./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test4-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test4-3.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 87dd09ebbd7004650762949ef44f5f810b259dfe76e04f61193dc727167eb435 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 00:50:14,604 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 00:50:14,662 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-09 00:50:14,666 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 00:50:14,667 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 00:50:14,688 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 00:50:14,689 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 00:50:14,689 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 00:50:14,689 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 00:50:14,689 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 00:50:14,690 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 00:50:14,690 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 00:50:14,690 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 00:50:14,691 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 00:50:14,691 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 00:50:14,691 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 00:50:14,691 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 00:50:14,691 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 00:50:14,691 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 00:50:14,691 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 00:50:14,692 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-09 00:50:14,692 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-09 00:50:14,692 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-09 00:50:14,692 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 00:50:14,692 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-09 00:50:14,692 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 00:50:14,692 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 00:50:14,692 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 00:50:14,692 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 00:50:14,692 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 00:50:14,693 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 00:50:14,693 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 00:50:14,693 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 00:50:14,693 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 00:50:14,693 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 00:50:14,693 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 00:50:14,693 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 00:50:14,693 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 00:50:14,693 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 00:50:14,693 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 00:50:14,694 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 00:50:14,694 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 00:50:14,694 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 87dd09ebbd7004650762949ef44f5f810b259dfe76e04f61193dc727167eb435 [2025-03-09 00:50:14,937 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 00:50:14,944 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 00:50:14,946 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 00:50:14,947 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 00:50:14,947 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 00:50:14,948 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test4-3.i [2025-03-09 00:50:16,089 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6bbfe1cb2/702adf99014d4432a820aa8ca2e7dba2/FLAG5cfcb479d [2025-03-09 00:50:16,407 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 00:50:16,407 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test4-3.i [2025-03-09 00:50:16,423 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6bbfe1cb2/702adf99014d4432a820aa8ca2e7dba2/FLAG5cfcb479d [2025-03-09 00:50:16,652 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6bbfe1cb2/702adf99014d4432a820aa8ca2e7dba2 [2025-03-09 00:50:16,654 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 00:50:16,655 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 00:50:16,656 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 00:50:16,656 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 00:50:16,659 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 00:50:16,659 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 12:50:16" (1/1) ... [2025-03-09 00:50:16,660 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a144549 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:50:16, skipping insertion in model container [2025-03-09 00:50:16,660 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 12:50:16" (1/1) ... [2025-03-09 00:50:16,701 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 00:50:16,973 WARN 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 00:50:17,001 WARN 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 00:50:17,003 WARN 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 00:50:17,006 WARN 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 00:50:17,010 WARN 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 00:50:17,032 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:50:17,033 WARN 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 00:50:17,035 WARN 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 00:50:17,038 WARN 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 00:50:17,046 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:50:17,046 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:50:17,051 WARN 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 00:50:17,052 WARN 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 00:50:17,052 WARN 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 00:50:17,052 WARN 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 00:50:17,058 WARN 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 00:50:17,059 WARN 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 00:50:17,060 WARN 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 00:50:17,060 WARN 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 00:50:17,062 WARN 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 00:50:17,072 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 00:50:17,083 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 00:50:17,084 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@243dcc0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:50:17, skipping insertion in model container [2025-03-09 00:50:17,084 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 00:50:17,084 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-03-09 00:50:17,085 INFO L158 Benchmark]: Toolchain (without parser) took 429.78ms. Allocated memory is still 142.6MB. Free memory was 110.8MB in the beginning and 89.3MB in the end (delta: 21.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-09 00:50:17,085 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 201.3MB. Free memory is still 124.0MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 00:50:17,086 INFO L158 Benchmark]: CACSL2BoogieTranslator took 428.34ms. Allocated memory is still 142.6MB. Free memory was 110.8MB in the beginning and 89.3MB in the end (delta: 21.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-09 00:50:17,086 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 201.3MB. Free memory is still 124.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 428.34ms. Allocated memory is still 142.6MB. Free memory was 110.8MB in the beginning and 89.3MB in the end (delta: 21.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 757]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test4-3.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 87dd09ebbd7004650762949ef44f5f810b259dfe76e04f61193dc727167eb435 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 00:50:18,726 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 00:50:18,803 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-03-09 00:50:18,807 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 00:50:18,808 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 00:50:18,832 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 00:50:18,832 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 00:50:18,833 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 00:50:18,833 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 00:50:18,833 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 00:50:18,834 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 00:50:18,834 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 00:50:18,834 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 00:50:18,834 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 00:50:18,835 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 00:50:18,835 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 00:50:18,835 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 00:50:18,835 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 00:50:18,835 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 00:50:18,835 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 00:50:18,835 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-09 00:50:18,835 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-09 00:50:18,836 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-09 00:50:18,836 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 00:50:18,836 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-09 00:50:18,836 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-09 00:50:18,836 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-09 00:50:18,836 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 00:50:18,836 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 00:50:18,836 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 00:50:18,836 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 00:50:18,836 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 00:50:18,837 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 00:50:18,837 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 00:50:18,837 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 00:50:18,837 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 00:50:18,837 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 00:50:18,837 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 00:50:18,837 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-09 00:50:18,837 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-09 00:50:18,837 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 00:50:18,838 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 00:50:18,838 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 00:50:18,838 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 00:50:18,838 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 87dd09ebbd7004650762949ef44f5f810b259dfe76e04f61193dc727167eb435 [2025-03-09 00:50:19,075 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 00:50:19,082 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 00:50:19,083 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 00:50:19,085 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 00:50:19,086 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 00:50:19,086 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test4-3.i [2025-03-09 00:50:20,229 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3cd501db/3cd13eef2d904084bf3fcce25963737e/FLAG092aa8006 [2025-03-09 00:50:20,519 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 00:50:20,520 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test4-3.i [2025-03-09 00:50:20,537 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3cd501db/3cd13eef2d904084bf3fcce25963737e/FLAG092aa8006 [2025-03-09 00:50:20,553 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3cd501db/3cd13eef2d904084bf3fcce25963737e [2025-03-09 00:50:20,555 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 00:50:20,557 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 00:50:20,558 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 00:50:20,558 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 00:50:20,561 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 00:50:20,562 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 12:50:20" (1/1) ... [2025-03-09 00:50:20,562 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e4c7981 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:50:20, skipping insertion in model container [2025-03-09 00:50:20,564 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 12:50:20" (1/1) ... [2025-03-09 00:50:20,598 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 00:50:20,831 WARN 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 00:50:20,860 WARN 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 00:50:20,864 WARN 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 00:50:20,867 WARN 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 00:50:20,871 WARN 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 00:50:20,896 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 00:50:20,897 WARN 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 00:50:20,899 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:50:20,903 WARN 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 00:50:20,909 WARN 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 00:50:20,910 WARN 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 00:50:20,911 WARN 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 00:50:20,912 WARN 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 00:50:20,913 WARN 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 00:50:20,913 WARN 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 00:50:20,917 WARN 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 00:50:20,918 WARN 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 00:50:20,918 WARN 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 00:50:20,922 WARN 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 00:50:20,927 WARN 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 00:50:20,931 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 00:50:20,943 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-03-09 00:50:20,955 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 00:50:20,979 WARN 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 00:50:20,993 WARN 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 00:50:20,996 WARN 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 00:50:20,998 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:50:21,000 WARN 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 00:50:21,018 WARN 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 00:50:21,020 WARN 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 00:50:21,021 WARN 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 00:50:21,023 WARN 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 00:50:21,029 WARN 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 00:50:21,031 WARN 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 00:50:21,034 WARN 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 00:50:21,034 WARN 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 00:50:21,035 WARN 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 00:50:21,037 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:50:21,041 WARN 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 00:50:21,042 WARN 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 00:50:21,043 WARN 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 00:50:21,043 WARN 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 00:50:21,045 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:50:21,048 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 00:50:21,052 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 00:50:21,123 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 00:50:21,154 INFO L204 MainTranslator]: Completed translation [2025-03-09 00:50:21,155 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:50:21 WrapperNode [2025-03-09 00:50:21,156 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 00:50:21,157 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 00:50:21,157 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 00:50:21,157 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 00:50:21,161 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:50:21" (1/1) ... [2025-03-09 00:50:21,186 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:50:21" (1/1) ... [2025-03-09 00:50:21,252 INFO L138 Inliner]: procedures = 179, calls = 425, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1401 [2025-03-09 00:50:21,253 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 00:50:21,253 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 00:50:21,253 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 00:50:21,254 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 00:50:21,259 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:50:21" (1/1) ... [2025-03-09 00:50:21,260 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:50:21" (1/1) ... [2025-03-09 00:50:21,269 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:50:21" (1/1) ... [2025-03-09 00:50:21,363 INFO L175 MemorySlicer]: Split 403 memory accesses to 2 slices as follows [2, 401]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 98 writes are split as follows [0, 98]. [2025-03-09 00:50:21,363 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:50:21" (1/1) ... [2025-03-09 00:50:21,363 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:50:21" (1/1) ... [2025-03-09 00:50:21,396 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:50:21" (1/1) ... [2025-03-09 00:50:21,399 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:50:21" (1/1) ... [2025-03-09 00:50:21,403 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:50:21" (1/1) ... [2025-03-09 00:50:21,406 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:50:21" (1/1) ... [2025-03-09 00:50:21,413 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 00:50:21,413 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 00:50:21,413 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 00:50:21,413 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 00:50:21,414 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:50:21" (1/1) ... [2025-03-09 00:50:21,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 00:50:21,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:50:21,443 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 00:50:21,447 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 00:50:21,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2025-03-09 00:50:21,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2025-03-09 00:50:21,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-03-09 00:50:21,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-03-09 00:50:21,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-03-09 00:50:21,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-03-09 00:50:21,463 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-03-09 00:50:21,463 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-03-09 00:50:21,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-09 00:50:21,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 00:50:21,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-09 00:50:21,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-09 00:50:21,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-09 00:50:21,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-09 00:50:21,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-09 00:50:21,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-03-09 00:50:21,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-03-09 00:50:21,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-09 00:50:21,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-03-09 00:50:21,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 00:50:21,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 00:50:21,639 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 00:50:21,640 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 00:50:25,220 INFO L? ?]: Removed 1737 outVars from TransFormulas that were not future-live. [2025-03-09 00:50:25,221 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 00:50:25,257 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 00:50:25,257 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 00:50:25,258 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 12:50:25 BoogieIcfgContainer [2025-03-09 00:50:25,258 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 00:50:25,260 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 00:50:25,260 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 00:50:25,263 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 00:50:25,263 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 12:50:20" (1/3) ... [2025-03-09 00:50:25,265 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fc31deb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 12:50:25, skipping insertion in model container [2025-03-09 00:50:25,265 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:50:21" (2/3) ... [2025-03-09 00:50:25,265 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fc31deb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 12:50:25, skipping insertion in model container [2025-03-09 00:50:25,266 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 12:50:25" (3/3) ... [2025-03-09 00:50:25,267 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_SFH_nondet_test4-3.i [2025-03-09 00:50:25,276 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 00:50:25,277 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_SFH_nondet_test4-3.i that has 3 procedures, 1606 locations, 1 initial locations, 43 loop locations, and 831 error locations. [2025-03-09 00:50:25,328 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 00:50:25,338 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;@294fc526, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 00:50:25,339 INFO L334 AbstractCegarLoop]: Starting to check reachability of 831 error locations. [2025-03-09 00:50:25,347 INFO L276 IsEmpty]: Start isEmpty. Operand has 1601 states, 768 states have (on average 2.2682291666666665) internal successors, (1742), 1593 states have internal predecessors, (1742), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-03-09 00:50:25,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-03-09 00:50:25,352 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:50:25,352 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-03-09 00:50:25,353 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-03-09 00:50:25,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:50:25,356 INFO L85 PathProgramCache]: Analyzing trace with hash 54946612, now seen corresponding path program 1 times [2025-03-09 00:50:25,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:50:25,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1495199514] [2025-03-09 00:50:25,363 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:50:25,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:50:25,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:50:25,366 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 00:50:25,369 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 00:50:25,502 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-09 00:50:25,505 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-09 00:50:25,506 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:50:25,506 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:50:25,507 INFO L256 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-09 00:50:25,510 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:50:25,529 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 00:50:25,529 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:50:25,530 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:50:25,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495199514] [2025-03-09 00:50:25,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495199514] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:50:25,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:50:25,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 00:50:25,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484077145] [2025-03-09 00:50:25,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:50:25,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 00:50:25,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:50:25,549 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 00:50:25,549 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:50:25,552 INFO L87 Difference]: Start difference. First operand has 1601 states, 768 states have (on average 2.2682291666666665) internal successors, (1742), 1593 states have internal predecessors, (1742), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:50:27,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:50:27,202 INFO L93 Difference]: Finished difference Result 1959 states and 2054 transitions. [2025-03-09 00:50:27,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 00:50:27,203 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2025-03-09 00:50:27,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:50:27,214 INFO L225 Difference]: With dead ends: 1959 [2025-03-09 00:50:27,214 INFO L226 Difference]: Without dead ends: 1956 [2025-03-09 00:50:27,216 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:50:27,217 INFO L435 NwaCegarLoop]: 1647 mSDtfsCounter, 394 mSDsluCounter, 836 mSDsCounter, 0 mSdLazyCounter, 1015 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 2483 SdHoareTripleChecker+Invalid, 1015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-03-09 00:50:27,218 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [394 Valid, 2483 Invalid, 1015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1015 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-03-09 00:50:27,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1956 states. [2025-03-09 00:50:27,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1956 to 1597. [2025-03-09 00:50:27,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1597 states, 775 states have (on average 2.1561290322580646) internal successors, (1671), 1589 states have internal predecessors, (1671), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-03-09 00:50:27,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1597 states to 1597 states and 1683 transitions. [2025-03-09 00:50:27,287 INFO L78 Accepts]: Start accepts. Automaton has 1597 states and 1683 transitions. Word has length 4 [2025-03-09 00:50:27,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:50:27,287 INFO L471 AbstractCegarLoop]: Abstraction has 1597 states and 1683 transitions. [2025-03-09 00:50:27,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:50:27,287 INFO L276 IsEmpty]: Start isEmpty. Operand 1597 states and 1683 transitions. [2025-03-09 00:50:27,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-03-09 00:50:27,287 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:50:27,287 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-09 00:50:27,294 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 00:50:27,492 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 00:50:27,492 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr829REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-03-09 00:50:27,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:50:27,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1265871320, now seen corresponding path program 1 times [2025-03-09 00:50:27,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:50:27,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [115771058] [2025-03-09 00:50:27,493 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:50:27,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:50:27,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:50:27,495 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 00:50:27,496 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 00:50:27,609 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-09 00:50:27,613 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-09 00:50:27,613 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:50:27,613 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:50:27,615 INFO L256 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 00:50:27,616 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:50:27,642 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 00:50:27,649 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 00:50:27,649 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:50:27,649 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:50:27,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115771058] [2025-03-09 00:50:27,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115771058] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:50:27,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:50:27,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 00:50:27,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662957082] [2025-03-09 00:50:27,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:50:27,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 00:50:27,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:50:27,650 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 00:50:27,650 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:50:27,650 INFO L87 Difference]: Start difference. First operand 1597 states and 1683 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:50:29,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:50:29,216 INFO L93 Difference]: Finished difference Result 1503 states and 1587 transitions. [2025-03-09 00:50:29,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 00:50:29,217 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2025-03-09 00:50:29,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:50:29,222 INFO L225 Difference]: With dead ends: 1503 [2025-03-09 00:50:29,223 INFO L226 Difference]: Without dead ends: 1503 [2025-03-09 00:50:29,223 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:50:29,223 INFO L435 NwaCegarLoop]: 947 mSDtfsCounter, 1022 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 935 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1028 SdHoareTripleChecker+Valid, 1147 SdHoareTripleChecker+Invalid, 1037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-03-09 00:50:29,224 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1028 Valid, 1147 Invalid, 1037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 935 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-03-09 00:50:29,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1503 states. [2025-03-09 00:50:29,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1503 to 1503. [2025-03-09 00:50:29,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1503 states, 775 states have (on average 2.032258064516129) internal successors, (1575), 1495 states have internal predecessors, (1575), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-03-09 00:50:29,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1503 states to 1503 states and 1587 transitions. [2025-03-09 00:50:29,253 INFO L78 Accepts]: Start accepts. Automaton has 1503 states and 1587 transitions. Word has length 6 [2025-03-09 00:50:29,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:50:29,253 INFO L471 AbstractCegarLoop]: Abstraction has 1503 states and 1587 transitions. [2025-03-09 00:50:29,253 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:50:29,253 INFO L276 IsEmpty]: Start isEmpty. Operand 1503 states and 1587 transitions. [2025-03-09 00:50:29,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-03-09 00:50:29,254 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:50:29,254 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-09 00:50:29,260 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 00:50:29,454 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 00:50:29,455 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr830REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-03-09 00:50:29,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:50:29,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1265871321, now seen corresponding path program 1 times [2025-03-09 00:50:29,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:50:29,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [535170353] [2025-03-09 00:50:29,455 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:50:29,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:50:29,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:50:29,459 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 00:50:29,460 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 00:50:29,564 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-09 00:50:29,568 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-09 00:50:29,568 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:50:29,568 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:50:29,570 INFO L256 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 00:50:29,575 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:50:29,585 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 00:50:29,602 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 00:50:29,602 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:50:29,603 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:50:29,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535170353] [2025-03-09 00:50:29,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535170353] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:50:29,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:50:29,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 00:50:29,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002520679] [2025-03-09 00:50:29,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:50:29,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 00:50:29,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:50:29,604 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 00:50:29,604 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:50:29,604 INFO L87 Difference]: Start difference. First operand 1503 states and 1587 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:50:31,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:50:31,619 INFO L93 Difference]: Finished difference Result 1820 states and 1924 transitions. [2025-03-09 00:50:31,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 00:50:31,619 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2025-03-09 00:50:31,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:50:31,624 INFO L225 Difference]: With dead ends: 1820 [2025-03-09 00:50:31,624 INFO L226 Difference]: Without dead ends: 1820 [2025-03-09 00:50:31,624 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:50:31,625 INFO L435 NwaCegarLoop]: 1313 mSDtfsCounter, 517 mSDsluCounter, 638 mSDsCounter, 0 mSdLazyCounter, 973 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 517 SdHoareTripleChecker+Valid, 1951 SdHoareTripleChecker+Invalid, 998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-03-09 00:50:31,626 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [517 Valid, 1951 Invalid, 998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 973 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-03-09 00:50:31,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1820 states. [2025-03-09 00:50:31,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1820 to 1668. [2025-03-09 00:50:31,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1668 states, 950 states have (on average 1.9926315789473685) internal successors, (1893), 1660 states have internal predecessors, (1893), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-03-09 00:50:31,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1668 states to 1668 states and 1905 transitions. [2025-03-09 00:50:31,648 INFO L78 Accepts]: Start accepts. Automaton has 1668 states and 1905 transitions. Word has length 6 [2025-03-09 00:50:31,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:50:31,648 INFO L471 AbstractCegarLoop]: Abstraction has 1668 states and 1905 transitions. [2025-03-09 00:50:31,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:50:31,649 INFO L276 IsEmpty]: Start isEmpty. Operand 1668 states and 1905 transitions. [2025-03-09 00:50:31,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-03-09 00:50:31,649 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:50:31,649 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-09 00:50:31,658 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 00:50:31,853 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 00:50:31,853 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr209REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-03-09 00:50:31,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:50:31,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1264584393, now seen corresponding path program 1 times [2025-03-09 00:50:31,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:50:31,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1142489294] [2025-03-09 00:50:31,854 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:50:31,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:50:31,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:50:31,856 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 00:50:31,858 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 00:50:31,953 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-09 00:50:31,955 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-09 00:50:31,955 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:50:31,955 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:50:31,956 INFO L256 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 00:50:31,957 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:50:31,987 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 00:50:31,987 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:50:31,987 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:50:31,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142489294] [2025-03-09 00:50:31,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142489294] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:50:31,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:50:31,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:50:31,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144118027] [2025-03-09 00:50:31,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:50:31,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:50:31,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:50:31,988 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:50:31,988 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:50:31,988 INFO L87 Difference]: Start difference. First operand 1668 states and 1905 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:50:32,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:50:32,455 INFO L93 Difference]: Finished difference Result 2430 states and 2793 transitions. [2025-03-09 00:50:32,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:50:32,458 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2025-03-09 00:50:32,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:50:32,463 INFO L225 Difference]: With dead ends: 2430 [2025-03-09 00:50:32,463 INFO L226 Difference]: Without dead ends: 2430 [2025-03-09 00:50:32,464 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:50:32,465 INFO L435 NwaCegarLoop]: 1546 mSDtfsCounter, 686 mSDsluCounter, 2847 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 4393 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-09 00:50:32,465 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [689 Valid, 4393 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-09 00:50:32,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2430 states. [2025-03-09 00:50:32,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2430 to 2131. [2025-03-09 00:50:32,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2131 states, 1413 states have (on average 1.9639065817409767) internal successors, (2775), 2120 states have internal predecessors, (2775), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-03-09 00:50:32,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2131 states to 2131 states and 2793 transitions. [2025-03-09 00:50:32,498 INFO L78 Accepts]: Start accepts. Automaton has 2131 states and 2793 transitions. Word has length 6 [2025-03-09 00:50:32,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:50:32,498 INFO L471 AbstractCegarLoop]: Abstraction has 2131 states and 2793 transitions. [2025-03-09 00:50:32,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:50:32,498 INFO L276 IsEmpty]: Start isEmpty. Operand 2131 states and 2793 transitions. [2025-03-09 00:50:32,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-03-09 00:50:32,498 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:50:32,498 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:50:32,508 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 00:50:32,699 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 00:50:32,699 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr202REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-03-09 00:50:32,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:50:32,700 INFO L85 PathProgramCache]: Analyzing trace with hash 547387165, now seen corresponding path program 1 times [2025-03-09 00:50:32,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:50:32,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [511872382] [2025-03-09 00:50:32,700 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:50:32,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:50:32,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:50:32,702 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 00:50:32,702 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 00:50:32,810 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 00:50:32,814 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 00:50:32,815 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:50:32,815 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:50:32,816 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 00:50:32,818 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:50:32,848 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 00:50:32,849 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:50:32,849 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:50:32,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511872382] [2025-03-09 00:50:32,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511872382] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:50:32,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:50:32,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 00:50:32,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009019373] [2025-03-09 00:50:32,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:50:32,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 00:50:32,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:50:32,850 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 00:50:32,850 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:50:32,851 INFO L87 Difference]: Start difference. First operand 2131 states and 2793 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:50:33,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:50:33,029 INFO L93 Difference]: Finished difference Result 2388 states and 2922 transitions. [2025-03-09 00:50:33,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 00:50:33,030 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2025-03-09 00:50:33,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:50:33,036 INFO L225 Difference]: With dead ends: 2388 [2025-03-09 00:50:33,036 INFO L226 Difference]: Without dead ends: 2388 [2025-03-09 00:50:33,037 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:50:33,038 INFO L435 NwaCegarLoop]: 1617 mSDtfsCounter, 500 mSDsluCounter, 1481 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 3098 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-09 00:50:33,038 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [500 Valid, 3098 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-09 00:50:33,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2388 states. [2025-03-09 00:50:33,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2388 to 1993. [2025-03-09 00:50:33,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1993 states, 1275 states have (on average 1.9749019607843137) internal successors, (2518), 1982 states have internal predecessors, (2518), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-03-09 00:50:33,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1993 states to 1993 states and 2536 transitions. [2025-03-09 00:50:33,085 INFO L78 Accepts]: Start accepts. Automaton has 1993 states and 2536 transitions. Word has length 7 [2025-03-09 00:50:33,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:50:33,086 INFO L471 AbstractCegarLoop]: Abstraction has 1993 states and 2536 transitions. [2025-03-09 00:50:33,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:50:33,086 INFO L276 IsEmpty]: Start isEmpty. Operand 1993 states and 2536 transitions. [2025-03-09 00:50:33,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-03-09 00:50:33,086 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:50:33,086 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:50:33,092 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 00:50:33,286 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 00:50:33,287 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr201REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-03-09 00:50:33,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:50:33,287 INFO L85 PathProgramCache]: Analyzing trace with hash -780387289, now seen corresponding path program 1 times [2025-03-09 00:50:33,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:50:33,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1275430088] [2025-03-09 00:50:33,287 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:50:33,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:50:33,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:50:33,289 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 00:50:33,290 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 00:50:33,375 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-09 00:50:33,379 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-09 00:50:33,379 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:50:33,379 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:50:33,380 INFO L256 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 00:50:33,381 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:50:33,430 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 00:50:33,430 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:50:33,430 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:50:33,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275430088] [2025-03-09 00:50:33,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275430088] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:50:33,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:50:33,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:50:33,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099508725] [2025-03-09 00:50:33,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:50:33,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:50:33,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:50:33,431 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:50:33,431 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:50:33,432 INFO L87 Difference]: Start difference. First operand 1993 states and 2536 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:50:34,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:50:34,061 INFO L93 Difference]: Finished difference Result 2388 states and 2921 transitions. [2025-03-09 00:50:34,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:50:34,062 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-03-09 00:50:34,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:50:34,067 INFO L225 Difference]: With dead ends: 2388 [2025-03-09 00:50:34,067 INFO L226 Difference]: Without dead ends: 2384 [2025-03-09 00:50:34,068 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 00:50:34,068 INFO L435 NwaCegarLoop]: 1617 mSDtfsCounter, 502 mSDsluCounter, 2882 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 502 SdHoareTripleChecker+Valid, 4499 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-09 00:50:34,068 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [502 Valid, 4499 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-09 00:50:34,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2384 states. [2025-03-09 00:50:34,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2384 to 1989. [2025-03-09 00:50:34,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1989 states, 1271 states have (on average 1.977183320220299) internal successors, (2513), 1978 states have internal predecessors, (2513), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-03-09 00:50:34,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1989 states to 1989 states and 2531 transitions. [2025-03-09 00:50:34,102 INFO L78 Accepts]: Start accepts. Automaton has 1989 states and 2531 transitions. Word has length 10 [2025-03-09 00:50:34,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:50:34,103 INFO L471 AbstractCegarLoop]: Abstraction has 1989 states and 2531 transitions. [2025-03-09 00:50:34,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:50:34,103 INFO L276 IsEmpty]: Start isEmpty. Operand 1989 states and 2531 transitions. [2025-03-09 00:50:34,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-03-09 00:50:34,103 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:50:34,104 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:50:34,111 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 00:50:34,304 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 00:50:34,304 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr825REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-03-09 00:50:34,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:50:34,304 INFO L85 PathProgramCache]: Analyzing trace with hash 424147984, now seen corresponding path program 1 times [2025-03-09 00:50:34,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:50:34,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1066804276] [2025-03-09 00:50:34,305 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:50:34,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:50:34,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:50:34,308 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 00:50:34,309 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 00:50:34,422 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-09 00:50:34,437 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-09 00:50:34,437 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:50:34,437 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:50:34,439 INFO L256 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 00:50:34,441 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:50:34,446 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 00:50:34,471 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 00:50:34,471 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:50:34,471 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:50:34,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066804276] [2025-03-09 00:50:34,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066804276] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:50:34,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:50:34,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 00:50:34,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945938151] [2025-03-09 00:50:34,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:50:34,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:50:34,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:50:34,472 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:50:34,472 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:50:34,472 INFO L87 Difference]: Start difference. First operand 1989 states and 2531 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:50:36,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:50:36,383 INFO L93 Difference]: Finished difference Result 1974 states and 2493 transitions. [2025-03-09 00:50:36,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:50:36,383 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2025-03-09 00:50:36,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:50:36,387 INFO L225 Difference]: With dead ends: 1974 [2025-03-09 00:50:36,388 INFO L226 Difference]: Without dead ends: 1974 [2025-03-09 00:50:36,388 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 00:50:36,389 INFO L435 NwaCegarLoop]: 922 mSDtfsCounter, 1073 mSDsluCounter, 851 mSDsCounter, 0 mSdLazyCounter, 1718 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1079 SdHoareTripleChecker+Valid, 1773 SdHoareTripleChecker+Invalid, 1750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-03-09 00:50:36,389 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1079 Valid, 1773 Invalid, 1750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1718 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-03-09 00:50:36,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1974 states. [2025-03-09 00:50:36,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1974 to 1966. [2025-03-09 00:50:36,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1966 states, 1271 states have (on average 1.9409913453973249) internal successors, (2467), 1955 states have internal predecessors, (2467), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-03-09 00:50:36,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1966 states to 1966 states and 2485 transitions. [2025-03-09 00:50:36,415 INFO L78 Accepts]: Start accepts. Automaton has 1966 states and 2485 transitions. Word has length 11 [2025-03-09 00:50:36,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:50:36,415 INFO L471 AbstractCegarLoop]: Abstraction has 1966 states and 2485 transitions. [2025-03-09 00:50:36,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:50:36,415 INFO L276 IsEmpty]: Start isEmpty. Operand 1966 states and 2485 transitions. [2025-03-09 00:50:36,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-03-09 00:50:36,416 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:50:36,416 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:50:36,423 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 00:50:36,616 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 00:50:36,617 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr826REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-03-09 00:50:36,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:50:36,617 INFO L85 PathProgramCache]: Analyzing trace with hash 424147985, now seen corresponding path program 1 times [2025-03-09 00:50:36,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:50:36,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1050394321] [2025-03-09 00:50:36,618 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:50:36,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:50:36,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:50:36,620 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 00:50:36,622 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 00:50:36,720 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-09 00:50:36,738 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-09 00:50:36,739 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:50:36,739 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:50:36,742 INFO L256 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-09 00:50:36,744 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:50:36,748 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 00:50:36,796 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 00:50:36,796 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:50:36,797 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:50:36,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050394321] [2025-03-09 00:50:36,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050394321] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:50:36,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:50:36,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 00:50:36,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105579481] [2025-03-09 00:50:36,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:50:36,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:50:36,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:50:36,797 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:50:36,797 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:50:36,797 INFO L87 Difference]: Start difference. First operand 1966 states and 2485 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:50:39,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:50:39,583 INFO L93 Difference]: Finished difference Result 2248 states and 2658 transitions. [2025-03-09 00:50:39,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:50:39,583 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2025-03-09 00:50:39,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:50:39,587 INFO L225 Difference]: With dead ends: 2248 [2025-03-09 00:50:39,587 INFO L226 Difference]: Without dead ends: 2248 [2025-03-09 00:50:39,588 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 00:50:39,588 INFO L435 NwaCegarLoop]: 1595 mSDtfsCounter, 641 mSDsluCounter, 1540 mSDsCounter, 0 mSdLazyCounter, 1908 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 641 SdHoareTripleChecker+Valid, 3135 SdHoareTripleChecker+Invalid, 1930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2025-03-09 00:50:39,588 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [641 Valid, 3135 Invalid, 1930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1908 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2025-03-09 00:50:39,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2248 states. [2025-03-09 00:50:39,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2248 to 2080. [2025-03-09 00:50:39,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2080 states, 1385 states have (on average 1.8808664259927799) internal successors, (2605), 2069 states have internal predecessors, (2605), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-03-09 00:50:39,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2080 states to 2080 states and 2623 transitions. [2025-03-09 00:50:39,613 INFO L78 Accepts]: Start accepts. Automaton has 2080 states and 2623 transitions. Word has length 11 [2025-03-09 00:50:39,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:50:39,613 INFO L471 AbstractCegarLoop]: Abstraction has 2080 states and 2623 transitions. [2025-03-09 00:50:39,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:50:39,613 INFO L276 IsEmpty]: Start isEmpty. Operand 2080 states and 2623 transitions. [2025-03-09 00:50:39,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-03-09 00:50:39,614 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:50:39,614 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:50:39,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-03-09 00:50:39,814 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 00:50:39,815 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr826REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-03-09 00:50:39,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:50:39,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1443327396, now seen corresponding path program 1 times [2025-03-09 00:50:39,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:50:39,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1385519858] [2025-03-09 00:50:39,815 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:50:39,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:50:39,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:50:39,817 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 00:50:39,818 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 00:50:39,912 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-03-09 00:50:39,955 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-03-09 00:50:39,955 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:50:39,955 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:50:39,962 INFO L256 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-09 00:50:39,964 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:50:39,971 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 00:50:40,106 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 00:50:40,106 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 00:50:40,363 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 00:50:40,364 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:50:40,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385519858] [2025-03-09 00:50:40,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385519858] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 00:50:40,364 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-09 00:50:40,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2025-03-09 00:50:40,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344095165] [2025-03-09 00:50:40,364 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-09 00:50:40,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-09 00:50:40,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:50:40,365 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-09 00:50:40,365 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-09 00:50:40,365 INFO L87 Difference]: Start difference. First operand 2080 states and 2623 transitions. Second operand has 8 states, 7 states have (on average 8.142857142857142) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:50:48,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:50:48,771 INFO L93 Difference]: Finished difference Result 2635 states and 3188 transitions. [2025-03-09 00:50:48,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-09 00:50:48,771 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.142857142857142) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2025-03-09 00:50:48,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:50:48,777 INFO L225 Difference]: With dead ends: 2635 [2025-03-09 00:50:48,778 INFO L226 Difference]: Without dead ends: 2635 [2025-03-09 00:50:48,778 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2025-03-09 00:50:48,778 INFO L435 NwaCegarLoop]: 1636 mSDtfsCounter, 1991 mSDsluCounter, 4297 mSDsCounter, 0 mSdLazyCounter, 4925 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1993 SdHoareTripleChecker+Valid, 5933 SdHoareTripleChecker+Invalid, 4953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 4925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2025-03-09 00:50:48,778 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1993 Valid, 5933 Invalid, 4953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 4925 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2025-03-09 00:50:48,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2635 states. [2025-03-09 00:50:48,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2635 to 2244. [2025-03-09 00:50:48,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2244 states, 1549 states have (on average 1.8315041962556489) internal successors, (2837), 2233 states have internal predecessors, (2837), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-03-09 00:50:48,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2244 states to 2244 states and 2855 transitions. [2025-03-09 00:50:48,807 INFO L78 Accepts]: Start accepts. Automaton has 2244 states and 2855 transitions. Word has length 30 [2025-03-09 00:50:48,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:50:48,807 INFO L471 AbstractCegarLoop]: Abstraction has 2244 states and 2855 transitions. [2025-03-09 00:50:48,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.142857142857142) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:50:48,807 INFO L276 IsEmpty]: Start isEmpty. Operand 2244 states and 2855 transitions. [2025-03-09 00:50:48,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2025-03-09 00:50:48,809 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:50:48,809 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:50:48,819 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 00:50:49,015 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 00:50:49,015 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr744REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-03-09 00:50:49,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:50:49,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1648050360, now seen corresponding path program 1 times [2025-03-09 00:50:49,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:50:49,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [557837804] [2025-03-09 00:50:49,016 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:50:49,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:50:49,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:50:49,019 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 00:50:49,020 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 00:50:49,134 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-03-09 00:50:49,179 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-03-09 00:50:49,180 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:50:49,180 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:50:49,186 INFO L256 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 00:50:49,188 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:50:49,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:50:49,219 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:50:49,219 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:50:49,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557837804] [2025-03-09 00:50:49,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [557837804] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:50:49,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:50:49,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:50:49,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556896286] [2025-03-09 00:50:49,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:50:49,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:50:49,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:50:49,220 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:50:49,220 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:50:49,220 INFO L87 Difference]: Start difference. First operand 2244 states and 2855 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:50:49,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:50:49,274 INFO L93 Difference]: Finished difference Result 1933 states and 2419 transitions. [2025-03-09 00:50:49,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 00:50:49,274 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2025-03-09 00:50:49,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:50:49,279 INFO L225 Difference]: With dead ends: 1933 [2025-03-09 00:50:49,279 INFO L226 Difference]: Without dead ends: 1933 [2025-03-09 00:50:49,280 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:50:49,280 INFO L435 NwaCegarLoop]: 1465 mSDtfsCounter, 56 mSDsluCounter, 2857 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 4322 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-09 00:50:49,280 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 4322 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-09 00:50:49,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1933 states. [2025-03-09 00:50:49,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1933 to 1931. [2025-03-09 00:50:49,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1931 states, 1259 states have (on average 1.9054805401111994) internal successors, (2399), 1920 states have internal predecessors, (2399), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-03-09 00:50:49,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1931 states to 1931 states and 2417 transitions. [2025-03-09 00:50:49,319 INFO L78 Accepts]: Start accepts. Automaton has 1931 states and 2417 transitions. Word has length 45 [2025-03-09 00:50:49,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:50:49,320 INFO L471 AbstractCegarLoop]: Abstraction has 1931 states and 2417 transitions. [2025-03-09 00:50:49,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:50:49,320 INFO L276 IsEmpty]: Start isEmpty. Operand 1931 states and 2417 transitions. [2025-03-09 00:50:49,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2025-03-09 00:50:49,321 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:50:49,321 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 00:50:49,330 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 00:50:49,521 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 00:50:49,522 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr744REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-03-09 00:50:49,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:50:49,522 INFO L85 PathProgramCache]: Analyzing trace with hash -435719824, now seen corresponding path program 1 times [2025-03-09 00:50:49,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:50:49,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2065298053] [2025-03-09 00:50:49,523 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:50:49,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:50:49,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:50:49,525 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 00:50:49,526 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 00:50:49,641 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 53 statements into 1 equivalence classes. [2025-03-09 00:50:49,705 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 53 of 53 statements. [2025-03-09 00:50:49,705 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:50:49,705 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:50:49,714 INFO L256 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-09 00:50:49,720 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:50:49,729 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 00:50:49,736 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 00:50:50,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-09 00:50:50,037 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 00:50:50,050 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-09 00:50:50,052 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 00:50:50,064 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 00:50:50,065 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:50:50,065 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:50:50,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065298053] [2025-03-09 00:50:50,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065298053] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:50:50,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:50:50,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 00:50:50,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126423858] [2025-03-09 00:50:50,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:50:50,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:50:50,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:50:50,066 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:50:50,066 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:50:50,066 INFO L87 Difference]: Start difference. First operand 1931 states and 2417 transitions. Second operand has 4 states, 3 states have (on average 17.666666666666668) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:50:51,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:50:51,729 INFO L93 Difference]: Finished difference Result 1847 states and 2292 transitions. [2025-03-09 00:50:51,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:50:51,730 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 17.666666666666668) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2025-03-09 00:50:51,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:50:51,734 INFO L225 Difference]: With dead ends: 1847 [2025-03-09 00:50:51,734 INFO L226 Difference]: Without dead ends: 1847 [2025-03-09 00:50:51,734 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:50:51,734 INFO L435 NwaCegarLoop]: 725 mSDtfsCounter, 1796 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 893 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1802 SdHoareTripleChecker+Valid, 942 SdHoareTripleChecker+Invalid, 995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-03-09 00:50:51,734 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1802 Valid, 942 Invalid, 995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 893 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-03-09 00:50:51,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1847 states. [2025-03-09 00:50:51,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1847 to 1672. [2025-03-09 00:50:51,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1672 states, 1084 states have (on average 1.7952029520295203) internal successors, (1946), 1661 states have internal predecessors, (1946), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-03-09 00:50:51,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1672 states to 1672 states and 1964 transitions. [2025-03-09 00:50:51,749 INFO L78 Accepts]: Start accepts. Automaton has 1672 states and 1964 transitions. Word has length 53 [2025-03-09 00:50:51,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:50:51,749 INFO L471 AbstractCegarLoop]: Abstraction has 1672 states and 1964 transitions. [2025-03-09 00:50:51,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 17.666666666666668) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:50:51,750 INFO L276 IsEmpty]: Start isEmpty. Operand 1672 states and 1964 transitions. [2025-03-09 00:50:51,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2025-03-09 00:50:51,750 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:50:51,750 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 00:50:51,760 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-03-09 00:50:51,955 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 00:50:51,955 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr737REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-03-09 00:50:51,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:50:51,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1394758388, now seen corresponding path program 1 times [2025-03-09 00:50:51,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:50:51,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1259555586] [2025-03-09 00:50:51,956 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:50:51,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:50:51,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:50:51,958 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 00:50:51,959 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 00:50:52,076 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-03-09 00:50:52,130 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-03-09 00:50:52,131 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:50:52,131 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:50:52,138 INFO L256 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-09 00:50:52,140 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:50:52,144 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 00:50:52,152 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 00:50:52,165 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 00:50:52,171 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 00:50:52,171 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:50:52,171 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:50:52,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259555586] [2025-03-09 00:50:52,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259555586] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:50:52,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:50:52,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:50:52,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705373969] [2025-03-09 00:50:52,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:50:52,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 00:50:52,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:50:52,172 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 00:50:52,172 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:50:52,172 INFO L87 Difference]: Start difference. First operand 1672 states and 1964 transitions. Second operand has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:50:54,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:50:54,328 INFO L93 Difference]: Finished difference Result 1671 states and 1962 transitions. [2025-03-09 00:50:54,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 00:50:54,329 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2025-03-09 00:50:54,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:50:54,333 INFO L225 Difference]: With dead ends: 1671 [2025-03-09 00:50:54,333 INFO L226 Difference]: Without dead ends: 1671 [2025-03-09 00:50:54,333 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-09 00:50:54,334 INFO L435 NwaCegarLoop]: 1391 mSDtfsCounter, 2 mSDsluCounter, 2091 mSDsCounter, 0 mSdLazyCounter, 2089 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3482 SdHoareTripleChecker+Invalid, 2090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2025-03-09 00:50:54,334 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3482 Invalid, 2090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2089 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2025-03-09 00:50:54,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1671 states. [2025-03-09 00:50:54,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1671 to 1671. [2025-03-09 00:50:54,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1671 states, 1084 states have (on average 1.7933579335793357) internal successors, (1944), 1660 states have internal predecessors, (1944), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-03-09 00:50:54,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1671 states to 1671 states and 1962 transitions. [2025-03-09 00:50:54,353 INFO L78 Accepts]: Start accepts. Automaton has 1671 states and 1962 transitions. Word has length 58 [2025-03-09 00:50:54,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:50:54,354 INFO L471 AbstractCegarLoop]: Abstraction has 1671 states and 1962 transitions. [2025-03-09 00:50:54,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:50:54,354 INFO L276 IsEmpty]: Start isEmpty. Operand 1671 states and 1962 transitions. [2025-03-09 00:50:54,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2025-03-09 00:50:54,355 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:50:54,355 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 00:50:54,371 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-03-09 00:50:54,556 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 00:50:54,556 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr738REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-03-09 00:50:54,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:50:54,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1394758387, now seen corresponding path program 1 times [2025-03-09 00:50:54,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:50:54,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1068166312] [2025-03-09 00:50:54,557 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:50:54,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:50:54,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:50:54,559 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 00:50:54,560 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 00:50:54,671 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-03-09 00:50:54,723 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-03-09 00:50:54,723 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:50:54,723 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:50:54,733 INFO L256 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-09 00:50:54,735 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:50:54,742 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 00:50:54,763 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 00:50:54,768 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 00:50:54,791 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 00:50:54,803 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 00:50:54,803 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:50:54,803 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:50:54,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068166312] [2025-03-09 00:50:54,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1068166312] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:50:54,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:50:54,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:50:54,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026126728] [2025-03-09 00:50:54,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:50:54,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 00:50:54,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:50:54,804 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 00:50:54,804 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:50:54,804 INFO L87 Difference]: Start difference. First operand 1671 states and 1962 transitions. Second operand has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:50:57,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:50:57,422 INFO L93 Difference]: Finished difference Result 1670 states and 1960 transitions. [2025-03-09 00:50:57,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 00:50:57,423 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2025-03-09 00:50:57,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:50:57,426 INFO L225 Difference]: With dead ends: 1670 [2025-03-09 00:50:57,426 INFO L226 Difference]: Without dead ends: 1670 [2025-03-09 00:50:57,426 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-09 00:50:57,427 INFO L435 NwaCegarLoop]: 1391 mSDtfsCounter, 1 mSDsluCounter, 2134 mSDsCounter, 0 mSdLazyCounter, 2043 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3525 SdHoareTripleChecker+Invalid, 2044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2025-03-09 00:50:57,427 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 3525 Invalid, 2044 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2043 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2025-03-09 00:50:57,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1670 states. [2025-03-09 00:50:57,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1670 to 1670. [2025-03-09 00:50:57,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1670 states, 1082 states have (on average 1.7948243992606285) internal successors, (1942), 1659 states have internal predecessors, (1942), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-03-09 00:50:57,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1670 states to 1670 states and 1960 transitions. [2025-03-09 00:50:57,443 INFO L78 Accepts]: Start accepts. Automaton has 1670 states and 1960 transitions. Word has length 58 [2025-03-09 00:50:57,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:50:57,444 INFO L471 AbstractCegarLoop]: Abstraction has 1670 states and 1960 transitions. [2025-03-09 00:50:57,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:50:57,444 INFO L276 IsEmpty]: Start isEmpty. Operand 1670 states and 1960 transitions. [2025-03-09 00:50:57,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-03-09 00:50:57,444 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:50:57,444 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 00:50:57,455 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-03-09 00:50:57,650 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 00:50:57,650 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr733REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-03-09 00:50:57,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:50:57,650 INFO L85 PathProgramCache]: Analyzing trace with hash 363016745, now seen corresponding path program 1 times [2025-03-09 00:50:57,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:50:57,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1471763257] [2025-03-09 00:50:57,651 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:50:57,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:50:57,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:50:57,652 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 00:50:57,654 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 00:50:57,782 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-03-09 00:50:57,832 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-03-09 00:50:57,832 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:50:57,832 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:50:57,839 INFO L256 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-09 00:50:57,841 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:50:57,845 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 00:50:57,891 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 00:50:57,900 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 00:50:57,900 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:50:57,900 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:50:57,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471763257] [2025-03-09 00:50:57,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471763257] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:50:57,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:50:57,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-09 00:50:57,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397831425] [2025-03-09 00:50:57,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:50:57,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-09 00:50:57,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:50:57,902 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-09 00:50:57,902 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-09 00:50:57,902 INFO L87 Difference]: Start difference. First operand 1670 states and 1960 transitions. Second operand has 7 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-09 00:51:00,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:51:00,719 INFO L93 Difference]: Finished difference Result 1688 states and 1990 transitions. [2025-03-09 00:51:00,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-09 00:51:00,720 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 66 [2025-03-09 00:51:00,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:51:00,724 INFO L225 Difference]: With dead ends: 1688 [2025-03-09 00:51:00,724 INFO L226 Difference]: Without dead ends: 1688 [2025-03-09 00:51:00,724 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2025-03-09 00:51:00,724 INFO L435 NwaCegarLoop]: 1380 mSDtfsCounter, 6 mSDsluCounter, 4252 mSDsCounter, 0 mSdLazyCounter, 2721 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 5632 SdHoareTripleChecker+Invalid, 2728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 2721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2025-03-09 00:51:00,725 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 5632 Invalid, 2728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 2721 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2025-03-09 00:51:00,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1688 states. [2025-03-09 00:51:00,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1688 to 1679. [2025-03-09 00:51:00,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1679 states, 1090 states have (on average 1.7917431192660551) internal successors, (1953), 1666 states have internal predecessors, (1953), 9 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (18), 11 states have call predecessors, (18), 9 states have call successors, (18) [2025-03-09 00:51:00,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1679 states to 1679 states and 1980 transitions. [2025-03-09 00:51:00,741 INFO L78 Accepts]: Start accepts. Automaton has 1679 states and 1980 transitions. Word has length 66 [2025-03-09 00:51:00,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:51:00,741 INFO L471 AbstractCegarLoop]: Abstraction has 1679 states and 1980 transitions. [2025-03-09 00:51:00,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-09 00:51:00,741 INFO L276 IsEmpty]: Start isEmpty. Operand 1679 states and 1980 transitions. [2025-03-09 00:51:00,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-03-09 00:51:00,742 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:51:00,742 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 00:51:00,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-03-09 00:51:00,942 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 00:51:00,942 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr734REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-03-09 00:51:00,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:51:00,943 INFO L85 PathProgramCache]: Analyzing trace with hash 363016746, now seen corresponding path program 1 times [2025-03-09 00:51:00,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:51:00,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [45094703] [2025-03-09 00:51:00,943 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:51:00,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:51:00,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:51:00,945 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 00:51:00,947 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 00:51:01,071 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-03-09 00:51:01,123 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-03-09 00:51:01,123 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:51:01,123 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:51:01,131 INFO L256 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 00:51:01,132 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:51:01,142 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 00:51:01,142 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:51:01,142 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:51:01,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45094703] [2025-03-09 00:51:01,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45094703] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:51:01,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:51:01,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:51:01,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994199039] [2025-03-09 00:51:01,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:51:01,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:51:01,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:51:01,143 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:51:01,143 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:51:01,143 INFO L87 Difference]: Start difference. First operand 1679 states and 1980 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-09 00:51:01,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:51:01,182 INFO L93 Difference]: Finished difference Result 1673 states and 1966 transitions. [2025-03-09 00:51:01,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:51:01,183 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 66 [2025-03-09 00:51:01,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:51:01,186 INFO L225 Difference]: With dead ends: 1673 [2025-03-09 00:51:01,187 INFO L226 Difference]: Without dead ends: 1673 [2025-03-09 00:51:01,187 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:51:01,187 INFO L435 NwaCegarLoop]: 1390 mSDtfsCounter, 0 mSDsluCounter, 2772 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4162 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-09 00:51:01,187 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4162 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-09 00:51:01,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1673 states. [2025-03-09 00:51:01,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1673 to 1673. [2025-03-09 00:51:01,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1673 states, 1084 states have (on average 1.794280442804428) internal successors, (1945), 1662 states have internal predecessors, (1945), 9 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2025-03-09 00:51:01,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1673 states to 1673 states and 1966 transitions. [2025-03-09 00:51:01,203 INFO L78 Accepts]: Start accepts. Automaton has 1673 states and 1966 transitions. Word has length 66 [2025-03-09 00:51:01,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:51:01,204 INFO L471 AbstractCegarLoop]: Abstraction has 1673 states and 1966 transitions. [2025-03-09 00:51:01,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-09 00:51:01,204 INFO L276 IsEmpty]: Start isEmpty. Operand 1673 states and 1966 transitions. [2025-03-09 00:51:01,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-03-09 00:51:01,204 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:51:01,204 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:51:01,213 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-03-09 00:51:01,404 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 00:51:01,405 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr733REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-03-09 00:51:01,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:51:01,405 INFO L85 PathProgramCache]: Analyzing trace with hash 68435373, now seen corresponding path program 1 times [2025-03-09 00:51:01,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:51:01,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1925045977] [2025-03-09 00:51:01,406 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:51:01,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:51:01,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:51:01,408 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 00:51:01,409 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 00:51:01,524 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-03-09 00:51:01,576 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-03-09 00:51:01,576 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:51:01,576 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:51:01,584 INFO L256 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 00:51:01,586 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:51:01,599 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:51:01,599 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 00:51:01,639 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:51:01,639 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:51:01,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925045977] [2025-03-09 00:51:01,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925045977] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 00:51:01,639 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-09 00:51:01,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2025-03-09 00:51:01,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650401592] [2025-03-09 00:51:01,639 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-09 00:51:01,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-09 00:51:01,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:51:01,639 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-09 00:51:01,640 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-03-09 00:51:01,640 INFO L87 Difference]: Start difference. First operand 1673 states and 1966 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-09 00:51:01,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:51:01,757 INFO L93 Difference]: Finished difference Result 1685 states and 1985 transitions. [2025-03-09 00:51:01,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-09 00:51:01,758 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 67 [2025-03-09 00:51:01,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:51:01,760 INFO L225 Difference]: With dead ends: 1685 [2025-03-09 00:51:01,760 INFO L226 Difference]: Without dead ends: 1685 [2025-03-09 00:51:01,760 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2025-03-09 00:51:01,761 INFO L435 NwaCegarLoop]: 1389 mSDtfsCounter, 8 mSDsluCounter, 4156 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 5545 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-09 00:51:01,761 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 5545 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-09 00:51:01,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1685 states. [2025-03-09 00:51:01,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1685 to 1683. [2025-03-09 00:51:01,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1683 states, 1093 states have (on average 1.7932296431838974) internal successors, (1960), 1671 states have internal predecessors, (1960), 9 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2025-03-09 00:51:01,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1683 states to 1683 states and 1981 transitions. [2025-03-09 00:51:01,777 INFO L78 Accepts]: Start accepts. Automaton has 1683 states and 1981 transitions. Word has length 67 [2025-03-09 00:51:01,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:51:01,777 INFO L471 AbstractCegarLoop]: Abstraction has 1683 states and 1981 transitions. [2025-03-09 00:51:01,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-09 00:51:01,778 INFO L276 IsEmpty]: Start isEmpty. Operand 1683 states and 1981 transitions. [2025-03-09 00:51:01,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2025-03-09 00:51:01,778 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:51:01,778 INFO L218 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:51:01,788 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 00:51:01,978 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 00:51:01,978 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr733REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-03-09 00:51:01,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:51:01,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1353977047, now seen corresponding path program 2 times [2025-03-09 00:51:01,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:51:01,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [453783977] [2025-03-09 00:51:01,979 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 00:51:01,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:51:01,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:51:01,981 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 00:51:01,982 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 00:51:02,116 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 70 statements into 2 equivalence classes. [2025-03-09 00:51:09,148 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 70 of 70 statements. [2025-03-09 00:51:09,149 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 00:51:09,149 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:51:09,163 INFO L256 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-09 00:51:09,164 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:51:09,210 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:51:09,210 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 00:51:09,337 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:51:09,337 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:51:09,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453783977] [2025-03-09 00:51:09,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [453783977] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 00:51:09,337 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-09 00:51:09,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2025-03-09 00:51:09,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96877101] [2025-03-09 00:51:09,338 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-09 00:51:09,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-09 00:51:09,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:51:09,338 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-09 00:51:09,338 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2025-03-09 00:51:09,338 INFO L87 Difference]: Start difference. First operand 1683 states and 1981 transitions. Second operand has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 states have internal predecessors, (75), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-09 00:51:09,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:51:09,712 INFO L93 Difference]: Finished difference Result 1698 states and 2002 transitions. [2025-03-09 00:51:09,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-03-09 00:51:09,713 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 states have internal predecessors, (75), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 70 [2025-03-09 00:51:09,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:51:09,716 INFO L225 Difference]: With dead ends: 1698 [2025-03-09 00:51:09,716 INFO L226 Difference]: Without dead ends: 1692 [2025-03-09 00:51:09,717 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=182, Invalid=324, Unknown=0, NotChecked=0, Total=506 [2025-03-09 00:51:09,717 INFO L435 NwaCegarLoop]: 1390 mSDtfsCounter, 14 mSDsluCounter, 6930 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 8320 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-09 00:51:09,717 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 8320 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-09 00:51:09,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1692 states. [2025-03-09 00:51:09,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1692 to 1692. [2025-03-09 00:51:09,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1692 states, 1102 states have (on average 1.7885662431941924) internal successors, (1971), 1680 states have internal predecessors, (1971), 9 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2025-03-09 00:51:09,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1692 states to 1692 states and 1992 transitions. [2025-03-09 00:51:09,751 INFO L78 Accepts]: Start accepts. Automaton has 1692 states and 1992 transitions. Word has length 70 [2025-03-09 00:51:09,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:51:09,751 INFO L471 AbstractCegarLoop]: Abstraction has 1692 states and 1992 transitions. [2025-03-09 00:51:09,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 states have internal predecessors, (75), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-09 00:51:09,751 INFO L276 IsEmpty]: Start isEmpty. Operand 1692 states and 1992 transitions. [2025-03-09 00:51:09,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2025-03-09 00:51:09,752 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:51:09,752 INFO L218 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:51:09,780 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-03-09 00:51:09,952 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 00:51:09,952 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr733REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 828 more)] === [2025-03-09 00:51:09,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:51:09,953 INFO L85 PathProgramCache]: Analyzing trace with hash 76883113, now seen corresponding path program 3 times [2025-03-09 00:51:09,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:51:09,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1788819109] [2025-03-09 00:51:09,953 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 00:51:09,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:51:09,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:51:09,955 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 00:51:09,956 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 00:51:10,102 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 76 statements into 6 equivalence classes.