980, now seen corresponding path program 1 times [2025-03-09 00:36:22,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:36:22,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [875124036] [2025-03-09 00:36:22,786 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:36:22,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:36:22,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:36:22,788 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:36:22,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-09 00:36:22,914 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-09 00:36:22,923 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-09 00:36:22,923 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:36:22,923 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:36:22,925 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 00:36:22,927 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:36:22,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:36:22,952 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:36:22,952 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:36:22,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875124036] [2025-03-09 00:36:22,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875124036] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:36:22,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:36:22,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 00:36:22,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642930311] [2025-03-09 00:36:22,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:36:22,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:36:22,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:36:22,953 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:36:22,953 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:36:22,953 INFO L87 Difference]: Start difference. First operand 4008 states and 5728 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:36:26,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:36:26,127 INFO L93 Difference]: Finished difference Result 4643 states and 6221 transitions. [2025-03-09 00:36:26,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:36:26,128 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-03-09 00:36:26,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:36:26,138 INFO L225 Difference]: With dead ends: 4643 [2025-03-09 00:36:26,138 INFO L226 Difference]: Without dead ends: 4643 [2025-03-09 00:36:26,138 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 [2025-03-09 00:36:26,139 INFO L435 NwaCegarLoop]: 1609 mSDtfsCounter, 2268 mSDsluCounter, 1931 mSDsCounter, 0 mSdLazyCounter, 2719 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2278 SdHoareTripleChecker+Valid, 3540 SdHoareTripleChecker+Invalid, 2751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2025-03-09 00:36:26,139 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2278 Valid, 3540 Invalid, 2751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 2719 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2025-03-09 00:36:26,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4643 states. [2025-03-09 00:36:26,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4643 to 3985. [2025-03-09 00:36:26,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3985 states, 2935 states have (on average 1.918909710391823) internal successors, (5632), 3960 states have internal predecessors, (5632), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-09 00:36:26,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3985 states to 3985 states and 5682 transitions. [2025-03-09 00:36:26,184 INFO L78 Accepts]: Start accepts. Automaton has 3985 states and 5682 transitions. Word has length 10 [2025-03-09 00:36:26,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:36:26,184 INFO L471 AbstractCegarLoop]: Abstraction has 3985 states and 5682 transitions. [2025-03-09 00:36:26,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:36:26,184 INFO L276 IsEmpty]: Start isEmpty. Operand 3985 states and 5682 transitions. [2025-03-09 00:36:26,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-03-09 00:36:26,185 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:36:26,185 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:36:26,192 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-09 00:36:26,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:36:26,389 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr549REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-09 00:36:26,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:36:26,389 INFO L85 PathProgramCache]: Analyzing trace with hash 761747981, now seen corresponding path program 1 times [2025-03-09 00:36:26,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:36:26,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [33289757] [2025-03-09 00:36:26,390 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:36:26,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:36:26,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:36:26,391 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:36:26,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-09 00:36:26,536 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-09 00:36:26,547 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-09 00:36:26,547 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:36:26,547 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:36:26,550 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-09 00:36:26,552 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:36:26,559 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-09 00:36:26,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:36:26,607 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:36:26,607 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:36:26,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33289757] [2025-03-09 00:36:26,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33289757] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:36:26,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:36:26,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 00:36:26,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968603909] [2025-03-09 00:36:26,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:36:26,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:36:26,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:36:26,608 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:36:26,608 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:36:26,608 INFO L87 Difference]: Start difference. First operand 3985 states and 5682 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:36:30,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:36:30,325 INFO L93 Difference]: Finished difference Result 4726 states and 6495 transitions. [2025-03-09 00:36:30,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:36:30,325 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-03-09 00:36:30,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:36:30,334 INFO L225 Difference]: With dead ends: 4726 [2025-03-09 00:36:30,334 INFO L226 Difference]: Without dead ends: 4726 [2025-03-09 00:36:30,334 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 [2025-03-09 00:36:30,334 INFO L435 NwaCegarLoop]: 2116 mSDtfsCounter, 848 mSDsluCounter, 2543 mSDsCounter, 0 mSdLazyCounter, 2644 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 4659 SdHoareTripleChecker+Invalid, 2659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2025-03-09 00:36:30,334 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [851 Valid, 4659 Invalid, 2659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 2644 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2025-03-09 00:36:30,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4726 states. [2025-03-09 00:36:30,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4726 to 4032. [2025-03-09 00:36:30,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4032 states, 2982 states have (on average 1.90878604963112) internal successors, (5692), 4007 states have internal predecessors, (5692), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-09 00:36:30,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4032 states to 4032 states and 5742 transitions. [2025-03-09 00:36:30,377 INFO L78 Accepts]: Start accepts. Automaton has 4032 states and 5742 transitions. Word has length 10 [2025-03-09 00:36:30,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:36:30,378 INFO L471 AbstractCegarLoop]: Abstraction has 4032 states and 5742 transitions. [2025-03-09 00:36:30,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:36:30,378 INFO L276 IsEmpty]: Start isEmpty. Operand 4032 states and 5742 transitions. [2025-03-09 00:36:30,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-03-09 00:36:30,378 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:36:30,378 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:36:30,389 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-09 00:36:30,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:36:30,579 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr525REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-09 00:36:30,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:36:30,579 INFO L85 PathProgramCache]: Analyzing trace with hash 2139307635, now seen corresponding path program 1 times [2025-03-09 00:36:30,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:36:30,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1030716741] [2025-03-09 00:36:30,580 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:36:30,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:36:30,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:36:30,581 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:36:30,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-09 00:36:30,706 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-09 00:36:30,715 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-09 00:36:30,715 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:36:30,715 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:36:30,717 INFO L256 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 00:36:30,718 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:36:30,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:36:30,728 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:36:30,728 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:36:30,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030716741] [2025-03-09 00:36:30,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1030716741] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:36:30,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:36:30,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:36:30,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899109882] [2025-03-09 00:36:30,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:36:30,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:36:30,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:36:30,729 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:36:30,729 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:36:30,729 INFO L87 Difference]: Start difference. First operand 4032 states and 5742 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:36:30,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:36:30,798 INFO L93 Difference]: Finished difference Result 3954 states and 5621 transitions. [2025-03-09 00:36:30,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 00:36:30,798 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2025-03-09 00:36:30,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:36:30,808 INFO L225 Difference]: With dead ends: 3954 [2025-03-09 00:36:30,808 INFO L226 Difference]: Without dead ends: 3954 [2025-03-09 00:36:30,808 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 [2025-03-09 00:36:30,809 INFO L435 NwaCegarLoop]: 2355 mSDtfsCounter, 45 mSDsluCounter, 4687 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 7042 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-09 00:36:30,809 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 7042 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-09 00:36:30,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3954 states. [2025-03-09 00:36:30,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3954 to 3948. [2025-03-09 00:36:30,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3948 states, 2917 states have (on average 1.9077819677751113) internal successors, (5565), 3923 states have internal predecessors, (5565), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-09 00:36:30,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3948 states to 3948 states and 5615 transitions. [2025-03-09 00:36:30,872 INFO L78 Accepts]: Start accepts. Automaton has 3948 states and 5615 transitions. Word has length 11 [2025-03-09 00:36:30,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:36:30,872 INFO L471 AbstractCegarLoop]: Abstraction has 3948 states and 5615 transitions. [2025-03-09 00:36:30,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:36:30,873 INFO L276 IsEmpty]: Start isEmpty. Operand 3948 states and 5615 transitions. [2025-03-09 00:36:30,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-03-09 00:36:30,874 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:36:30,874 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:36:30,881 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-09 00:36:31,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:36:31,075 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1170REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-09 00:36:31,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:36:31,076 INFO L85 PathProgramCache]: Analyzing trace with hash -737712107, now seen corresponding path program 1 times [2025-03-09 00:36:31,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:36:31,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [989219137] [2025-03-09 00:36:31,076 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:36:31,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:36:31,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:36:31,078 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:36:31,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-09 00:36:31,212 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-09 00:36:31,230 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 00:36:31,230 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:36:31,230 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:36:31,233 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 00:36:31,235 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:36:31,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:36:31,264 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:36:31,264 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:36:31,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989219137] [2025-03-09 00:36:31,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989219137] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:36:31,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:36:31,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 00:36:31,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453063021] [2025-03-09 00:36:31,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:36:31,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:36:31,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:36:31,265 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:36:31,265 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:36:31,265 INFO L87 Difference]: Start difference. First operand 3948 states and 5615 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:36:34,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:36:34,007 INFO L93 Difference]: Finished difference Result 4623 states and 6335 transitions. [2025-03-09 00:36:34,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:36:34,008 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-03-09 00:36:34,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:36:34,014 INFO L225 Difference]: With dead ends: 4623 [2025-03-09 00:36:34,014 INFO L226 Difference]: Without dead ends: 4623 [2025-03-09 00:36:34,014 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:36:34,015 INFO L435 NwaCegarLoop]: 2239 mSDtfsCounter, 1871 mSDsluCounter, 2379 mSDsCounter, 0 mSdLazyCounter, 2918 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1881 SdHoareTripleChecker+Valid, 4618 SdHoareTripleChecker+Invalid, 2950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2025-03-09 00:36:34,015 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1881 Valid, 4618 Invalid, 2950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 2918 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2025-03-09 00:36:34,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4623 states. [2025-03-09 00:36:34,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4623 to 3925. [2025-03-09 00:36:34,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3925 states, 2917 states have (on average 1.8920123414466918) internal successors, (5519), 3900 states have internal predecessors, (5519), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-09 00:36:34,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3925 states to 3925 states and 5569 transitions. [2025-03-09 00:36:34,050 INFO L78 Accepts]: Start accepts. Automaton has 3925 states and 5569 transitions. Word has length 19 [2025-03-09 00:36:34,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:36:34,050 INFO L471 AbstractCegarLoop]: Abstraction has 3925 states and 5569 transitions. [2025-03-09 00:36:34,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:36:34,050 INFO L276 IsEmpty]: Start isEmpty. Operand 3925 states and 5569 transitions. [2025-03-09 00:36:34,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-03-09 00:36:34,051 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:36:34,051 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:36:34,059 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-03-09 00:36:34,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:36:34,252 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1171REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-09 00:36:34,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:36:34,252 INFO L85 PathProgramCache]: Analyzing trace with hash -737712106, now seen corresponding path program 1 times [2025-03-09 00:36:34,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:36:34,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [809341550] [2025-03-09 00:36:34,252 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:36:34,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:36:34,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:36:34,254 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:36:34,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-09 00:36:34,381 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-09 00:36:34,401 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 00:36:34,401 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:36:34,401 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:36:34,404 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-09 00:36:34,405 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:36:34,416 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-09 00:36:34,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:36:34,479 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:36:34,479 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:36:34,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809341550] [2025-03-09 00:36:34,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809341550] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:36:34,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:36:34,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 00:36:34,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393272104] [2025-03-09 00:36:34,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:36:34,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:36:34,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:36:34,480 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:36:34,480 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:36:34,480 INFO L87 Difference]: Start difference. First operand 3925 states and 5569 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:36:38,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:36:38,473 INFO L93 Difference]: Finished difference Result 5406 states and 7375 transitions. [2025-03-09 00:36:38,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:36:38,473 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-03-09 00:36:38,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:36:38,481 INFO L225 Difference]: With dead ends: 5406 [2025-03-09 00:36:38,481 INFO L226 Difference]: Without dead ends: 5406 [2025-03-09 00:36:38,481 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:36:38,481 INFO L435 NwaCegarLoop]: 2587 mSDtfsCounter, 1447 mSDsluCounter, 2868 mSDsCounter, 0 mSdLazyCounter, 3036 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1451 SdHoareTripleChecker+Valid, 5455 SdHoareTripleChecker+Invalid, 3058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 3036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2025-03-09 00:36:38,482 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1451 Valid, 5455 Invalid, 3058 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 3036 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2025-03-09 00:36:38,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5406 states. [2025-03-09 00:36:38,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5406 to 4039. [2025-03-09 00:36:38,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4039 states, 3031 states have (on average 1.8663807324315407) internal successors, (5657), 4014 states have internal predecessors, (5657), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-09 00:36:38,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4039 states to 4039 states and 5707 transitions. [2025-03-09 00:36:38,518 INFO L78 Accepts]: Start accepts. Automaton has 4039 states and 5707 transitions. Word has length 19 [2025-03-09 00:36:38,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:36:38,518 INFO L471 AbstractCegarLoop]: Abstraction has 4039 states and 5707 transitions. [2025-03-09 00:36:38,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:36:38,518 INFO L276 IsEmpty]: Start isEmpty. Operand 4039 states and 5707 transitions. [2025-03-09 00:36:38,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-03-09 00:36:38,519 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:36:38,519 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:36:38,526 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-03-09 00:36:38,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:36:38,720 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr862REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-09 00:36:38,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:36:38,720 INFO L85 PathProgramCache]: Analyzing trace with hash -756582698, now seen corresponding path program 1 times [2025-03-09 00:36:38,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:36:38,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1883026659] [2025-03-09 00:36:38,720 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:36:38,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:36:38,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:36:38,722 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:36:38,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-09 00:36:38,875 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-09 00:36:38,893 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 00:36:38,893 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:36:38,893 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:36:38,899 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 00:36:38,904 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:36:38,908 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-09 00:36:38,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:36:38,936 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:36:38,936 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:36:38,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883026659] [2025-03-09 00:36:38,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883026659] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:36:38,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:36:38,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 00:36:38,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374731308] [2025-03-09 00:36:38,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:36:38,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:36:38,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:36:38,937 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:36:38,937 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:36:38,937 INFO L87 Difference]: Start difference. First operand 4039 states and 5707 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:36:41,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:36:41,635 INFO L93 Difference]: Finished difference Result 4730 states and 6351 transitions. [2025-03-09 00:36:41,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:36:41,635 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-03-09 00:36:41,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:36:41,641 INFO L225 Difference]: With dead ends: 4730 [2025-03-09 00:36:41,641 INFO L226 Difference]: Without dead ends: 4730 [2025-03-09 00:36:41,641 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:36:41,642 INFO L435 NwaCegarLoop]: 2239 mSDtfsCounter, 1846 mSDsluCounter, 2379 mSDsCounter, 0 mSdLazyCounter, 2872 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1856 SdHoareTripleChecker+Valid, 4618 SdHoareTripleChecker+Invalid, 2903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 2872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2025-03-09 00:36:41,642 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1856 Valid, 4618 Invalid, 2903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 2872 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2025-03-09 00:36:41,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4730 states. [2025-03-09 00:36:41,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4730 to 4016. [2025-03-09 00:36:41,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4016 states, 3031 states have (on average 1.8208512042230287) internal successors, (5519), 3991 states have internal predecessors, (5519), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-09 00:36:41,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4016 states to 4016 states and 5569 transitions. [2025-03-09 00:36:41,676 INFO L78 Accepts]: Start accepts. Automaton has 4016 states and 5569 transitions. Word has length 19 [2025-03-09 00:36:41,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:36:41,676 INFO L471 AbstractCegarLoop]: Abstraction has 4016 states and 5569 transitions. [2025-03-09 00:36:41,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:36:41,676 INFO L276 IsEmpty]: Start isEmpty. Operand 4016 states and 5569 transitions. [2025-03-09 00:36:41,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-03-09 00:36:41,676 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:36:41,677 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:36:41,686 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-03-09 00:36:41,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:36:41,877 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr863REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-09 00:36:41,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:36:41,877 INFO L85 PathProgramCache]: Analyzing trace with hash -756582697, now seen corresponding path program 1 times [2025-03-09 00:36:41,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:36:41,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [994756597] [2025-03-09 00:36:41,878 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:36:41,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:36:41,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:36:41,879 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:36:41,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-09 00:36:42,012 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-09 00:36:42,032 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 00:36:42,032 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:36:42,032 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:36:42,035 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-09 00:36:42,037 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:36:42,051 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-09 00:36:42,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:36:42,114 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:36:42,114 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:36:42,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994756597] [2025-03-09 00:36:42,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994756597] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:36:42,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:36:42,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 00:36:42,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20427631] [2025-03-09 00:36:42,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:36:42,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:36:42,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:36:42,114 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:36:42,114 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:36:42,115 INFO L87 Difference]: Start difference. First operand 4016 states and 5569 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:36:45,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:36:45,993 INFO L93 Difference]: Finished difference Result 5474 states and 7375 transitions. [2025-03-09 00:36:45,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:36:45,993 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-03-09 00:36:45,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:36:45,998 INFO L225 Difference]: With dead ends: 5474 [2025-03-09 00:36:45,998 INFO L226 Difference]: Without dead ends: 5474 [2025-03-09 00:36:45,998 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:36:45,998 INFO L435 NwaCegarLoop]: 2571 mSDtfsCounter, 1424 mSDsluCounter, 2822 mSDsCounter, 0 mSdLazyCounter, 3044 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1428 SdHoareTripleChecker+Valid, 5393 SdHoareTripleChecker+Invalid, 3066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 3044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2025-03-09 00:36:45,998 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1428 Valid, 5393 Invalid, 3066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 3044 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2025-03-09 00:36:46,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5474 states. [2025-03-09 00:36:46,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5474 to 4130. [2025-03-09 00:36:46,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4130 states, 3145 states have (on average 1.7987281399046104) internal successors, (5657), 4105 states have internal predecessors, (5657), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-09 00:36:46,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4130 states to 4130 states and 5707 transitions. [2025-03-09 00:36:46,055 INFO L78 Accepts]: Start accepts. Automaton has 4130 states and 5707 transitions. Word has length 19 [2025-03-09 00:36:46,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:36:46,055 INFO L471 AbstractCegarLoop]: Abstraction has 4130 states and 5707 transitions. [2025-03-09 00:36:46,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:36:46,055 INFO L276 IsEmpty]: Start isEmpty. Operand 4130 states and 5707 transitions. [2025-03-09 00:36:46,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-03-09 00:36:46,056 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:36:46,056 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:36:46,064 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-03-09 00:36:46,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:36:46,257 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1171REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-09 00:36:46,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:36:46,257 INFO L85 PathProgramCache]: Analyzing trace with hash 2143448273, now seen corresponding path program 1 times [2025-03-09 00:36:46,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:36:46,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [698306007] [2025-03-09 00:36:46,258 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:36:46,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:36:46,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:36:46,260 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:36:46,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-09 00:36:46,399 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-03-09 00:36:46,443 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-03-09 00:36:46,443 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:36:46,443 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:36:46,450 INFO L256 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-09 00:36:46,453 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:36:46,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-09 00:36:46,585 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:36:46,585 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 00:36:46,863 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:36:46,863 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:36:46,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698306007] [2025-03-09 00:36:46,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [698306007] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 00:36:46,863 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-09 00:36:46,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2025-03-09 00:36:46,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272553137] [2025-03-09 00:36:46,863 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-09 00:36:46,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-09 00:36:46,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:36:46,864 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-09 00:36:46,864 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-09 00:36:46,864 INFO L87 Difference]: Start difference. First operand 4130 states and 5707 transitions. Second operand has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:36:57,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:36:57,897 INFO L93 Difference]: Finished difference Result 5882 states and 7945 transitions. [2025-03-09 00:36:57,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-09 00:36:57,898 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2025-03-09 00:36:57,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:36:57,903 INFO L225 Difference]: With dead ends: 5882 [2025-03-09 00:36:57,903 INFO L226 Difference]: Without dead ends: 5882 [2025-03-09 00:36:57,903 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2025-03-09 00:36:57,903 INFO L435 NwaCegarLoop]: 2565 mSDtfsCounter, 2214 mSDsluCounter, 5719 mSDsCounter, 0 mSdLazyCounter, 5621 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2220 SdHoareTripleChecker+Valid, 8284 SdHoareTripleChecker+Invalid, 5649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 5621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2025-03-09 00:36:57,904 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2220 Valid, 8284 Invalid, 5649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 5621 Invalid, 0 Unknown, 0 Unchecked, 10.8s Time] [2025-03-09 00:36:57,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5882 states. [2025-03-09 00:36:57,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5882 to 4294. [2025-03-09 00:36:57,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4294 states, 3309 states have (on average 1.7796917497733453) internal successors, (5889), 4269 states have internal predecessors, (5889), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-09 00:36:57,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4294 states to 4294 states and 5939 transitions. [2025-03-09 00:36:57,942 INFO L78 Accepts]: Start accepts. Automaton has 4294 states and 5939 transitions. Word has length 38 [2025-03-09 00:36:57,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:36:57,942 INFO L471 AbstractCegarLoop]: Abstraction has 4294 states and 5939 transitions. [2025-03-09 00:36:57,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:36:57,942 INFO L276 IsEmpty]: Start isEmpty. Operand 4294 states and 5939 transitions. [2025-03-09 00:36:57,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-03-09 00:36:57,943 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:36:57,943 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:36:57,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-03-09 00:36:58,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:36:58,144 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr863REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-09 00:36:58,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:36:58,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1068678835, now seen corresponding path program 1 times [2025-03-09 00:36:58,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:36:58,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1714510700] [2025-03-09 00:36:58,145 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:36:58,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:36:58,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:36:58,148 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:36:58,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-09 00:36:58,305 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-03-09 00:36:58,355 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-03-09 00:36:58,355 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:36:58,355 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:36:58,363 INFO L256 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-09 00:36:58,365 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:36:58,373 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-09 00:36:58,523 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:36:58,523 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 00:36:58,835 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:36:58,835 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:36:58,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714510700] [2025-03-09 00:36:58,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714510700] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 00:36:58,836 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-09 00:36:58,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2025-03-09 00:36:58,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114166548] [2025-03-09 00:36:58,836 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-09 00:36:58,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-09 00:36:58,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:36:58,836 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-09 00:36:58,837 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-09 00:36:58,837 INFO L87 Difference]: Start difference. First operand 4294 states and 5939 transitions. Second operand has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:37:08,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:37:08,647 INFO L93 Difference]: Finished difference Result 6046 states and 8177 transitions. [2025-03-09 00:37:08,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-09 00:37:08,648 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2025-03-09 00:37:08,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:37:08,652 INFO L225 Difference]: With dead ends: 6046 [2025-03-09 00:37:08,653 INFO L226 Difference]: Without dead ends: 6046 [2025-03-09 00:37:08,653 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2025-03-09 00:37:08,653 INFO L435 NwaCegarLoop]: 2572 mSDtfsCounter, 2174 mSDsluCounter, 5717 mSDsCounter, 0 mSdLazyCounter, 5639 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2180 SdHoareTripleChecker+Valid, 8289 SdHoareTripleChecker+Invalid, 5668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 5639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2025-03-09 00:37:08,653 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2180 Valid, 8289 Invalid, 5668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 5639 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time] [2025-03-09 00:37:08,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6046 states. [2025-03-09 00:37:08,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6046 to 4458. [2025-03-09 00:37:08,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4458 states, 3473 states have (on average 1.7624532104808524) internal successors, (6121), 4433 states have internal predecessors, (6121), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-09 00:37:08,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4458 states to 4458 states and 6171 transitions. [2025-03-09 00:37:08,694 INFO L78 Accepts]: Start accepts. Automaton has 4458 states and 6171 transitions. Word has length 38 [2025-03-09 00:37:08,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:37:08,695 INFO L471 AbstractCegarLoop]: Abstraction has 4458 states and 6171 transitions. [2025-03-09 00:37:08,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:37:08,695 INFO L276 IsEmpty]: Start isEmpty. Operand 4458 states and 6171 transitions. [2025-03-09 00:37:08,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-03-09 00:37:08,696 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:37:08,696 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:37:08,706 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-03-09 00:37:08,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:37:08,897 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr502REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-09 00:37:08,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:37:08,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1642370794, now seen corresponding path program 1 times [2025-03-09 00:37:08,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:37:08,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1044059016] [2025-03-09 00:37:08,899 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:37:08,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:37:08,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:37:08,901 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:37:08,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-03-09 00:37:09,047 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-03-09 00:37:09,072 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-03-09 00:37:09,072 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:37:09,072 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:37:09,076 INFO L256 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 00:37:09,077 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:37:09,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:37:09,193 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:37:09,193 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:37:09,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044059016] [2025-03-09 00:37:09,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1044059016] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:37:09,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:37:09,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 00:37:09,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669896256] [2025-03-09 00:37:09,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:37:09,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 00:37:09,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:37:09,194 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 00:37:09,194 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:37:09,194 INFO L87 Difference]: Start difference. First operand 4458 states and 6171 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:37:09,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:37:09,382 INFO L93 Difference]: Finished difference Result 6650 states and 8890 transitions. [2025-03-09 00:37:09,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 00:37:09,382 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2025-03-09 00:37:09,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:37:09,387 INFO L225 Difference]: With dead ends: 6650 [2025-03-09 00:37:09,388 INFO L226 Difference]: Without dead ends: 6650 [2025-03-09 00:37:09,388 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:37:09,388 INFO L435 NwaCegarLoop]: 2399 mSDtfsCounter, 1612 mSDsluCounter, 2228 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1619 SdHoareTripleChecker+Valid, 4627 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-09 00:37:09,388 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1619 Valid, 4627 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-09 00:37:09,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6650 states. [2025-03-09 00:37:09,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6650 to 5829. [2025-03-09 00:37:09,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5829 states, 4837 states have (on average 1.7436427537729997) internal successors, (8434), 5794 states have internal predecessors, (8434), 35 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (35), 32 states have call predecessors, (35), 35 states have call successors, (35) [2025-03-09 00:37:09,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5829 states to 5829 states and 8504 transitions. [2025-03-09 00:37:09,437 INFO L78 Accepts]: Start accepts. Automaton has 5829 states and 8504 transitions. Word has length 39 [2025-03-09 00:37:09,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:37:09,437 INFO L471 AbstractCegarLoop]: Abstraction has 5829 states and 8504 transitions. [2025-03-09 00:37:09,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:37:09,437 INFO L276 IsEmpty]: Start isEmpty. Operand 5829 states and 8504 transitions. [2025-03-09 00:37:09,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2025-03-09 00:37:09,438 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:37:09,438 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:37:09,446 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-03-09 00:37:09,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:37:09,639 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-09 00:37:09,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:37:09,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1867561523, now seen corresponding path program 1 times [2025-03-09 00:37:09,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:37:09,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1938512166] [2025-03-09 00:37:09,639 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:37:09,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:37:09,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:37:09,641 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:37:09,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-03-09 00:37:09,786 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 50 statements into 1 equivalence classes. [2025-03-09 00:37:09,812 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 50 of 50 statements. [2025-03-09 00:37:09,812 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:37:09,812 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:37:09,814 INFO L256 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 00:37:09,816 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:37:09,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:37:09,841 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:37:09,841 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:37:09,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938512166] [2025-03-09 00:37:09,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938512166] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:37:09,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:37:09,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:37:09,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843872983] [2025-03-09 00:37:09,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:37:09,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:37:09,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:37:09,842 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:37:09,842 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:37:09,842 INFO L87 Difference]: Start difference. First operand 5829 states and 8504 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:37:09,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:37:09,884 INFO L93 Difference]: Finished difference Result 5811 states and 8470 transitions. [2025-03-09 00:37:09,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 00:37:09,884 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2025-03-09 00:37:09,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:37:09,889 INFO L225 Difference]: With dead ends: 5811 [2025-03-09 00:37:09,889 INFO L226 Difference]: Without dead ends: 5811 [2025-03-09 00:37:09,889 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:37:09,889 INFO L435 NwaCegarLoop]: 2311 mSDtfsCounter, 27 mSDsluCounter, 4585 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 6896 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-09 00:37:09,890 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 6896 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-09 00:37:09,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5811 states. [2025-03-09 00:37:09,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5811 to 5811. [2025-03-09 00:37:09,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5811 states, 4819 states have (on average 1.7431002282631252) internal successors, (8400), 5776 states have internal predecessors, (8400), 35 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (35), 32 states have call predecessors, (35), 35 states have call successors, (35) [2025-03-09 00:37:09,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5811 states to 5811 states and 8470 transitions. [2025-03-09 00:37:09,931 INFO L78 Accepts]: Start accepts. Automaton has 5811 states and 8470 transitions. Word has length 50 [2025-03-09 00:37:09,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:37:09,932 INFO L471 AbstractCegarLoop]: Abstraction has 5811 states and 8470 transitions. [2025-03-09 00:37:09,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:37:09,932 INFO L276 IsEmpty]: Start isEmpty. Operand 5811 states and 8470 transitions. [2025-03-09 00:37:09,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2025-03-09 00:37:09,932 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:37:09,932 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:37:09,940 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-03-09 00:37:10,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:37:10,133 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr810REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-09 00:37:10,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:37:10,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1212270441, now seen corresponding path program 1 times [2025-03-09 00:37:10,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:37:10,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1157212056] [2025-03-09 00:37:10,134 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:37:10,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:37:10,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:37:10,135 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:37:10,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-03-09 00:37:10,294 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 50 statements into 1 equivalence classes. [2025-03-09 00:37:10,333 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 50 of 50 statements. [2025-03-09 00:37:10,333 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:37:10,333 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:37:10,338 INFO L256 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 00:37:10,340 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:37:10,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:37:10,456 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:37:10,456 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:37:10,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157212056] [2025-03-09 00:37:10,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1157212056] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:37:10,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:37:10,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 00:37:10,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032537666] [2025-03-09 00:37:10,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:37:10,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 00:37:10,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:37:10,457 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 00:37:10,457 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:37:10,457 INFO L87 Difference]: Start difference. First operand 5811 states and 8470 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:37:10,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:37:10,574 INFO L93 Difference]: Finished difference Result 8193 states and 11522 transitions. [2025-03-09 00:37:10,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 00:37:10,574 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2025-03-09 00:37:10,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:37:10,582 INFO L225 Difference]: With dead ends: 8193 [2025-03-09 00:37:10,582 INFO L226 Difference]: Without dead ends: 8193 [2025-03-09 00:37:10,582 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:37:10,582 INFO L435 NwaCegarLoop]: 2407 mSDtfsCounter, 1503 mSDsluCounter, 2263 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1510 SdHoareTripleChecker+Valid, 4670 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-09 00:37:10,582 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1510 Valid, 4670 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-09 00:37:10,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8193 states. [2025-03-09 00:37:10,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8193 to 7379. [2025-03-09 00:37:10,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7379 states, 6378 states have (on average 1.7253057384760113) internal successors, (11004), 7332 states have internal predecessors, (11004), 47 states have call successors, (47), 3 states have call predecessors, (47), 3 states have return successors, (47), 44 states have call predecessors, (47), 47 states have call successors, (47) [2025-03-09 00:37:10,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7379 states to 7379 states and 11098 transitions. [2025-03-09 00:37:10,656 INFO L78 Accepts]: Start accepts. Automaton has 7379 states and 11098 transitions. Word has length 50 [2025-03-09 00:37:10,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:37:10,656 INFO L471 AbstractCegarLoop]: Abstraction has 7379 states and 11098 transitions. [2025-03-09 00:37:10,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:37:10,656 INFO L276 IsEmpty]: Start isEmpty. Operand 7379 states and 11098 transitions. [2025-03-09 00:37:10,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2025-03-09 00:37:10,657 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:37:10,657 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] [2025-03-09 00:37:10,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-03-09 00:37:10,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:37:10,857 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1089REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-09 00:37:10,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:37:10,858 INFO L85 PathProgramCache]: Analyzing trace with hash -871556419, now seen corresponding path program 1 times [2025-03-09 00:37:10,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:37:10,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2104064475] [2025-03-09 00:37:10,858 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:37:10,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:37:10,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:37:10,860 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:37:10,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-03-09 00:37:11,014 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 53 statements into 1 equivalence classes. [2025-03-09 00:37:11,063 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 53 of 53 statements. [2025-03-09 00:37:11,063 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:37:11,063 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:37:11,071 INFO L256 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 00:37:11,073 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:37:11,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:37:11,093 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:37:11,093 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:37:11,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104064475] [2025-03-09 00:37:11,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104064475] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:37:11,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:37:11,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:37:11,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913455274] [2025-03-09 00:37:11,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:37:11,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:37:11,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:37:11,094 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:37:11,094 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:37:11,094 INFO L87 Difference]: Start difference. First operand 7379 states and 11098 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:37:11,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:37:11,162 INFO L93 Difference]: Finished difference Result 6780 states and 10226 transitions. [2025-03-09 00:37:11,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 00:37:11,163 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2025-03-09 00:37:11,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:37:11,168 INFO L225 Difference]: With dead ends: 6780 [2025-03-09 00:37:11,168 INFO L226 Difference]: Without dead ends: 6780 [2025-03-09 00:37:11,168 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:37:11,169 INFO L435 NwaCegarLoop]: 2265 mSDtfsCounter, 56 mSDsluCounter, 4457 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 6722 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-09 00:37:11,169 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 6722 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-09 00:37:11,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6780 states. [2025-03-09 00:37:11,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6780 to 6776. [2025-03-09 00:37:11,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6776 states, 5798 states have (on average 1.7468092445670922) internal successors, (10128), 6729 states have internal predecessors, (10128), 47 states have call successors, (47), 3 states have call predecessors, (47), 3 states have return successors, (47), 44 states have call predecessors, (47), 47 states have call successors, (47) [2025-03-09 00:37:11,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6776 states to 6776 states and 10222 transitions. [2025-03-09 00:37:11,215 INFO L78 Accepts]: Start accepts. Automaton has 6776 states and 10222 transitions. Word has length 53 [2025-03-09 00:37:11,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:37:11,215 INFO L471 AbstractCegarLoop]: Abstraction has 6776 states and 10222 transitions. [2025-03-09 00:37:11,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:37:11,215 INFO L276 IsEmpty]: Start isEmpty. Operand 6776 states and 10222 transitions. [2025-03-09 00:37:11,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2025-03-09 00:37:11,216 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:37:11,216 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] [2025-03-09 00:37:11,224 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-03-09 00:37:11,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:37:11,416 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr781REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-09 00:37:11,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:37:11,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1631739170, now seen corresponding path program 1 times [2025-03-09 00:37:11,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:37:11,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1193145451] [2025-03-09 00:37:11,417 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:37:11,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:37:11,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:37:11,419 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:37:11,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-03-09 00:37:11,600 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 53 statements into 1 equivalence classes. [2025-03-09 00:37:11,646 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 53 of 53 statements. [2025-03-09 00:37:11,646 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:37:11,646 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:37:11,652 INFO L256 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 00:37:11,654 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:37:11,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:37:11,675 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:37:11,675 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:37:11,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193145451] [2025-03-09 00:37:11,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1193145451] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:37:11,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:37:11,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:37:11,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273784834] [2025-03-09 00:37:11,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:37:11,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:37:11,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:37:11,675 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:37:11,675 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:37:11,675 INFO L87 Difference]: Start difference. First operand 6776 states and 10222 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:37:11,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:37:11,744 INFO L93 Difference]: Finished difference Result 6158 states and 9218 transitions. [2025-03-09 00:37:11,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 00:37:11,745 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2025-03-09 00:37:11,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:37:11,750 INFO L225 Difference]: With dead ends: 6158 [2025-03-09 00:37:11,750 INFO L226 Difference]: Without dead ends: 6158 [2025-03-09 00:37:11,751 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:37:11,751 INFO L435 NwaCegarLoop]: 2230 mSDtfsCounter, 76 mSDsluCounter, 4367 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 6597 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-09 00:37:11,751 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 6597 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-09 00:37:11,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6158 states. [2025-03-09 00:37:11,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6158 to 6148. [2025-03-09 00:37:11,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6148 states, 5182 states have (on average 1.7587803936703976) internal successors, (9114), 6101 states have internal predecessors, (9114), 47 states have call successors, (47), 3 states have call predecessors, (47), 3 states have return successors, (47), 44 states have call predecessors, (47), 47 states have call successors, (47) [2025-03-09 00:37:11,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6148 states to 6148 states and 9208 transitions. [2025-03-09 00:37:11,795 INFO L78 Accepts]: Start accepts. Automaton has 6148 states and 9208 transitions. Word has length 53 [2025-03-09 00:37:11,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:37:11,795 INFO L471 AbstractCegarLoop]: Abstraction has 6148 states and 9208 transitions. [2025-03-09 00:37:11,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:37:11,796 INFO L276 IsEmpty]: Start isEmpty. Operand 6148 states and 9208 transitions. [2025-03-09 00:37:11,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2025-03-09 00:37:11,796 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:37:11,796 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] [2025-03-09 00:37:11,805 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-03-09 00:37:11,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:37:11,997 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-09 00:37:11,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:37:11,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1608287493, now seen corresponding path program 1 times [2025-03-09 00:37:11,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:37:11,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [834852694] [2025-03-09 00:37:11,997 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:37:11,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:37:11,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:37:11,999 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:37:12,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-03-09 00:37:12,138 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-03-09 00:37:12,169 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-03-09 00:37:12,169 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:37:12,169 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:37:12,173 INFO L256 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 00:37:12,175 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:37:12,178 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-09 00:37:12,178 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-09 00:37:12,178 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-09 00:37:12,180 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2025-03-09 00:37:12,207 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-09 00:37:12,207 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2025-03-09 00:37:12,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:37:12,245 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:37:12,245 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:37:12,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834852694] [2025-03-09 00:37:12,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834852694] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:37:12,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:37:12,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:37:12,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386088263] [2025-03-09 00:37:12,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:37:12,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:37:12,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:37:12,246 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:37:12,246 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:37:12,246 INFO L87 Difference]: Start difference. First operand 6148 states and 9208 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:37:12,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:37:12,678 INFO L93 Difference]: Finished difference Result 6996 states and 10212 transitions. [2025-03-09 00:37:12,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:37:12,679 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2025-03-09 00:37:12,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:37:12,685 INFO L225 Difference]: With dead ends: 6996 [2025-03-09 00:37:12,685 INFO L226 Difference]: Without dead ends: 6996 [2025-03-09 00:37:12,685 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:37:12,685 INFO L435 NwaCegarLoop]: 2449 mSDtfsCounter, 911 mSDsluCounter, 4567 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 917 SdHoareTripleChecker+Valid, 7016 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-09 00:37:12,685 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [917 Valid, 7016 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-09 00:37:12,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6996 states. [2025-03-09 00:37:12,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6996 to 6029. [2025-03-09 00:37:12,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6029 states, 5064 states have (on average 1.7648104265402844) internal successors, (8937), 5983 states have internal predecessors, (8937), 46 states have call successors, (46), 3 states have call predecessors, (46), 3 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2025-03-09 00:37:12,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6029 states to 6029 states and 9029 transitions. [2025-03-09 00:37:12,726 INFO L78 Accepts]: Start accepts. Automaton has 6029 states and 9029 transitions. Word has length 58 [2025-03-09 00:37:12,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:37:12,726 INFO L471 AbstractCegarLoop]: Abstraction has 6029 states and 9029 transitions. [2025-03-09 00:37:12,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:37:12,726 INFO L276 IsEmpty]: Start isEmpty. Operand 6029 states and 9029 transitions. [2025-03-09 00:37:12,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2025-03-09 00:37:12,727 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:37:12,727 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:37:12,735 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-03-09 00:37:12,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:37:12,927 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1089REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-09 00:37:12,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:37:12,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1118010507, now seen corresponding path program 1 times [2025-03-09 00:37:12,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:37:12,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [361848058] [2025-03-09 00:37:12,928 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:37:12,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:37:12,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:37:12,930 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:37:12,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-03-09 00:37:13,095 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 61 statements into 1 equivalence classes. [2025-03-09 00:37:13,157 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 61 of 61 statements. [2025-03-09 00:37:13,157 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:37:13,157 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:37:13,165 INFO L256 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-09 00:37:13,167 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:37:13,172 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-09 00:37:13,189 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-09 00:37:13,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-09 00:37:13,451 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-03-09 00:37:13,459 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-09 00:37:13,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-03-09 00:37:13,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:37:13,465 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:37:13,465 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:37:13,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361848058] [2025-03-09 00:37:13,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [361848058] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:37:13,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:37:13,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 00:37:13,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185307929] [2025-03-09 00:37:13,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:37:13,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:37:13,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:37:13,466 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:37:13,466 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:37:13,466 INFO L87 Difference]: Start difference. First operand 6029 states and 9029 transitions. Second operand has 4 states, 3 states have (on average 20.333333333333332) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:37:15,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:37:15,801 INFO L93 Difference]: Finished difference Result 5945 states and 8748 transitions. [2025-03-09 00:37:15,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:37:15,801 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 20.333333333333332) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2025-03-09 00:37:15,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:37:15,806 INFO L225 Difference]: With dead ends: 5945 [2025-03-09 00:37:15,806 INFO L226 Difference]: Without dead ends: 5945 [2025-03-09 00:37:15,806 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:37:15,806 INFO L435 NwaCegarLoop]: 1064 mSDtfsCounter, 1643 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 1634 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1653 SdHoareTripleChecker+Valid, 1423 SdHoareTripleChecker+Invalid, 1725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2025-03-09 00:37:15,806 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1653 Valid, 1423 Invalid, 1725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1634 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2025-03-09 00:37:15,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5945 states. [2025-03-09 00:37:15,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5945 to 5768. [2025-03-09 00:37:15,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5768 states, 4887 states have (on average 1.7037037037037037) internal successors, (8326), 5722 states have internal predecessors, (8326), 46 states have call successors, (46), 3 states have call predecessors, (46), 3 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2025-03-09 00:37:15,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5768 states to 5768 states and 8418 transitions. [2025-03-09 00:37:15,861 INFO L78 Accepts]: Start accepts. Automaton has 5768 states and 8418 transitions. Word has length 61 [2025-03-09 00:37:15,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:37:15,861 INFO L471 AbstractCegarLoop]: Abstraction has 5768 states and 8418 transitions. [2025-03-09 00:37:15,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 20.333333333333332) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:37:15,861 INFO L276 IsEmpty]: Start isEmpty. Operand 5768 states and 8418 transitions. [2025-03-09 00:37:15,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-03-09 00:37:15,862 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:37:15,862 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] [2025-03-09 00:37:15,872 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-03-09 00:37:16,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:37:16,062 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1082REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-09 00:37:16,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:37:16,063 INFO L85 PathProgramCache]: Analyzing trace with hash 444711809, now seen corresponding path program 1 times [2025-03-09 00:37:16,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:37:16,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1656057852] [2025-03-09 00:37:16,063 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:37:16,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:37:16,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:37:16,065 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:37:16,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-03-09 00:37:16,229 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-03-09 00:37:16,278 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-03-09 00:37:16,278 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:37:16,278 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:37:16,286 INFO L256 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-09 00:37:16,288 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:37:16,294 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-09 00:37:16,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-09 00:37:16,319 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-03-09 00:37:16,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:37:16,326 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:37:16,327 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:37:16,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656057852] [2025-03-09 00:37:16,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656057852] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:37:16,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:37:16,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:37:16,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886014115] [2025-03-09 00:37:16,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:37:16,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 00:37:16,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:37:16,327 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 00:37:16,327 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:37:16,327 INFO L87 Difference]: Start difference. First operand 5768 states and 8418 transitions. Second operand has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:37:19,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:37:19,047 INFO L93 Difference]: Finished difference Result 5767 states and 8415 transitions. [2025-03-09 00:37:19,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 00:37:19,050 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2025-03-09 00:37:19,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:37:19,054 INFO L225 Difference]: With dead ends: 5767 [2025-03-09 00:37:19,055 INFO L226 Difference]: Without dead ends: 5767 [2025-03-09 00:37:19,055 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-09 00:37:19,056 INFO L435 NwaCegarLoop]: 2156 mSDtfsCounter, 2 mSDsluCounter, 3592 mSDsCounter, 0 mSdLazyCounter, 2883 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 5748 SdHoareTripleChecker+Invalid, 2884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2025-03-09 00:37:19,056 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 5748 Invalid, 2884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2883 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2025-03-09 00:37:19,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5767 states. [2025-03-09 00:37:19,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5767 to 5767. [2025-03-09 00:37:19,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5767 states, 4887 states have (on average 1.7030898301616533) internal successors, (8323), 5721 states have internal predecessors, (8323), 46 states have call successors, (46), 3 states have call predecessors, (46), 3 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2025-03-09 00:37:19,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5767 states to 5767 states and 8415 transitions. [2025-03-09 00:37:19,095 INFO L78 Accepts]: Start accepts. Automaton has 5767 states and 8415 transitions. Word has length 66 [2025-03-09 00:37:19,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:37:19,095 INFO L471 AbstractCegarLoop]: Abstraction has 5767 states and 8415 transitions. [2025-03-09 00:37:19,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:37:19,095 INFO L276 IsEmpty]: Start isEmpty. Operand 5767 states and 8415 transitions. [2025-03-09 00:37:19,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-03-09 00:37:19,095 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:37:19,096 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] [2025-03-09 00:37:19,104 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2025-03-09 00:37:19,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:37:19,296 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1083REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-09 00:37:19,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:37:19,296 INFO L85 PathProgramCache]: Analyzing trace with hash 444711810, now seen corresponding path program 1 times [2025-03-09 00:37:19,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:37:19,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [789606591] [2025-03-09 00:37:19,297 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:37:19,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:37:19,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:37:19,298 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:37:19,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-03-09 00:37:19,452 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-03-09 00:37:19,504 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-03-09 00:37:19,504 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:37:19,504 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:37:19,512 INFO L256 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-09 00:37:19,514 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:37:19,519 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-09 00:37:19,531 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-09 00:37:19,536 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-03-09 00:37:19,563 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2025-03-09 00:37:19,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:37:19,576 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:37:19,576 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:37:19,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789606591] [2025-03-09 00:37:19,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789606591] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:37:19,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:37:19,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:37:19,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028288575] [2025-03-09 00:37:19,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:37:19,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 00:37:19,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:37:19,576 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 00:37:19,576 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:37:19,576 INFO L87 Difference]: Start difference. First operand 5767 states and 8415 transitions. Second operand has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:37:23,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:37:23,061 INFO L93 Difference]: Finished difference Result 5766 states and 8412 transitions. [2025-03-09 00:37:23,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 00:37:23,062 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2025-03-09 00:37:23,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:37:23,067 INFO L225 Difference]: With dead ends: 5766 [2025-03-09 00:37:23,067 INFO L226 Difference]: Without dead ends: 5766 [2025-03-09 00:37:23,067 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-09 00:37:23,067 INFO L435 NwaCegarLoop]: 2156 mSDtfsCounter, 1 mSDsluCounter, 3548 mSDsCounter, 0 mSdLazyCounter, 2924 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 5704 SdHoareTripleChecker+Invalid, 2925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2025-03-09 00:37:23,068 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 5704 Invalid, 2925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2924 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2025-03-09 00:37:23,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5766 states. [2025-03-09 00:37:23,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5766 to 5766. [2025-03-09 00:37:23,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5766 states, 4884 states have (on average 1.7035217035217036) internal successors, (8320), 5720 states have internal predecessors, (8320), 46 states have call successors, (46), 3 states have call predecessors, (46), 3 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2025-03-09 00:37:23,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5766 states to 5766 states and 8412 transitions. [2025-03-09 00:37:23,111 INFO L78 Accepts]: Start accepts. Automaton has 5766 states and 8412 transitions. Word has length 66 [2025-03-09 00:37:23,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:37:23,111 INFO L471 AbstractCegarLoop]: Abstraction has 5766 states and 8412 transitions. [2025-03-09 00:37:23,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:37:23,111 INFO L276 IsEmpty]: Start isEmpty. Operand 5766 states and 8412 transitions. [2025-03-09 00:37:23,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-03-09 00:37:23,112 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:37:23,112 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] [2025-03-09 00:37:23,121 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2025-03-09 00:37:23,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:37:23,312 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr774REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-09 00:37:23,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:37:23,313 INFO L85 PathProgramCache]: Analyzing trace with hash -2100762435, now seen corresponding path program 1 times [2025-03-09 00:37:23,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:37:23,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1546585822] [2025-03-09 00:37:23,313 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:37:23,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:37:23,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:37:23,315 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:37:23,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-03-09 00:37:23,479 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-03-09 00:37:23,533 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-03-09 00:37:23,533 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:37:23,533 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:37:23,540 INFO L256 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-09 00:37:23,542 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:37:23,545 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-09 00:37:23,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-09 00:37:23,567 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-03-09 00:37:23,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:37:23,572 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:37:23,572 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:37:23,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546585822] [2025-03-09 00:37:23,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546585822] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:37:23,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:37:23,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:37:23,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363447681] [2025-03-09 00:37:23,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:37:23,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 00:37:23,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:37:23,572 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 00:37:23,572 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:37:23,572 INFO L87 Difference]: Start difference. First operand 5766 states and 8412 transitions. Second operand has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:37:26,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:37:26,066 INFO L93 Difference]: Finished difference Result 5765 states and 8408 transitions. [2025-03-09 00:37:26,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 00:37:26,066 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2025-03-09 00:37:26,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:37:26,071 INFO L225 Difference]: With dead ends: 5765 [2025-03-09 00:37:26,071 INFO L226 Difference]: Without dead ends: 5765 [2025-03-09 00:37:26,071 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-09 00:37:26,072 INFO L435 NwaCegarLoop]: 2154 mSDtfsCounter, 2 mSDsluCounter, 3589 mSDsCounter, 0 mSdLazyCounter, 2880 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 5743 SdHoareTripleChecker+Invalid, 2881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2025-03-09 00:37:26,072 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 5743 Invalid, 2881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2880 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2025-03-09 00:37:26,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5765 states. [2025-03-09 00:37:26,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5765 to 5765. [2025-03-09 00:37:26,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5765 states, 4884 states have (on average 1.7027027027027026) internal successors, (8316), 5719 states have internal predecessors, (8316), 46 states have call successors, (46), 3 states have call predecessors, (46), 3 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2025-03-09 00:37:26,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5765 states to 5765 states and 8408 transitions. [2025-03-09 00:37:26,108 INFO L78 Accepts]: Start accepts. Automaton has 5765 states and 8408 transitions. Word has length 66 [2025-03-09 00:37:26,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:37:26,108 INFO L471 AbstractCegarLoop]: Abstraction has 5765 states and 8408 transitions. [2025-03-09 00:37:26,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:37:26,109 INFO L276 IsEmpty]: Start isEmpty. Operand 5765 states and 8408 transitions. [2025-03-09 00:37:26,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-03-09 00:37:26,109 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:37:26,109 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] [2025-03-09 00:37:26,118 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2025-03-09 00:37:26,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:37:26,310 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr775REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2025-03-09 00:37:26,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:37:26,310 INFO L85 PathProgramCache]: Analyzing trace with hash -2100762434, now seen corresponding path program 1 times [2025-03-09 00:37:26,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:37:26,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [182882021] [2025-03-09 00:37:26,310 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:37:26,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:37:26,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:37:26,312 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:37:26,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-03-09 00:37:26,473 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-03-09 00:37:26,525 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-03-09 00:37:26,525 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:37:26,525 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:37:26,533 INFO L256 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-09 00:37:26,537 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:37:26,542 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-09 00:37:26,558 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-09 00:37:26,561 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-03-09 00:37:26,588 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2025-03-09 00:37:26,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:37:26,599 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:37:26,599 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:37:26,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182882021] [2025-03-09 00:37:26,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [182882021] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:37:26,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:37:26,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:37:26,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739589770] [2025-03-09 00:37:26,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:37:26,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 00:37:26,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:37:26,600 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 00:37:26,600 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:37:26,600 INFO L87 Difference]: Start difference. First operand 5765 states and 8408 transitions. Second operand has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)