./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-2.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_OAT_test10-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 14558cb0aef5bf60b4a230892060936885d87372f6515d5d8ad78f7b805ad735 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 00:43:05,118 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 00:43:05,175 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-09 00:43:05,178 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 00:43:05,179 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 00:43:05,202 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 00:43:05,202 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 00:43:05,202 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 00:43:05,202 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 00:43:05,203 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 00:43:05,203 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 00:43:05,203 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 00:43:05,203 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 00:43:05,203 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 00:43:05,203 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 00:43:05,203 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 00:43:05,203 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 00:43:05,203 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 00:43:05,203 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 00:43:05,203 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 00:43:05,203 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-09 00:43:05,203 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-09 00:43:05,203 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-09 00:43:05,203 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 00:43:05,203 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-09 00:43:05,203 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 00:43:05,204 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 00:43:05,204 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 00:43:05,204 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 00:43:05,204 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 00:43:05,204 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 00:43:05,204 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 00:43:05,204 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 00:43:05,204 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 00:43:05,204 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 00:43:05,204 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 00:43:05,204 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 00:43:05,204 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 00:43:05,204 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 00:43:05,204 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 00:43:05,204 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 00:43:05,204 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 00:43:05,204 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 -> 14558cb0aef5bf60b4a230892060936885d87372f6515d5d8ad78f7b805ad735 [2025-03-09 00:43:05,445 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 00:43:05,454 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 00:43:05,456 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 00:43:05,459 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 00:43:05,460 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 00:43:05,461 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-2.i [2025-03-09 00:43:06,739 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f89b67f2/16e7592762fd4b6ab2733214e858abb3/FLAGe3759b5ac [2025-03-09 00:43:07,157 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 00:43:07,157 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-2.i [2025-03-09 00:43:07,178 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f89b67f2/16e7592762fd4b6ab2733214e858abb3/FLAGe3759b5ac [2025-03-09 00:43:07,301 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f89b67f2/16e7592762fd4b6ab2733214e858abb3 [2025-03-09 00:43:07,304 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 00:43:07,305 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 00:43:07,307 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 00:43:07,307 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 00:43:07,312 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 00:43:07,313 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 12:43:07" (1/1) ... [2025-03-09 00:43:07,314 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b56da9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:43:07, skipping insertion in model container [2025-03-09 00:43:07,314 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 12:43:07" (1/1) ... [2025-03-09 00:43:07,361 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 00:43:07,740 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:43:07,763 WARN 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 00:43:07,768 WARN 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 00:43:07,771 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:43:07,777 WARN 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 00:43:07,806 WARN 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 00:43:07,808 WARN 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 00:43:07,809 WARN 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 00:43:07,813 WARN 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 00:43:07,832 WARN 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 00:43:07,833 WARN 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 00:43:07,835 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:43:07,835 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:43:07,850 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:43:07,854 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:43:07,856 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:43:07,856 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:43:07,868 WARN 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 00:43:07,868 WARN 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 00:43:07,870 WARN 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 00:43:07,870 WARN 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 00:43:07,888 WARN 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 00:43:07,888 WARN 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 00:43:07,889 WARN 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 00:43:07,889 WARN 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 00:43:07,890 WARN 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 00:43:07,894 WARN 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 00:43:07,895 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 00:43:07,895 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 00:43:07,896 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 00:43:07,898 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 00:43:07,912 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 00:43:07,927 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 00:43:07,927 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@76c53aee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:43:07, skipping insertion in model container [2025-03-09 00:43:07,927 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 00:43:07,929 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-03-09 00:43:07,931 INFO L158 Benchmark]: Toolchain (without parser) took 624.54ms. Allocated memory is still 167.8MB. Free memory was 120.5MB in the beginning and 92.1MB in the end (delta: 28.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-03-09 00:43:07,931 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 201.3MB. Free memory is still 116.0MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 00:43:07,931 INFO L158 Benchmark]: CACSL2BoogieTranslator took 622.04ms. Allocated memory is still 167.8MB. Free memory was 120.5MB in the beginning and 92.1MB in the end (delta: 28.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-03-09 00:43:07,932 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 201.3MB. Free memory is still 116.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 622.04ms. Allocated memory is still 167.8MB. Free memory was 120.5MB in the beginning and 92.1MB in the end (delta: 28.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 757]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 14558cb0aef5bf60b4a230892060936885d87372f6515d5d8ad78f7b805ad735 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 00:43:09,817 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 00:43:09,909 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-03-09 00:43:09,915 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 00:43:09,915 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 00:43:09,937 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 00:43:09,938 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 00:43:09,938 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 00:43:09,938 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 00:43:09,939 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 00:43:09,939 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 00:43:09,939 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 00:43:09,940 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 00:43:09,940 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 00:43:09,940 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 00:43:09,940 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 00:43:09,941 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 00:43:09,941 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 00:43:09,941 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 00:43:09,941 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 00:43:09,941 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-09 00:43:09,941 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-09 00:43:09,941 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-09 00:43:09,941 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 00:43:09,942 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-09 00:43:09,942 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-09 00:43:09,942 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-09 00:43:09,942 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 00:43:09,942 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 00:43:09,942 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 00:43:09,942 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 00:43:09,943 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 00:43:09,943 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 00:43:09,943 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 00:43:09,943 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 00:43:09,943 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 00:43:09,943 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 00:43:09,943 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 00:43:09,943 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-09 00:43:09,943 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-09 00:43:09,944 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 00:43:09,944 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 00:43:09,944 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 00:43:09,944 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 00:43:09,944 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 -> 14558cb0aef5bf60b4a230892060936885d87372f6515d5d8ad78f7b805ad735 [2025-03-09 00:43:10,203 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 00:43:10,211 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 00:43:10,213 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 00:43:10,214 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 00:43:10,214 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 00:43:10,216 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-2.i [2025-03-09 00:43:11,417 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c471ad18/c88129bd49b2434ebfec25aaf4c0e0f6/FLAGf8912a8e9 [2025-03-09 00:43:11,711 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 00:43:11,712 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-2.i [2025-03-09 00:43:11,727 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c471ad18/c88129bd49b2434ebfec25aaf4c0e0f6/FLAGf8912a8e9 [2025-03-09 00:43:11,742 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c471ad18/c88129bd49b2434ebfec25aaf4c0e0f6 [2025-03-09 00:43:11,744 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 00:43:11,745 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 00:43:11,746 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 00:43:11,746 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 00:43:11,751 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 00:43:11,751 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 12:43:11" (1/1) ... [2025-03-09 00:43:11,752 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f95bd61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:43:11, skipping insertion in model container [2025-03-09 00:43:11,752 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 12:43:11" (1/1) ... [2025-03-09 00:43:11,800 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 00:43:12,047 WARN 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 00:43:12,078 WARN 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 00:43:12,081 WARN 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 00:43:12,088 WARN 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 00:43:12,097 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:43:12,129 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:43:12,132 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:43:12,135 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:43:12,141 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:43:12,167 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:43:12,169 WARN 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 00:43:12,172 WARN 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 00:43:12,172 WARN 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 00:43:12,188 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:43:12,188 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:43:12,189 WARN 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 00:43:12,189 WARN 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 00:43:12,204 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:43:12,205 WARN 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 00:43:12,208 WARN 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 00:43:12,209 WARN 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 00:43:12,220 WARN 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 00:43:12,220 WARN 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 00:43:12,222 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:43:12,225 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:43:12,227 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:43:12,228 WARN 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 00:43:12,229 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:43:12,230 WARN 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 00:43:12,230 WARN 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 00:43:12,232 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:43:12,246 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 00:43:12,259 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-03-09 00:43:12,272 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 00:43:12,296 WARN 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 00:43:12,310 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:43:12,315 WARN 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 00:43:12,316 WARN 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 00:43:12,320 WARN 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 00:43:12,335 WARN 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 00:43:12,337 WARN 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 00:43:12,339 WARN 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 00:43:12,341 WARN 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 00:43:12,355 WARN 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 00:43:12,356 WARN 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 00:43:12,357 WARN 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 00:43:12,357 WARN 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 00:43:12,364 WARN 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 00:43:12,364 WARN 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 00:43:12,365 WARN 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 00:43:12,368 WARN 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 00:43:12,375 WARN 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 00:43:12,376 WARN 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 00:43:12,377 WARN 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 00:43:12,378 WARN 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 00:43:12,385 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:43:12,385 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:43:12,386 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:43:12,387 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:43:12,387 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:43:12,389 WARN 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 00:43:12,390 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:43:12,390 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:43:12,390 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:43:12,392 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:43:12,398 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 00:43:12,403 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 00:43:12,510 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 00:43:12,536 INFO L204 MainTranslator]: Completed translation [2025-03-09 00:43:12,537 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:43:12 WrapperNode [2025-03-09 00:43:12,537 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 00:43:12,538 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 00:43:12,538 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 00:43:12,538 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 00:43:12,542 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:43:12" (1/1) ... [2025-03-09 00:43:12,577 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:43:12" (1/1) ... [2025-03-09 00:43:12,639 INFO L138 Inliner]: procedures = 180, calls = 558, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2327 [2025-03-09 00:43:12,639 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 00:43:12,640 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 00:43:12,640 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 00:43:12,640 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 00:43:12,647 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:43:12" (1/1) ... [2025-03-09 00:43:12,648 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:43:12" (1/1) ... [2025-03-09 00:43:12,670 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:43:12" (1/1) ... [2025-03-09 00:43:12,844 INFO L175 MemorySlicer]: Split 528 memory accesses to 3 slices as follows [2, 420, 106]. 80 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 94 writes are split as follows [0, 90, 4]. [2025-03-09 00:43:12,844 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:43:12" (1/1) ... [2025-03-09 00:43:12,844 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:43:12" (1/1) ... [2025-03-09 00:43:12,902 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:43:12" (1/1) ... [2025-03-09 00:43:12,910 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:43:12" (1/1) ... [2025-03-09 00:43:12,920 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:43:12" (1/1) ... [2025-03-09 00:43:12,926 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:43:12" (1/1) ... [2025-03-09 00:43:12,938 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 00:43:12,939 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 00:43:12,939 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 00:43:12,939 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 00:43:12,940 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:43:12" (1/1) ... [2025-03-09 00:43:12,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 00:43:12,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:43:12,966 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 00:43:12,969 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 00:43:12,987 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2025-03-09 00:43:12,987 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2025-03-09 00:43:12,988 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2025-03-09 00:43:12,988 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2025-03-09 00:43:12,988 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2025-03-09 00:43:12,988 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-03-09 00:43:12,988 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-03-09 00:43:12,988 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2025-03-09 00:43:12,988 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-09 00:43:12,988 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-09 00:43:12,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-03-09 00:43:12,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-03-09 00:43:12,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2025-03-09 00:43:12,988 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-03-09 00:43:12,988 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-03-09 00:43:12,988 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2025-03-09 00:43:12,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-09 00:43:12,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 00:43:12,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-09 00:43:12,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-09 00:43:12,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-09 00:43:12,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-09 00:43:12,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-09 00:43:12,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-09 00:43:12,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-09 00:43:12,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-09 00:43:12,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-03-09 00:43:12,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-03-09 00:43:12,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2025-03-09 00:43:12,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-09 00:43:12,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-03-09 00:43:12,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2025-03-09 00:43:12,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 00:43:12,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 00:43:13,200 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 00:43:13,202 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 00:43:19,556 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 00:43:19,694 INFO L? ?]: Removed 2231 outVars from TransFormulas that were not future-live. [2025-03-09 00:43:19,695 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 00:43:19,756 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 00:43:19,756 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 00:43:19,757 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 12:43:19 BoogieIcfgContainer [2025-03-09 00:43:19,757 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 00:43:19,759 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 00:43:19,759 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 00:43:19,766 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 00:43:19,766 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 12:43:11" (1/3) ... [2025-03-09 00:43:19,767 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19c774fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 12:43:19, skipping insertion in model container [2025-03-09 00:43:19,767 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:43:12" (2/3) ... [2025-03-09 00:43:19,767 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19c774fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 12:43:19, skipping insertion in model container [2025-03-09 00:43:19,767 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 12:43:19" (3/3) ... [2025-03-09 00:43:19,768 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test10-2.i [2025-03-09 00:43:19,781 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 00:43:19,783 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_OAT_test10-2.i that has 6 procedures, 2271 locations, 1 initial locations, 83 loop locations, and 1091 error locations. [2025-03-09 00:43:19,841 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 00:43:19,855 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;@401b5a0c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 00:43:19,855 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1091 error locations. [2025-03-09 00:43:19,864 INFO L276 IsEmpty]: Start isEmpty. Operand has 2261 states, 1158 states have (on average 2.192573402417962) internal successors, (2539), 2247 states have internal predecessors, (2539), 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 00:43:19,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-03-09 00:43:19,870 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:43:19,870 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-03-09 00:43:19,871 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1088REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-03-09 00:43:19,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:43:19,876 INFO L85 PathProgramCache]: Analyzing trace with hash 2577795, now seen corresponding path program 1 times [2025-03-09 00:43:19,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:43:19,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1841770804] [2025-03-09 00:43:19,883 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:43:19,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:43:19,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:43:19,887 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 00:43:19,888 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 00:43:20,074 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-09 00:43:20,079 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-09 00:43:20,079 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:43:20,079 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:43:20,082 INFO L256 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 00:43:20,086 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:43:20,118 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 00:43:20,140 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 00:43:20,141 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:43:20,141 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:43:20,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841770804] [2025-03-09 00:43:20,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841770804] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:43:20,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:43:20,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 00:43:20,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015794587] [2025-03-09 00:43:20,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:43:20,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 00:43:20,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:43:20,161 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 00:43:20,162 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:43:20,166 INFO L87 Difference]: Start difference. First operand has 2261 states, 1158 states have (on average 2.192573402417962) internal successors, (2539), 2247 states have internal predecessors, (2539), 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 00:43:23,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:43:23,091 INFO L93 Difference]: Finished difference Result 2921 states and 3105 transitions. [2025-03-09 00:43:23,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 00:43:23,092 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 00:43:23,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:43:23,108 INFO L225 Difference]: With dead ends: 2921 [2025-03-09 00:43:23,109 INFO L226 Difference]: Without dead ends: 2919 [2025-03-09 00:43:23,110 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 00:43:23,111 INFO L435 NwaCegarLoop]: 1385 mSDtfsCounter, 2127 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 1476 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2137 SdHoareTripleChecker+Valid, 1859 SdHoareTripleChecker+Invalid, 1501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2025-03-09 00:43:23,112 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2137 Valid, 1859 Invalid, 1501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1476 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2025-03-09 00:43:23,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2919 states. [2025-03-09 00:43:23,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2919 to 2403. [2025-03-09 00:43:23,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2403 states, 1328 states have (on average 2.036144578313253) internal successors, (2704), 2387 states have internal predecessors, (2704), 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 00:43:23,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2403 states to 2403 states and 2736 transitions. [2025-03-09 00:43:23,206 INFO L78 Accepts]: Start accepts. Automaton has 2403 states and 2736 transitions. Word has length 3 [2025-03-09 00:43:23,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:43:23,208 INFO L471 AbstractCegarLoop]: Abstraction has 2403 states and 2736 transitions. [2025-03-09 00:43:23,208 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 00:43:23,208 INFO L276 IsEmpty]: Start isEmpty. Operand 2403 states and 2736 transitions. [2025-03-09 00:43:23,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-03-09 00:43:23,209 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:43:23,209 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-03-09 00:43:23,216 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 00:43:23,410 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 00:43:23,410 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1089REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-03-09 00:43:23,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:43:23,410 INFO L85 PathProgramCache]: Analyzing trace with hash 2577796, now seen corresponding path program 1 times [2025-03-09 00:43:23,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:43:23,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [847381887] [2025-03-09 00:43:23,411 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:43:23,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:43:23,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:43:23,416 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 00:43:23,417 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 00:43:23,538 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-09 00:43:23,542 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-09 00:43:23,542 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:43:23,542 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:43:23,543 INFO L256 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 00:43:23,544 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:43:23,550 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 00:43:23,559 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 00:43:23,559 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:43:23,559 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:43:23,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847381887] [2025-03-09 00:43:23,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847381887] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:43:23,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:43:23,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 00:43:23,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774448680] [2025-03-09 00:43:23,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:43:23,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 00:43:23,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:43:23,562 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 00:43:23,562 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:43:23,562 INFO L87 Difference]: Start difference. First operand 2403 states and 2736 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 00:43:27,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:43:27,144 INFO L93 Difference]: Finished difference Result 3196 states and 3609 transitions. [2025-03-09 00:43:27,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 00:43:27,145 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 00:43:27,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:43:27,152 INFO L225 Difference]: With dead ends: 3196 [2025-03-09 00:43:27,152 INFO L226 Difference]: Without dead ends: 3196 [2025-03-09 00:43:27,153 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 00:43:27,153 INFO L435 NwaCegarLoop]: 2023 mSDtfsCounter, 867 mSDsluCounter, 1292 mSDsCounter, 0 mSdLazyCounter, 1427 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 870 SdHoareTripleChecker+Valid, 3315 SdHoareTripleChecker+Invalid, 1438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2025-03-09 00:43:27,153 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [870 Valid, 3315 Invalid, 1438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1427 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2025-03-09 00:43:27,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3196 states. [2025-03-09 00:43:27,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3196 to 2868. [2025-03-09 00:43:27,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2868 states, 1791 states have (on average 1.993858179787828) internal successors, (3571), 2849 states have internal predecessors, (3571), 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 00:43:27,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2868 states to 2868 states and 3609 transitions. [2025-03-09 00:43:27,193 INFO L78 Accepts]: Start accepts. Automaton has 2868 states and 3609 transitions. Word has length 3 [2025-03-09 00:43:27,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:43:27,194 INFO L471 AbstractCegarLoop]: Abstraction has 2868 states and 3609 transitions. [2025-03-09 00:43:27,194 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 00:43:27,194 INFO L276 IsEmpty]: Start isEmpty. Operand 2868 states and 3609 transitions. [2025-03-09 00:43:27,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-03-09 00:43:27,194 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:43:27,194 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:43:27,200 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 00:43:27,398 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 00:43:27,398 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1085REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-03-09 00:43:27,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:43:27,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1313755039, now seen corresponding path program 1 times [2025-03-09 00:43:27,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:43:27,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1030367278] [2025-03-09 00:43:27,399 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:43:27,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:43:27,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:43:27,401 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 00:43:27,402 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 00:43:27,535 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 00:43:27,544 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 00:43:27,544 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:43:27,544 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:43:27,545 INFO L256 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-09 00:43:27,547 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:43:27,553 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-09 00:43:27,595 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2025-03-09 00:43:27,595 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2025-03-09 00:43:27,664 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 00:43:27,664 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:43:27,664 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:43:27,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030367278] [2025-03-09 00:43:27,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1030367278] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:43:27,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:43:27,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 00:43:27,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092080218] [2025-03-09 00:43:27,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:43:27,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:43:27,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:43:27,665 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:43:27,665 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:43:27,665 INFO L87 Difference]: Start difference. First operand 2868 states and 3609 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 00:43:33,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:43:33,477 INFO L93 Difference]: Finished difference Result 4542 states and 5068 transitions. [2025-03-09 00:43:33,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:43:33,477 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 00:43:33,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:43:33,488 INFO L225 Difference]: With dead ends: 4542 [2025-03-09 00:43:33,488 INFO L226 Difference]: Without dead ends: 4542 [2025-03-09 00:43:33,491 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:43:33,491 INFO L435 NwaCegarLoop]: 2283 mSDtfsCounter, 2311 mSDsluCounter, 2578 mSDsCounter, 0 mSdLazyCounter, 3136 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2317 SdHoareTripleChecker+Valid, 4861 SdHoareTripleChecker+Invalid, 3153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 3136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2025-03-09 00:43:33,491 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2317 Valid, 4861 Invalid, 3153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 3136 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2025-03-09 00:43:33,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4542 states. [2025-03-09 00:43:33,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4542 to 3150. [2025-03-09 00:43:33,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3150 states, 2073 states have (on average 1.990352146647371) internal successors, (4126), 3131 states have internal predecessors, (4126), 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 00:43:33,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3150 states to 3150 states and 4164 transitions. [2025-03-09 00:43:33,545 INFO L78 Accepts]: Start accepts. Automaton has 3150 states and 4164 transitions. Word has length 7 [2025-03-09 00:43:33,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:43:33,546 INFO L471 AbstractCegarLoop]: Abstraction has 3150 states and 4164 transitions. [2025-03-09 00:43:33,547 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 00:43:33,547 INFO L276 IsEmpty]: Start isEmpty. Operand 3150 states and 4164 transitions. [2025-03-09 00:43:33,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-03-09 00:43:33,548 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:43:33,548 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:43:33,554 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 00:43:33,748 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 00:43:33,748 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1082REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-03-09 00:43:33,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:43:33,749 INFO L85 PathProgramCache]: Analyzing trace with hash 2071703030, now seen corresponding path program 1 times [2025-03-09 00:43:33,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:43:33,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1966611335] [2025-03-09 00:43:33,749 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:43:33,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:43:33,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:43:33,751 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 00:43:33,752 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 00:43:33,866 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 00:43:33,877 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 00:43:33,878 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:43:33,878 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:43:33,880 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 00:43:33,881 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:43:33,886 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 00:43:33,894 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 00:43:33,894 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:43:33,894 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:43:33,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966611335] [2025-03-09 00:43:33,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1966611335] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:43:33,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:43:33,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 00:43:33,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610853004] [2025-03-09 00:43:33,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:43:33,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 00:43:33,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:43:33,895 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 00:43:33,895 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:43:33,895 INFO L87 Difference]: Start difference. First operand 3150 states and 4164 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 00:43:36,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:43:36,135 INFO L93 Difference]: Finished difference Result 3854 states and 4907 transitions. [2025-03-09 00:43:36,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 00:43:36,135 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 00:43:36,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:43:36,144 INFO L225 Difference]: With dead ends: 3854 [2025-03-09 00:43:36,144 INFO L226 Difference]: Without dead ends: 3854 [2025-03-09 00:43:36,144 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 00:43:36,145 INFO L435 NwaCegarLoop]: 2201 mSDtfsCounter, 1906 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 1517 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1916 SdHoareTripleChecker+Valid, 2869 SdHoareTripleChecker+Invalid, 1616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2025-03-09 00:43:36,145 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1916 Valid, 2869 Invalid, 1616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1517 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2025-03-09 00:43:36,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3854 states. [2025-03-09 00:43:36,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3854 to 3058. [2025-03-09 00:43:36,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3058 states, 2073 states have (on average 1.9257115291847564) internal successors, (3992), 3039 states have internal predecessors, (3992), 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 00:43:36,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3058 states to 3058 states and 4030 transitions. [2025-03-09 00:43:36,197 INFO L78 Accepts]: Start accepts. Automaton has 3058 states and 4030 transitions. Word has length 8 [2025-03-09 00:43:36,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:43:36,198 INFO L471 AbstractCegarLoop]: Abstraction has 3058 states and 4030 transitions. [2025-03-09 00:43:36,198 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 00:43:36,198 INFO L276 IsEmpty]: Start isEmpty. Operand 3058 states and 4030 transitions. [2025-03-09 00:43:36,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-03-09 00:43:36,198 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:43:36,198 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:43:36,205 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-09 00:43:36,398 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 00:43:36,399 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1083REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-03-09 00:43:36,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:43:36,399 INFO L85 PathProgramCache]: Analyzing trace with hash 2071703031, now seen corresponding path program 1 times [2025-03-09 00:43:36,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:43:36,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1658556392] [2025-03-09 00:43:36,400 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:43:36,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:43:36,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:43:36,402 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 00:43:36,404 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 00:43:36,528 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 00:43:36,537 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 00:43:36,538 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:43:36,538 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:43:36,541 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 00:43:36,542 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:43:36,550 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 00:43:36,572 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 00:43:36,573 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:43:36,573 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:43:36,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658556392] [2025-03-09 00:43:36,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658556392] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:43:36,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:43:36,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 00:43:36,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120832385] [2025-03-09 00:43:36,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:43:36,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 00:43:36,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:43:36,574 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 00:43:36,574 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:43:36,574 INFO L87 Difference]: Start difference. First operand 3058 states and 4030 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 00:43:39,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:43:39,950 INFO L93 Difference]: Finished difference Result 4652 states and 6112 transitions. [2025-03-09 00:43:39,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 00:43:39,950 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 00:43:39,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:43:39,960 INFO L225 Difference]: With dead ends: 4652 [2025-03-09 00:43:39,960 INFO L226 Difference]: Without dead ends: 4652 [2025-03-09 00:43:39,960 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 00:43:39,960 INFO L435 NwaCegarLoop]: 2553 mSDtfsCounter, 1411 mSDsluCounter, 1094 mSDsCounter, 0 mSdLazyCounter, 1592 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1415 SdHoareTripleChecker+Valid, 3647 SdHoareTripleChecker+Invalid, 1617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2025-03-09 00:43:39,960 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1415 Valid, 3647 Invalid, 1617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1592 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2025-03-09 00:43:39,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4652 states. [2025-03-09 00:43:39,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4652 to 3223. [2025-03-09 00:43:40,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3223 states, 2248 states have (on average 1.9083629893238434) internal successors, (4290), 3204 states have internal predecessors, (4290), 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 00:43:40,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3223 states to 3223 states and 4328 transitions. [2025-03-09 00:43:40,005 INFO L78 Accepts]: Start accepts. Automaton has 3223 states and 4328 transitions. Word has length 8 [2025-03-09 00:43:40,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:43:40,005 INFO L471 AbstractCegarLoop]: Abstraction has 3223 states and 4328 transitions. [2025-03-09 00:43:40,005 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 00:43:40,005 INFO L276 IsEmpty]: Start isEmpty. Operand 3223 states and 4328 transitions. [2025-03-09 00:43:40,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-03-09 00:43:40,006 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:43:40,006 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:43:40,013 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 00:43:40,206 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 00:43:40,208 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr450REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-03-09 00:43:40,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:43:40,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1048584076, now seen corresponding path program 1 times [2025-03-09 00:43:40,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:43:40,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [475258245] [2025-03-09 00:43:40,210 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:43:40,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:43:40,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:43:40,215 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 00:43:40,216 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 00:43:40,333 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-09 00:43:40,341 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-09 00:43:40,341 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:43:40,341 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:43:40,343 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 00:43:40,344 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:43:40,348 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 00:43:40,367 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 00:43:40,367 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:43:40,367 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:43:40,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475258245] [2025-03-09 00:43:40,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [475258245] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:43:40,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:43:40,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 00:43:40,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460555798] [2025-03-09 00:43:40,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:43:40,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:43:40,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:43:40,368 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:43:40,368 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:43:40,368 INFO L87 Difference]: Start difference. First operand 3223 states and 4328 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 00:43:43,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:43:43,216 INFO L93 Difference]: Finished difference Result 3687 states and 4642 transitions. [2025-03-09 00:43:43,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:43:43,217 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 00:43:43,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:43:43,227 INFO L225 Difference]: With dead ends: 3687 [2025-03-09 00:43:43,227 INFO L226 Difference]: Without dead ends: 3687 [2025-03-09 00:43:43,228 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 00:43:43,228 INFO L435 NwaCegarLoop]: 1333 mSDtfsCounter, 2090 mSDsluCounter, 1659 mSDsCounter, 0 mSdLazyCounter, 2341 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2100 SdHoareTripleChecker+Valid, 2992 SdHoareTripleChecker+Invalid, 2372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 2341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2025-03-09 00:43:43,229 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2100 Valid, 2992 Invalid, 2372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 2341 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2025-03-09 00:43:43,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3687 states. [2025-03-09 00:43:43,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3687 to 3200. [2025-03-09 00:43:43,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3200 states, 2248 states have (on average 1.887900355871886) internal successors, (4244), 3181 states have internal predecessors, (4244), 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 00:43:43,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3200 states to 3200 states and 4282 transitions. [2025-03-09 00:43:43,266 INFO L78 Accepts]: Start accepts. Automaton has 3200 states and 4282 transitions. Word has length 10 [2025-03-09 00:43:43,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:43:43,266 INFO L471 AbstractCegarLoop]: Abstraction has 3200 states and 4282 transitions. [2025-03-09 00:43:43,266 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 00:43:43,266 INFO L276 IsEmpty]: Start isEmpty. Operand 3200 states and 4282 transitions. [2025-03-09 00:43:43,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-03-09 00:43:43,266 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:43:43,266 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:43:43,273 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 00:43:43,467 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 00:43:43,467 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr451REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-03-09 00:43:43,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:43:43,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1048584077, now seen corresponding path program 1 times [2025-03-09 00:43:43,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:43:43,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [410794161] [2025-03-09 00:43:43,468 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:43:43,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:43:43,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:43:43,470 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 00:43:43,471 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 00:43:43,586 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-09 00:43:43,597 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-09 00:43:43,597 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:43:43,597 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:43:43,600 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-09 00:43:43,602 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:43:43,606 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-09 00:43:43,656 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 00:43:43,657 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:43:43,657 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:43:43,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410794161] [2025-03-09 00:43:43,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410794161] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:43:43,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:43:43,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 00:43:43,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654137979] [2025-03-09 00:43:43,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:43:43,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:43:43,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:43:43,658 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:43:43,658 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:43:43,659 INFO L87 Difference]: Start difference. First operand 3200 states and 4282 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 00:43:47,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:43:47,206 INFO L93 Difference]: Finished difference Result 3941 states and 5095 transitions. [2025-03-09 00:43:47,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:43:47,207 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 00:43:47,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:43:47,214 INFO L225 Difference]: With dead ends: 3941 [2025-03-09 00:43:47,215 INFO L226 Difference]: Without dead ends: 3941 [2025-03-09 00:43:47,215 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 00:43:47,215 INFO L435 NwaCegarLoop]: 1928 mSDtfsCounter, 848 mSDsluCounter, 2351 mSDsCounter, 0 mSdLazyCounter, 2460 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 4279 SdHoareTripleChecker+Invalid, 2475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2025-03-09 00:43:47,215 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [851 Valid, 4279 Invalid, 2475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 2460 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2025-03-09 00:43:47,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3941 states. [2025-03-09 00:43:47,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3941 to 3247. [2025-03-09 00:43:47,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3247 states, 2295 states have (on average 1.8753812636165577) internal successors, (4304), 3228 states have internal predecessors, (4304), 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 00:43:47,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3247 states to 3247 states and 4342 transitions. [2025-03-09 00:43:47,247 INFO L78 Accepts]: Start accepts. Automaton has 3247 states and 4342 transitions. Word has length 10 [2025-03-09 00:43:47,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:43:47,247 INFO L471 AbstractCegarLoop]: Abstraction has 3247 states and 4342 transitions. [2025-03-09 00:43:47,247 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 00:43:47,247 INFO L276 IsEmpty]: Start isEmpty. Operand 3247 states and 4342 transitions. [2025-03-09 00:43:47,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-03-09 00:43:47,247 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:43:47,247 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:43:47,255 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-03-09 00:43:47,452 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 00:43:47,452 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr427REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-03-09 00:43:47,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:43:47,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1853675473, now seen corresponding path program 1 times [2025-03-09 00:43:47,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:43:47,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [346606670] [2025-03-09 00:43:47,452 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:43:47,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:43:47,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:43:47,454 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 00:43:47,455 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 00:43:47,564 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-09 00:43:47,573 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-09 00:43:47,573 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:43:47,573 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:43:47,574 INFO L256 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 00:43:47,576 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:43:47,591 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 00:43:47,592 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:43:47,592 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:43:47,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346606670] [2025-03-09 00:43:47,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346606670] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:43:47,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:43:47,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:43:47,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256560138] [2025-03-09 00:43:47,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:43:47,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:43:47,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:43:47,593 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:43:47,593 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:43:47,593 INFO L87 Difference]: Start difference. First operand 3247 states and 4342 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 00:43:47,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:43:47,652 INFO L93 Difference]: Finished difference Result 3169 states and 4221 transitions. [2025-03-09 00:43:47,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 00:43:47,652 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 00:43:47,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:43:47,658 INFO L225 Difference]: With dead ends: 3169 [2025-03-09 00:43:47,658 INFO L226 Difference]: Without dead ends: 3169 [2025-03-09 00:43:47,658 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 00:43:47,659 INFO L435 NwaCegarLoop]: 2167 mSDtfsCounter, 45 mSDsluCounter, 4311 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 6478 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 00:43:47,659 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 6478 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-09 00:43:47,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3169 states. [2025-03-09 00:43:47,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3169 to 3163. [2025-03-09 00:43:47,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3163 states, 2230 states have (on average 1.8730941704035875) internal successors, (4177), 3144 states have internal predecessors, (4177), 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 00:43:47,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3163 states to 3163 states and 4215 transitions. [2025-03-09 00:43:47,714 INFO L78 Accepts]: Start accepts. Automaton has 3163 states and 4215 transitions. Word has length 11 [2025-03-09 00:43:47,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:43:47,714 INFO L471 AbstractCegarLoop]: Abstraction has 3163 states and 4215 transitions. [2025-03-09 00:43:47,715 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 00:43:47,715 INFO L276 IsEmpty]: Start isEmpty. Operand 3163 states and 4215 transitions. [2025-03-09 00:43:47,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-03-09 00:43:47,715 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:43:47,715 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 00:43:47,732 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 00:43:47,916 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 00:43:47,916 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1072REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-03-09 00:43:47,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:43:47,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1074279377, now seen corresponding path program 1 times [2025-03-09 00:43:47,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:43:47,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1441377395] [2025-03-09 00:43:47,917 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:43:47,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:43:47,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:43:47,919 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 00:43:47,920 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 00:43:48,046 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-09 00:43:48,064 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 00:43:48,064 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:43:48,064 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:43:48,066 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 00:43:48,068 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:43:48,089 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 00:43:48,089 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:43:48,089 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:43:48,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441377395] [2025-03-09 00:43:48,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1441377395] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:43:48,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:43:48,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 00:43:48,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462157680] [2025-03-09 00:43:48,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:43:48,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:43:48,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:43:48,099 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:43:48,099 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:43:48,099 INFO L87 Difference]: Start difference. First operand 3163 states and 4215 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 00:43:50,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:43:50,843 INFO L93 Difference]: Finished difference Result 3838 states and 4935 transitions. [2025-03-09 00:43:50,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:43:50,843 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 00:43:50,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:43:50,852 INFO L225 Difference]: With dead ends: 3838 [2025-03-09 00:43:50,852 INFO L226 Difference]: Without dead ends: 3838 [2025-03-09 00:43:50,852 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 00:43:50,852 INFO L435 NwaCegarLoop]: 2051 mSDtfsCounter, 1871 mSDsluCounter, 2195 mSDsCounter, 0 mSdLazyCounter, 2726 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1881 SdHoareTripleChecker+Valid, 4246 SdHoareTripleChecker+Invalid, 2758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2025-03-09 00:43:50,853 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1881 Valid, 4246 Invalid, 2758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 2726 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2025-03-09 00:43:50,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3838 states. [2025-03-09 00:43:50,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3838 to 3140. [2025-03-09 00:43:50,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3140 states, 2230 states have (on average 1.8524663677130044) internal successors, (4131), 3121 states have internal predecessors, (4131), 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 00:43:50,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3140 states to 3140 states and 4169 transitions. [2025-03-09 00:43:50,898 INFO L78 Accepts]: Start accepts. Automaton has 3140 states and 4169 transitions. Word has length 19 [2025-03-09 00:43:50,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:43:50,898 INFO L471 AbstractCegarLoop]: Abstraction has 3140 states and 4169 transitions. [2025-03-09 00:43:50,899 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 00:43:50,899 INFO L276 IsEmpty]: Start isEmpty. Operand 3140 states and 4169 transitions. [2025-03-09 00:43:50,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-03-09 00:43:50,900 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:43:50,900 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 00:43:50,909 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 00:43:51,100 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 00:43:51,100 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1073REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-03-09 00:43:51,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:43:51,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1074279378, now seen corresponding path program 1 times [2025-03-09 00:43:51,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:43:51,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [8041087] [2025-03-09 00:43:51,101 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:43:51,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:43:51,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:43:51,103 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 00:43:51,104 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 00:43:51,221 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-09 00:43:51,241 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 00:43:51,241 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:43:51,241 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:43:51,244 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-09 00:43:51,246 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:43:51,258 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 00:43:51,332 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 00:43:51,332 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:43:51,332 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:43:51,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8041087] [2025-03-09 00:43:51,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [8041087] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:43:51,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:43:51,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 00:43:51,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472142079] [2025-03-09 00:43:51,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:43:51,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:43:51,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:43:51,333 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:43:51,333 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:43:51,333 INFO L87 Difference]: Start difference. First operand 3140 states and 4169 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 00:43:55,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:43:55,407 INFO L93 Difference]: Finished difference Result 4571 states and 5912 transitions. [2025-03-09 00:43:55,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:43:55,407 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 00:43:55,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:43:55,417 INFO L225 Difference]: With dead ends: 4571 [2025-03-09 00:43:55,417 INFO L226 Difference]: Without dead ends: 4571 [2025-03-09 00:43:55,417 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 00:43:55,418 INFO L435 NwaCegarLoop]: 2406 mSDtfsCounter, 1447 mSDsluCounter, 2676 mSDsCounter, 0 mSdLazyCounter, 2859 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1451 SdHoareTripleChecker+Valid, 5082 SdHoareTripleChecker+Invalid, 2881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 2859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2025-03-09 00:43:55,418 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1451 Valid, 5082 Invalid, 2881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 2859 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2025-03-09 00:43:55,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4571 states. [2025-03-09 00:43:55,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4571 to 3254. [2025-03-09 00:43:55,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3254 states, 2344 states have (on average 1.8212457337883958) internal successors, (4269), 3235 states have internal predecessors, (4269), 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 00:43:55,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3254 states to 3254 states and 4307 transitions. [2025-03-09 00:43:55,449 INFO L78 Accepts]: Start accepts. Automaton has 3254 states and 4307 transitions. Word has length 19 [2025-03-09 00:43:55,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:43:55,449 INFO L471 AbstractCegarLoop]: Abstraction has 3254 states and 4307 transitions. [2025-03-09 00:43:55,449 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 00:43:55,449 INFO L276 IsEmpty]: Start isEmpty. Operand 3254 states and 4307 transitions. [2025-03-09 00:43:55,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-03-09 00:43:55,450 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:43:55,450 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 00:43:55,457 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 00:43:55,650 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 00:43:55,650 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr764REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-03-09 00:43:55,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:43:55,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1055408786, now seen corresponding path program 1 times [2025-03-09 00:43:55,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:43:55,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [5192855] [2025-03-09 00:43:55,651 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:43:55,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:43:55,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:43:55,654 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 00:43:55,656 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 00:43:55,773 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-09 00:43:55,790 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 00:43:55,790 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:43:55,790 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:43:55,793 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 00:43:55,794 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:43:55,817 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 00:43:55,817 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:43:55,817 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:43:55,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5192855] [2025-03-09 00:43:55,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5192855] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:43:55,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:43:55,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 00:43:55,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205513247] [2025-03-09 00:43:55,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:43:55,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:43:55,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:43:55,818 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:43:55,818 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:43:55,818 INFO L87 Difference]: Start difference. First operand 3254 states and 4307 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 00:43:58,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:43:58,397 INFO L93 Difference]: Finished difference Result 3937 states and 4989 transitions. [2025-03-09 00:43:58,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:43:58,397 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 00:43:58,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:43:58,403 INFO L225 Difference]: With dead ends: 3937 [2025-03-09 00:43:58,403 INFO L226 Difference]: Without dead ends: 3937 [2025-03-09 00:43:58,404 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 00:43:58,404 INFO L435 NwaCegarLoop]: 2051 mSDtfsCounter, 1848 mSDsluCounter, 2195 mSDsCounter, 0 mSdLazyCounter, 2680 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1858 SdHoareTripleChecker+Valid, 4246 SdHoareTripleChecker+Invalid, 2712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-03-09 00:43:58,405 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1858 Valid, 4246 Invalid, 2712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 2680 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-03-09 00:43:58,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3937 states. [2025-03-09 00:43:58,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3937 to 3231. [2025-03-09 00:43:58,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3231 states, 2344 states have (on average 1.7819965870307166) internal successors, (4177), 3212 states have internal predecessors, (4177), 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 00:43:58,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3231 states to 3231 states and 4215 transitions. [2025-03-09 00:43:58,438 INFO L78 Accepts]: Start accepts. Automaton has 3231 states and 4215 transitions. Word has length 19 [2025-03-09 00:43:58,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:43:58,438 INFO L471 AbstractCegarLoop]: Abstraction has 3231 states and 4215 transitions. [2025-03-09 00:43:58,438 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 00:43:58,438 INFO L276 IsEmpty]: Start isEmpty. Operand 3231 states and 4215 transitions. [2025-03-09 00:43:58,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-03-09 00:43:58,441 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:43:58,441 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 00:43:58,455 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 00:43:58,642 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 00:43:58,643 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr765REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-03-09 00:43:58,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:43:58,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1055408787, now seen corresponding path program 1 times [2025-03-09 00:43:58,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:43:58,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1421047925] [2025-03-09 00:43:58,644 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:43:58,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:43:58,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:43:58,646 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 00:43:58,647 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 00:43:58,781 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-09 00:43:58,803 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 00:43:58,803 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:43:58,803 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:43:58,807 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-09 00:43:58,810 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:43:58,818 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 00:43:58,882 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 00:43:58,882 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:43:58,883 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:43:58,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421047925] [2025-03-09 00:43:58,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1421047925] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:43:58,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:43:58,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 00:43:58,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797170895] [2025-03-09 00:43:58,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:43:58,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:43:58,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:43:58,883 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:43:58,884 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:43:58,884 INFO L87 Difference]: Start difference. First operand 3231 states and 4215 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 00:44:02,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:44:02,818 INFO L93 Difference]: Finished difference Result 4639 states and 5958 transitions. [2025-03-09 00:44:02,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:44:02,818 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 00:44:02,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:44:02,825 INFO L225 Difference]: With dead ends: 4639 [2025-03-09 00:44:02,825 INFO L226 Difference]: Without dead ends: 4639 [2025-03-09 00:44:02,825 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 00:44:02,826 INFO L435 NwaCegarLoop]: 2376 mSDtfsCounter, 1424 mSDsluCounter, 2630 mSDsCounter, 0 mSdLazyCounter, 2853 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1428 SdHoareTripleChecker+Valid, 5006 SdHoareTripleChecker+Invalid, 2875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 2853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2025-03-09 00:44:02,826 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1428 Valid, 5006 Invalid, 2875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 2853 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2025-03-09 00:44:02,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4639 states. [2025-03-09 00:44:02,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4639 to 3345. [2025-03-09 00:44:02,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3345 states, 2458 states have (on average 1.7554922701383238) internal successors, (4315), 3326 states have internal predecessors, (4315), 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 00:44:02,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3345 states to 3345 states and 4353 transitions. [2025-03-09 00:44:02,861 INFO L78 Accepts]: Start accepts. Automaton has 3345 states and 4353 transitions. Word has length 19 [2025-03-09 00:44:02,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:44:02,861 INFO L471 AbstractCegarLoop]: Abstraction has 3345 states and 4353 transitions. [2025-03-09 00:44:02,861 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 00:44:02,862 INFO L276 IsEmpty]: Start isEmpty. Operand 3345 states and 4353 transitions. [2025-03-09 00:44:02,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-03-09 00:44:02,864 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:44:02,864 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 00:44:02,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-03-09 00:44:03,064 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 00:44:03,065 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1073REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-03-09 00:44:03,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:44:03,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1872362321, now seen corresponding path program 1 times [2025-03-09 00:44:03,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:44:03,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [19826033] [2025-03-09 00:44:03,066 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:44:03,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:44:03,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:44:03,068 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 00:44:03,070 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 00:44:03,206 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-03-09 00:44:03,255 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-03-09 00:44:03,255 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:44:03,256 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:44:03,263 INFO L256 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-09 00:44:03,265 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:44:03,272 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 00:44:03,399 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 00:44:03,400 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 00:44:03,719 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 00:44:03,719 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:44:03,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19826033] [2025-03-09 00:44:03,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [19826033] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 00:44:03,720 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-09 00:44:03,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2025-03-09 00:44:03,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24568171] [2025-03-09 00:44:03,720 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-09 00:44:03,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-09 00:44:03,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:44:03,720 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-09 00:44:03,720 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-09 00:44:03,720 INFO L87 Difference]: Start difference. First operand 3345 states and 4353 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 00:44:14,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:44:14,728 INFO L93 Difference]: Finished difference Result 5026 states and 6488 transitions. [2025-03-09 00:44:14,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-09 00:44:14,729 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 00:44:14,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:44:14,734 INFO L225 Difference]: With dead ends: 5026 [2025-03-09 00:44:14,734 INFO L226 Difference]: Without dead ends: 5026 [2025-03-09 00:44:14,734 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 00:44:14,735 INFO L435 NwaCegarLoop]: 2384 mSDtfsCounter, 3669 mSDsluCounter, 5883 mSDsCounter, 0 mSdLazyCounter, 5672 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3675 SdHoareTripleChecker+Valid, 8267 SdHoareTripleChecker+Invalid, 5704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 5672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2025-03-09 00:44:14,735 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3675 Valid, 8267 Invalid, 5704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 5672 Invalid, 0 Unknown, 0 Unchecked, 10.8s Time] [2025-03-09 00:44:14,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5026 states. [2025-03-09 00:44:14,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5026 to 3509. [2025-03-09 00:44:14,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3509 states, 2622 states have (on average 1.7341723874904653) internal successors, (4547), 3490 states have internal predecessors, (4547), 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 00:44:14,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3509 states to 3509 states and 4585 transitions. [2025-03-09 00:44:14,764 INFO L78 Accepts]: Start accepts. Automaton has 3509 states and 4585 transitions. Word has length 38 [2025-03-09 00:44:14,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:44:14,765 INFO L471 AbstractCegarLoop]: Abstraction has 3509 states and 4585 transitions. [2025-03-09 00:44:14,765 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 00:44:14,765 INFO L276 IsEmpty]: Start isEmpty. Operand 3509 states and 4585 transitions. [2025-03-09 00:44:14,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-03-09 00:44:14,766 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:44:14,766 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 00:44:14,776 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 00:44:14,966 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 00:44:14,966 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr765REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-03-09 00:44:14,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:44:14,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1339764787, now seen corresponding path program 1 times [2025-03-09 00:44:14,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:44:14,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [859470774] [2025-03-09 00:44:14,967 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:44:14,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:44:14,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:44:14,970 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 00:44:14,970 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 00:44:15,109 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-03-09 00:44:15,157 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-03-09 00:44:15,157 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:44:15,157 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:44:15,166 INFO L256 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-09 00:44:15,168 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:44:15,174 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 00:44:15,304 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 00:44:15,304 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 00:44:15,607 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 00:44:15,607 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:44:15,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859470774] [2025-03-09 00:44:15,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [859470774] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 00:44:15,607 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-09 00:44:15,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2025-03-09 00:44:15,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555244949] [2025-03-09 00:44:15,607 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-09 00:44:15,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-09 00:44:15,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:44:15,608 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-09 00:44:15,608 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-09 00:44:15,608 INFO L87 Difference]: Start difference. First operand 3509 states and 4585 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 00:44:26,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:44:26,252 INFO L93 Difference]: Finished difference Result 5190 states and 6720 transitions. [2025-03-09 00:44:26,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-09 00:44:26,253 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 00:44:26,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:44:26,257 INFO L225 Difference]: With dead ends: 5190 [2025-03-09 00:44:26,257 INFO L226 Difference]: Without dead ends: 5190 [2025-03-09 00:44:26,257 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 00:44:26,257 INFO L435 NwaCegarLoop]: 2377 mSDtfsCounter, 2045 mSDsluCounter, 6880 mSDsCounter, 0 mSdLazyCounter, 6575 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2051 SdHoareTripleChecker+Valid, 9257 SdHoareTripleChecker+Invalid, 6604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 6575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2025-03-09 00:44:26,258 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2051 Valid, 9257 Invalid, 6604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 6575 Invalid, 0 Unknown, 0 Unchecked, 10.4s Time] [2025-03-09 00:44:26,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5190 states. [2025-03-09 00:44:26,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5190 to 3673. [2025-03-09 00:44:26,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3673 states, 2786 states have (on average 1.7153625269203159) internal successors, (4779), 3654 states have internal predecessors, (4779), 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 00:44:26,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3673 states to 3673 states and 4817 transitions. [2025-03-09 00:44:26,289 INFO L78 Accepts]: Start accepts. Automaton has 3673 states and 4817 transitions. Word has length 38 [2025-03-09 00:44:26,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:44:26,289 INFO L471 AbstractCegarLoop]: Abstraction has 3673 states and 4817 transitions. [2025-03-09 00:44:26,289 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 00:44:26,289 INFO L276 IsEmpty]: Start isEmpty. Operand 3673 states and 4817 transitions. [2025-03-09 00:44:26,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-03-09 00:44:26,290 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:44:26,290 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 00:44:26,301 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 00:44:26,490 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 00:44:26,490 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr404REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-03-09 00:44:26,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:44:26,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1828640678, now seen corresponding path program 1 times [2025-03-09 00:44:26,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:44:26,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1485098651] [2025-03-09 00:44:26,491 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:44:26,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:44:26,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:44:26,493 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 00:44:26,494 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 00:44:26,633 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-03-09 00:44:26,660 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-03-09 00:44:26,661 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:44:26,661 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:44:26,664 INFO L256 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 00:44:26,665 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:44:26,764 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 00:44:26,764 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:44:26,764 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:44:26,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485098651] [2025-03-09 00:44:26,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485098651] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:44:26,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:44:26,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 00:44:26,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302921172] [2025-03-09 00:44:26,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:44:26,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 00:44:26,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:44:26,765 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 00:44:26,765 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:44:26,765 INFO L87 Difference]: Start difference. First operand 3673 states and 4817 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 00:44:26,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:44:26,936 INFO L93 Difference]: Finished difference Result 5242 states and 6499 transitions. [2025-03-09 00:44:26,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 00:44:26,936 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 00:44:26,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:44:26,941 INFO L225 Difference]: With dead ends: 5242 [2025-03-09 00:44:26,941 INFO L226 Difference]: Without dead ends: 5242 [2025-03-09 00:44:26,941 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 00:44:26,941 INFO L435 NwaCegarLoop]: 2211 mSDtfsCounter, 1432 mSDsluCounter, 2041 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1439 SdHoareTripleChecker+Valid, 4252 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-09 00:44:26,941 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1439 Valid, 4252 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-09 00:44:26,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5242 states. [2025-03-09 00:44:26,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5242 to 4380. [2025-03-09 00:44:26,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4380 states, 3489 states have (on average 1.706792777300086) internal successors, (5955), 4354 states have internal predecessors, (5955), 26 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2025-03-09 00:44:26,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4380 states to 4380 states and 6007 transitions. [2025-03-09 00:44:26,977 INFO L78 Accepts]: Start accepts. Automaton has 4380 states and 6007 transitions. Word has length 39 [2025-03-09 00:44:26,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:44:26,978 INFO L471 AbstractCegarLoop]: Abstraction has 4380 states and 6007 transitions. [2025-03-09 00:44:26,978 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 00:44:26,978 INFO L276 IsEmpty]: Start isEmpty. Operand 4380 states and 6007 transitions. [2025-03-09 00:44:26,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2025-03-09 00:44:26,980 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:44:26,980 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 00:44:26,989 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 00:44:27,184 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 00:44:27,184 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-03-09 00:44:27,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:44:27,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1641912525, now seen corresponding path program 1 times [2025-03-09 00:44:27,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:44:27,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [453970255] [2025-03-09 00:44:27,185 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:44:27,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:44:27,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:44:27,188 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 00:44:27,191 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 00:44:27,359 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 50 statements into 1 equivalence classes. [2025-03-09 00:44:27,391 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 50 of 50 statements. [2025-03-09 00:44:27,392 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:44:27,392 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:44:27,397 INFO L256 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 00:44:27,399 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:44:27,426 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 00:44:27,426 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:44:27,426 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:44:27,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453970255] [2025-03-09 00:44:27,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [453970255] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:44:27,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:44:27,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:44:27,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782609587] [2025-03-09 00:44:27,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:44:27,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:44:27,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:44:27,427 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:44:27,427 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:44:27,428 INFO L87 Difference]: Start difference. First operand 4380 states and 6007 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 00:44:27,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:44:27,476 INFO L93 Difference]: Finished difference Result 4362 states and 5973 transitions. [2025-03-09 00:44:27,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 00:44:27,477 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 00:44:27,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:44:27,481 INFO L225 Difference]: With dead ends: 4362 [2025-03-09 00:44:27,481 INFO L226 Difference]: Without dead ends: 4362 [2025-03-09 00:44:27,482 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 00:44:27,483 INFO L435 NwaCegarLoop]: 2123 mSDtfsCounter, 27 mSDsluCounter, 4209 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 6332 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 00:44:27,483 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 6332 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-09 00:44:27,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4362 states. [2025-03-09 00:44:27,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4362 to 4362. [2025-03-09 00:44:27,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4362 states, 3471 states have (on average 1.7058484586574474) internal successors, (5921), 4336 states have internal predecessors, (5921), 26 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2025-03-09 00:44:27,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4362 states to 4362 states and 5973 transitions. [2025-03-09 00:44:27,544 INFO L78 Accepts]: Start accepts. Automaton has 4362 states and 5973 transitions. Word has length 50 [2025-03-09 00:44:27,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:44:27,545 INFO L471 AbstractCegarLoop]: Abstraction has 4362 states and 5973 transitions. [2025-03-09 00:44:27,545 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 00:44:27,545 INFO L276 IsEmpty]: Start isEmpty. Operand 4362 states and 5973 transitions. [2025-03-09 00:44:27,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2025-03-09 00:44:27,546 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:44:27,546 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 00:44:27,554 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 00:44:27,750 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 00:44:27,750 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr712REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-03-09 00:44:27,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:44:27,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1253368553, now seen corresponding path program 1 times [2025-03-09 00:44:27,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:44:27,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1083291925] [2025-03-09 00:44:27,751 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:44:27,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:44:27,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:44:27,752 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 00:44:27,753 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 00:44:27,885 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 50 statements into 1 equivalence classes. [2025-03-09 00:44:27,925 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 50 of 50 statements. [2025-03-09 00:44:27,926 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:44:27,926 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:44:27,933 INFO L256 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 00:44:27,934 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:44:28,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:44:28,055 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:44:28,055 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:44:28,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083291925] [2025-03-09 00:44:28,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1083291925] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:44:28,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:44:28,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 00:44:28,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035692022] [2025-03-09 00:44:28,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:44:28,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 00:44:28,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:44:28,056 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 00:44:28,056 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:44:28,056 INFO L87 Difference]: Start difference. First operand 4362 states and 5973 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 00:44:28,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:44:28,162 INFO L93 Difference]: Finished difference Result 5720 states and 7424 transitions. [2025-03-09 00:44:28,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 00:44:28,162 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 00:44:28,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:44:28,167 INFO L225 Difference]: With dead ends: 5720 [2025-03-09 00:44:28,168 INFO L226 Difference]: Without dead ends: 5720 [2025-03-09 00:44:28,168 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 00:44:28,168 INFO L435 NwaCegarLoop]: 2219 mSDtfsCounter, 1315 mSDsluCounter, 2075 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1322 SdHoareTripleChecker+Valid, 4294 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 00:44:28,168 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1322 Valid, 4294 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-09 00:44:28,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5720 states. [2025-03-09 00:44:28,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5720 to 5094. [2025-03-09 00:44:28,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5094 states, 4199 states have (on average 1.698023338890212) internal successors, (7130), 5061 states have internal predecessors, (7130), 33 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (33), 30 states have call predecessors, (33), 33 states have call successors, (33) [2025-03-09 00:44:28,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5094 states to 5094 states and 7196 transitions. [2025-03-09 00:44:28,227 INFO L78 Accepts]: Start accepts. Automaton has 5094 states and 7196 transitions. Word has length 50 [2025-03-09 00:44:28,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:44:28,227 INFO L471 AbstractCegarLoop]: Abstraction has 5094 states and 7196 transitions. [2025-03-09 00:44:28,227 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 00:44:28,227 INFO L276 IsEmpty]: Start isEmpty. Operand 5094 states and 7196 transitions. [2025-03-09 00:44:28,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2025-03-09 00:44:28,229 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:44:28,229 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 00:44:28,238 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 00:44:28,429 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 00:44:28,430 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr991REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-03-09 00:44:28,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:44:28,430 INFO L85 PathProgramCache]: Analyzing trace with hash -583575815, now seen corresponding path program 1 times [2025-03-09 00:44:28,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:44:28,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [673933326] [2025-03-09 00:44:28,430 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:44:28,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:44:28,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:44:28,433 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 00:44:28,434 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 00:44:28,574 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 53 statements into 1 equivalence classes. [2025-03-09 00:44:28,618 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 53 of 53 statements. [2025-03-09 00:44:28,618 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:44:28,618 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:44:28,625 INFO L256 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 00:44:28,626 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:44:28,647 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 00:44:28,647 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:44:28,647 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:44:28,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673933326] [2025-03-09 00:44:28,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [673933326] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:44:28,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:44:28,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:44:28,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813455342] [2025-03-09 00:44:28,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:44:28,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:44:28,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:44:28,648 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:44:28,648 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:44:28,648 INFO L87 Difference]: Start difference. First operand 5094 states and 7196 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 00:44:28,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:44:28,709 INFO L93 Difference]: Finished difference Result 4639 states and 6542 transitions. [2025-03-09 00:44:28,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 00:44:28,709 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 00:44:28,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:44:28,713 INFO L225 Difference]: With dead ends: 4639 [2025-03-09 00:44:28,714 INFO L226 Difference]: Without dead ends: 4639 [2025-03-09 00:44:28,714 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 00:44:28,714 INFO L435 NwaCegarLoop]: 2077 mSDtfsCounter, 56 mSDsluCounter, 4081 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 6158 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 00:44:28,714 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 6158 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-09 00:44:28,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4639 states. [2025-03-09 00:44:28,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4639 to 4636. [2025-03-09 00:44:28,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4636 states, 3764 states have (on average 1.7197130712008502) internal successors, (6473), 4603 states have internal predecessors, (6473), 33 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (33), 30 states have call predecessors, (33), 33 states have call successors, (33) [2025-03-09 00:44:28,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4636 states to 4636 states and 6539 transitions. [2025-03-09 00:44:28,788 INFO L78 Accepts]: Start accepts. Automaton has 4636 states and 6539 transitions. Word has length 53 [2025-03-09 00:44:28,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:44:28,788 INFO L471 AbstractCegarLoop]: Abstraction has 4636 states and 6539 transitions. [2025-03-09 00:44:28,788 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 00:44:28,788 INFO L276 IsEmpty]: Start isEmpty. Operand 4636 states and 6539 transitions. [2025-03-09 00:44:28,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2025-03-09 00:44:28,789 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:44:28,789 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 00:44:28,800 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2025-03-09 00:44:28,989 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 00:44:28,990 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr683REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-03-09 00:44:28,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:44:28,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1343758566, now seen corresponding path program 1 times [2025-03-09 00:44:28,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:44:28,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [976690689] [2025-03-09 00:44:28,991 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:44:28,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:44:28,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:44:28,993 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 00:44:28,995 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 00:44:29,186 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 53 statements into 1 equivalence classes. [2025-03-09 00:44:29,238 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 53 of 53 statements. [2025-03-09 00:44:29,238 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:44:29,238 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:44:29,248 INFO L256 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 00:44:29,250 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:44:29,271 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 00:44:29,271 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:44:29,271 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:44:29,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976690689] [2025-03-09 00:44:29,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976690689] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:44:29,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:44:29,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:44:29,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879821157] [2025-03-09 00:44:29,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:44:29,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:44:29,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:44:29,272 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:44:29,272 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:44:29,273 INFO L87 Difference]: Start difference. First operand 4636 states and 6539 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 00:44:29,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:44:29,351 INFO L93 Difference]: Finished difference Result 4172 states and 5797 transitions. [2025-03-09 00:44:29,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 00:44:29,352 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 00:44:29,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:44:29,357 INFO L225 Difference]: With dead ends: 4172 [2025-03-09 00:44:29,357 INFO L226 Difference]: Without dead ends: 4172 [2025-03-09 00:44:29,358 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 00:44:29,358 INFO L435 NwaCegarLoop]: 2042 mSDtfsCounter, 76 mSDsluCounter, 3991 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 6033 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 00:44:29,358 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 6033 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-09 00:44:29,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4172 states. [2025-03-09 00:44:29,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4172 to 4165. [2025-03-09 00:44:29,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4165 states, 3305 states have (on average 1.7319213313161876) internal successors, (5724), 4132 states have internal predecessors, (5724), 33 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (33), 30 states have call predecessors, (33), 33 states have call successors, (33) [2025-03-09 00:44:29,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4165 states to 4165 states and 5790 transitions. [2025-03-09 00:44:29,404 INFO L78 Accepts]: Start accepts. Automaton has 4165 states and 5790 transitions. Word has length 53 [2025-03-09 00:44:29,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:44:29,404 INFO L471 AbstractCegarLoop]: Abstraction has 4165 states and 5790 transitions. [2025-03-09 00:44:29,404 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 00:44:29,404 INFO L276 IsEmpty]: Start isEmpty. Operand 4165 states and 5790 transitions. [2025-03-09 00:44:29,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2025-03-09 00:44:29,405 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:44:29,405 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 00:44:29,418 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 00:44:29,605 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 00:44:29,606 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-03-09 00:44:29,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:44:29,606 INFO L85 PathProgramCache]: Analyzing trace with hash 95401477, now seen corresponding path program 1 times [2025-03-09 00:44:29,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:44:29,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1860933797] [2025-03-09 00:44:29,606 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:44:29,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:44:29,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:44:29,608 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 00:44:29,609 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 00:44:29,760 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-03-09 00:44:29,790 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-03-09 00:44:29,791 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:44:29,791 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:44:29,795 INFO L256 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 00:44:29,797 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:44:29,801 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-09 00:44:29,801 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-09 00:44:29,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 31 [2025-03-09 00:44:29,822 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-09 00:44:29,822 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 22 [2025-03-09 00:44:29,833 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 00:44:29,833 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:44:29,833 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:44:29,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860933797] [2025-03-09 00:44:29,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860933797] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:44:29,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:44:29,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:44:29,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840785612] [2025-03-09 00:44:29,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:44:29,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:44:29,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:44:29,834 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:44:29,834 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:44:29,834 INFO L87 Difference]: Start difference. First operand 4165 states and 5790 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 00:44:30,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:44:30,455 INFO L93 Difference]: Finished difference Result 4736 states and 6278 transitions. [2025-03-09 00:44:30,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:44:30,455 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 00:44:30,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:44:30,460 INFO L225 Difference]: With dead ends: 4736 [2025-03-09 00:44:30,460 INFO L226 Difference]: Without dead ends: 4736 [2025-03-09 00:44:30,461 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 00:44:30,461 INFO L435 NwaCegarLoop]: 2162 mSDtfsCounter, 1687 mSDsluCounter, 3398 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1696 SdHoareTripleChecker+Valid, 5560 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-09 00:44:30,461 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1696 Valid, 5560 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-09 00:44:30,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4736 states. [2025-03-09 00:44:30,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4736 to 3885. [2025-03-09 00:44:30,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3885 states, 3028 states have (on average 1.7410832232496698) internal successors, (5272), 3855 states have internal predecessors, (5272), 30 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30) [2025-03-09 00:44:30,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3885 states to 3885 states and 5332 transitions. [2025-03-09 00:44:30,503 INFO L78 Accepts]: Start accepts. Automaton has 3885 states and 5332 transitions. Word has length 58 [2025-03-09 00:44:30,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:44:30,503 INFO L471 AbstractCegarLoop]: Abstraction has 3885 states and 5332 transitions. [2025-03-09 00:44:30,503 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 00:44:30,503 INFO L276 IsEmpty]: Start isEmpty. Operand 3885 states and 5332 transitions. [2025-03-09 00:44:30,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2025-03-09 00:44:30,504 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:44:30,504 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 00:44:30,512 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 00:44:30,704 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 00:44:30,704 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr991REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-03-09 00:44:30,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:44:30,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1816994225, now seen corresponding path program 1 times [2025-03-09 00:44:30,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:44:30,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1554526252] [2025-03-09 00:44:30,705 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:44:30,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:44:30,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:44:30,706 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 00:44:30,708 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 00:44:30,873 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 61 statements into 1 equivalence classes. [2025-03-09 00:44:30,947 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 61 of 61 statements. [2025-03-09 00:44:30,948 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:44:30,948 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:44:30,956 INFO L256 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-09 00:44:30,958 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:44:30,964 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 00:44:31,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-09 00:44:31,245 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 00:44:31,251 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-09 00:44:31,251 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 00:44:31,256 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 00:44:31,257 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:44:31,257 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:44:31,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554526252] [2025-03-09 00:44:31,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1554526252] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:44:31,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:44:31,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:44:31,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278831617] [2025-03-09 00:44:31,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:44:31,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 00:44:31,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:44:31,257 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 00:44:31,257 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:44:31,257 INFO L87 Difference]: Start difference. First operand 3885 states and 5332 transitions. Second operand has 5 states, 4 states have (on average 15.25) internal successors, (61), 5 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 00:44:34,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:44:34,482 INFO L93 Difference]: Finished difference Result 3801 states and 5144 transitions. [2025-03-09 00:44:34,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 00:44:34,483 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.25) internal successors, (61), 5 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 00:44:34,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:44:34,485 INFO L225 Difference]: With dead ends: 3801 [2025-03-09 00:44:34,485 INFO L226 Difference]: Without dead ends: 3801 [2025-03-09 00:44:34,486 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2025-03-09 00:44:34,486 INFO L435 NwaCegarLoop]: 876 mSDtfsCounter, 1704 mSDsluCounter, 921 mSDsCounter, 0 mSdLazyCounter, 2621 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1714 SdHoareTripleChecker+Valid, 1797 SdHoareTripleChecker+Invalid, 2713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 2621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2025-03-09 00:44:34,486 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1714 Valid, 1797 Invalid, 2713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 2621 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2025-03-09 00:44:34,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3801 states. [2025-03-09 00:44:34,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3801 to 3694. [2025-03-09 00:44:34,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3694 states, 2921 states have (on average 1.671345429647381) internal successors, (4882), 3664 states have internal predecessors, (4882), 30 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30) [2025-03-09 00:44:34,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3694 states to 3694 states and 4942 transitions. [2025-03-09 00:44:34,510 INFO L78 Accepts]: Start accepts. Automaton has 3694 states and 4942 transitions. Word has length 61 [2025-03-09 00:44:34,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:44:34,510 INFO L471 AbstractCegarLoop]: Abstraction has 3694 states and 4942 transitions. [2025-03-09 00:44:34,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.25) internal successors, (61), 5 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 00:44:34,510 INFO L276 IsEmpty]: Start isEmpty. Operand 3694 states and 4942 transitions. [2025-03-09 00:44:34,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-03-09 00:44:34,510 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:44:34,510 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 00:44:34,520 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 00:44:34,710 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 00:44:34,711 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr984REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-03-09 00:44:34,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:44:34,711 INFO L85 PathProgramCache]: Analyzing trace with hash 981506817, now seen corresponding path program 1 times [2025-03-09 00:44:34,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:44:34,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [757121696] [2025-03-09 00:44:34,712 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:44:34,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:44:34,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:44:34,713 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 00:44:34,715 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 00:44:34,862 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-03-09 00:44:34,912 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-03-09 00:44:34,912 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:44:34,912 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:44:34,920 INFO L256 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-09 00:44:34,922 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:44:34,928 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 00:44:34,939 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 00:44:34,952 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 00:44:34,959 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 00:44:34,959 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:44:34,959 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:44:34,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757121696] [2025-03-09 00:44:34,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757121696] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:44:34,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:44:34,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:44:34,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043072999] [2025-03-09 00:44:34,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:44:34,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 00:44:34,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:44:34,961 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 00:44:34,961 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:44:34,961 INFO L87 Difference]: Start difference. First operand 3694 states and 4942 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 00:44:37,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:44:37,519 INFO L93 Difference]: Finished difference Result 3693 states and 4940 transitions. [2025-03-09 00:44:37,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 00:44:37,520 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 00:44:37,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:44:37,523 INFO L225 Difference]: With dead ends: 3693 [2025-03-09 00:44:37,523 INFO L226 Difference]: Without dead ends: 3693 [2025-03-09 00:44:37,523 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 00:44:37,524 INFO L435 NwaCegarLoop]: 1968 mSDtfsCounter, 2 mSDsluCounter, 3316 mSDsCounter, 0 mSdLazyCounter, 2595 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 5284 SdHoareTripleChecker+Invalid, 2596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-03-09 00:44:37,524 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 5284 Invalid, 2596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2595 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-03-09 00:44:37,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3693 states. [2025-03-09 00:44:37,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3693 to 3693. [2025-03-09 00:44:37,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3693 states, 2921 states have (on average 1.6706607326258132) internal successors, (4880), 3663 states have internal predecessors, (4880), 30 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30) [2025-03-09 00:44:37,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3693 states to 3693 states and 4940 transitions. [2025-03-09 00:44:37,550 INFO L78 Accepts]: Start accepts. Automaton has 3693 states and 4940 transitions. Word has length 66 [2025-03-09 00:44:37,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:44:37,550 INFO L471 AbstractCegarLoop]: Abstraction has 3693 states and 4940 transitions. [2025-03-09 00:44:37,550 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 00:44:37,550 INFO L276 IsEmpty]: Start isEmpty. Operand 3693 states and 4940 transitions. [2025-03-09 00:44:37,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-03-09 00:44:37,551 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:44:37,551 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 00:44:37,562 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 00:44:37,751 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 00:44:37,751 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr985REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2025-03-09 00:44:37,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:44:37,752 INFO L85 PathProgramCache]: Analyzing trace with hash 981506818, now seen corresponding path program 1 times [2025-03-09 00:44:37,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:44:37,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [989504219] [2025-03-09 00:44:37,752 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:44:37,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:44:37,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:44:37,754 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 00:44:37,754 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 00:44:37,920 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-03-09 00:44:37,975 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-03-09 00:44:37,975 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:44:37,975 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:44:37,986 INFO L256 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-09 00:44:37,988 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:44:38,003 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 00:44:38,015 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 00:44:38,019 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 00:44:38,048 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 00:44:38,075 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 00:44:38,076 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:44:38,076 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:44:38,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989504219] [2025-03-09 00:44:38,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989504219] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:44:38,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:44:38,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:44:38,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28820229] [2025-03-09 00:44:38,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:44:38,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 00:44:38,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:44:38,076 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 00:44:38,076 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:44:38,076 INFO L87 Difference]: Start difference. First operand 3693 states and 4940 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)