./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8fc3dc66 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_JEN_test9-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 961225f1af8bda006e5a86aed07a62a3e426daf2d218eb9a2332372592a548eb --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 13:45:08,165 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 13:45:08,207 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-17 13:45:08,210 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 13:45:08,210 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 13:45:08,225 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 13:45:08,227 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 13:45:08,227 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 13:45:08,228 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 13:45:08,228 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 13:45:08,229 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 13:45:08,229 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 13:45:08,229 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 13:45:08,229 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 13:45:08,229 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 13:45:08,229 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 13:45:08,229 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 13:45:08,230 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 13:45:08,230 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 13:45:08,230 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 13:45:08,230 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-17 13:45:08,230 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-17 13:45:08,230 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-17 13:45:08,230 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 13:45:08,230 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-17 13:45:08,230 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 13:45:08,230 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 13:45:08,230 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 13:45:08,231 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 13:45:08,231 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 13:45:08,231 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 13:45:08,231 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 13:45:08,231 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 13:45:08,231 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 13:45:08,231 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 13:45:08,231 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 13:45:08,231 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 13:45:08,231 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 13:45:08,232 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 13:45:08,232 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 13:45:08,232 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 13:45:08,232 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 13:45:08,232 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 -> 961225f1af8bda006e5a86aed07a62a3e426daf2d218eb9a2332372592a548eb [2025-03-17 13:45:08,462 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 13:45:08,469 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 13:45:08,471 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 13:45:08,472 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 13:45:08,472 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 13:45:08,474 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i [2025-03-17 13:45:09,584 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/013173461/9d12fc1e01b046eeb64cd5845abe27b8/FLAGf68a0b5b1 [2025-03-17 13:45:09,951 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 13:45:09,952 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i [2025-03-17 13:45:09,976 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/013173461/9d12fc1e01b046eeb64cd5845abe27b8/FLAGf68a0b5b1 [2025-03-17 13:45:10,146 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/013173461/9d12fc1e01b046eeb64cd5845abe27b8 [2025-03-17 13:45:10,148 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 13:45:10,149 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 13:45:10,149 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 13:45:10,149 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 13:45:10,152 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 13:45:10,152 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 01:45:10" (1/1) ... [2025-03-17 13:45:10,153 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@119e24fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:45:10, skipping insertion in model container [2025-03-17 13:45:10,153 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 01:45:10" (1/1) ... [2025-03-17 13:45:10,191 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 13:45:10,557 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:45:10,573 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:45:10,576 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:45:10,579 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:45:10,582 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:45:10,603 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:45:10,603 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:45:10,604 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:45:10,606 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:45:10,607 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:45:10,608 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:45:10,609 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:45:10,609 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:45:10,611 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:45:10,615 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:45:10,620 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 13:45:10,629 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) [2025-03-17 13:45:10,630 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@62f2bc04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:45:10, skipping insertion in model container [2025-03-17 13:45:10,630 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 13:45:10,630 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-03-17 13:45:10,632 INFO L158 Benchmark]: Toolchain (without parser) took 482.66ms. Allocated memory is still 167.8MB. Free memory was 117.8MB in the beginning and 87.0MB in the end (delta: 30.8MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-03-17 13:45:10,632 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 201.3MB. Free memory is still 118.5MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 13:45:10,632 INFO L158 Benchmark]: CACSL2BoogieTranslator took 481.14ms. Allocated memory is still 167.8MB. Free memory was 117.8MB in the beginning and 87.0MB in the end (delta: 30.8MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-03-17 13:45:10,633 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 201.3MB. Free memory is still 118.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 481.14ms. Allocated memory is still 167.8MB. Free memory was 117.8MB in the beginning and 87.0MB in the end (delta: 30.8MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2239]: 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_JEN_test9-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 961225f1af8bda006e5a86aed07a62a3e426daf2d218eb9a2332372592a548eb --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 13:45:12,255 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 13:45:12,327 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-03-17 13:45:12,333 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 13:45:12,333 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 13:45:12,381 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 13:45:12,382 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 13:45:12,382 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 13:45:12,382 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 13:45:12,382 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 13:45:12,382 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 13:45:12,382 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 13:45:12,383 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 13:45:12,383 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 13:45:12,383 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 13:45:12,383 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 13:45:12,383 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 13:45:12,383 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 13:45:12,383 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 13:45:12,383 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 13:45:12,383 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-17 13:45:12,383 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-17 13:45:12,383 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-17 13:45:12,383 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 13:45:12,383 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-17 13:45:12,383 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-17 13:45:12,383 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-17 13:45:12,383 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 13:45:12,383 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 13:45:12,383 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 13:45:12,384 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 13:45:12,384 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 13:45:12,384 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 13:45:12,384 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 13:45:12,384 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 13:45:12,384 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 13:45:12,384 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 13:45:12,384 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 13:45:12,384 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-17 13:45:12,384 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-17 13:45:12,384 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 13:45:12,384 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 13:45:12,384 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 13:45:12,384 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 13:45:12,384 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 -> 961225f1af8bda006e5a86aed07a62a3e426daf2d218eb9a2332372592a548eb [2025-03-17 13:45:12,595 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 13:45:12,600 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 13:45:12,601 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 13:45:12,602 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 13:45:12,602 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 13:45:12,603 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i [2025-03-17 13:45:13,797 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c9959a9d/d416007d6a4044a3950ebbfbffef6005/FLAGf0f435bfb [2025-03-17 13:45:14,092 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 13:45:14,094 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i [2025-03-17 13:45:14,117 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c9959a9d/d416007d6a4044a3950ebbfbffef6005/FLAGf0f435bfb [2025-03-17 13:45:14,131 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c9959a9d/d416007d6a4044a3950ebbfbffef6005 [2025-03-17 13:45:14,133 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 13:45:14,134 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 13:45:14,135 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 13:45:14,135 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 13:45:14,138 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 13:45:14,139 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 01:45:14" (1/1) ... [2025-03-17 13:45:14,141 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@750d5dbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:45:14, skipping insertion in model container [2025-03-17 13:45:14,141 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 01:45:14" (1/1) ... [2025-03-17 13:45:14,196 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 13:45:14,584 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:45:14,607 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:45:14,610 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:45:14,614 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:45:14,620 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:45:14,643 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:45:14,643 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:45:14,645 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:45:14,645 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:45:14,646 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:45:14,647 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:45:14,648 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:45:14,648 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:45:14,649 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:45:14,652 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:45:14,655 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 13:45:14,671 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-03-17 13:45:14,693 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 13:45:14,767 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:45:14,776 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:45:14,777 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:45:14,779 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:45:14,783 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:45:14,794 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:45:14,794 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:45:14,796 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:45:14,796 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:45:14,796 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:45:14,797 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:45:14,798 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:45:14,798 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:45:14,798 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:45:14,800 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:45:14,801 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 13:45:14,804 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 13:45:14,879 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 13:45:14,908 INFO L204 MainTranslator]: Completed translation [2025-03-17 13:45:14,909 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:45:14 WrapperNode [2025-03-17 13:45:14,909 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 13:45:14,910 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 13:45:14,910 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 13:45:14,910 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 13:45:14,915 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:45:14" (1/1) ... [2025-03-17 13:45:14,945 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:45:14" (1/1) ... [2025-03-17 13:45:15,021 INFO L138 Inliner]: procedures = 180, calls = 775, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 3017 [2025-03-17 13:45:15,021 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 13:45:15,021 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 13:45:15,021 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 13:45:15,021 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 13:45:15,052 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:45:14" (1/1) ... [2025-03-17 13:45:15,052 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:45:14" (1/1) ... [2025-03-17 13:45:15,065 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:45:14" (1/1) ... [2025-03-17 13:45:15,124 INFO L175 MemorySlicer]: Split 256 memory accesses to 3 slices as follows [2, 34, 220]. 86 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 54 writes are split as follows [0, 4, 50]. [2025-03-17 13:45:15,124 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:45:14" (1/1) ... [2025-03-17 13:45:15,125 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:45:14" (1/1) ... [2025-03-17 13:45:15,173 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:45:14" (1/1) ... [2025-03-17 13:45:15,178 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:45:14" (1/1) ... [2025-03-17 13:45:15,185 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:45:14" (1/1) ... [2025-03-17 13:45:15,190 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:45:14" (1/1) ... [2025-03-17 13:45:15,203 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 13:45:15,205 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 13:45:15,205 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 13:45:15,205 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 13:45:15,207 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:45:14" (1/1) ... [2025-03-17 13:45:15,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 13:45:15,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:45:15,232 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) [2025-03-17 13:45:15,235 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 [2025-03-17 13:45:15,253 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2025-03-17 13:45:15,253 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2025-03-17 13:45:15,253 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2025-03-17 13:45:15,254 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2025-03-17 13:45:15,254 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2025-03-17 13:45:15,254 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-03-17 13:45:15,254 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-03-17 13:45:15,254 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2025-03-17 13:45:15,254 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-17 13:45:15,254 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-17 13:45:15,254 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-03-17 13:45:15,254 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-03-17 13:45:15,254 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2025-03-17 13:45:15,254 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-03-17 13:45:15,254 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-03-17 13:45:15,254 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2025-03-17 13:45:15,254 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-17 13:45:15,255 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 13:45:15,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-17 13:45:15,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-17 13:45:15,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-17 13:45:15,255 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-17 13:45:15,255 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-17 13:45:15,255 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-17 13:45:15,255 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-17 13:45:15,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-17 13:45:15,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-03-17 13:45:15,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-03-17 13:45:15,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2025-03-17 13:45:15,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-17 13:45:15,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-03-17 13:45:15,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2025-03-17 13:45:15,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 13:45:15,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 13:45:15,424 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 13:45:15,425 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 13:45:19,170 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2218: call ULTIMATE.dealloc(main_~#i~0#1.base, main_~#i~0#1.offset);havoc main_~#i~0#1.base, main_~#i~0#1.offset; [2025-03-17 13:45:19,380 INFO L? ?]: Removed 1595 outVars from TransFormulas that were not future-live. [2025-03-17 13:45:19,380 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 13:45:19,424 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 13:45:19,426 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 13:45:19,426 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 01:45:19 BoogieIcfgContainer [2025-03-17 13:45:19,426 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 13:45:19,429 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 13:45:19,430 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 13:45:19,433 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 13:45:19,433 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 01:45:14" (1/3) ... [2025-03-17 13:45:19,434 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f665dfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 01:45:19, skipping insertion in model container [2025-03-17 13:45:19,434 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:45:14" (2/3) ... [2025-03-17 13:45:19,434 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f665dfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 01:45:19, skipping insertion in model container [2025-03-17 13:45:19,434 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 01:45:19" (3/3) ... [2025-03-17 13:45:19,435 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test9-2.i [2025-03-17 13:45:19,444 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 13:45:19,446 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_JEN_test9-2.i that has 6 procedures, 2074 locations, 1 initial locations, 36 loop locations, and 529 error locations. [2025-03-17 13:45:19,498 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 13:45:19,505 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;@6fc949c4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 13:45:19,505 INFO L334 AbstractCegarLoop]: Starting to check reachability of 529 error locations. [2025-03-17 13:45:19,512 INFO L276 IsEmpty]: Start isEmpty. Operand has 2064 states, 1029 states have (on average 2.1146744412050533) internal successors, (2176), 2057 states have internal predecessors, (2176), 505 states have call successors, (505), 3 states have call predecessors, (505), 3 states have return successors, (505), 6 states have call predecessors, (505), 505 states have call successors, (505) [2025-03-17 13:45:19,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2025-03-17 13:45:19,515 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:45:19,516 INFO L218 NwaCegarLoop]: trace histogram [1, 1] [2025-03-17 13:45:19,516 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr526REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:45:19,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:45:19,519 INFO L85 PathProgramCache]: Analyzing trace with hash 134911, now seen corresponding path program 1 times [2025-03-17 13:45:19,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:45:19,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1891375526] [2025-03-17 13:45:19,528 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:45:19,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:45:19,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:45:19,532 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) [2025-03-17 13:45:19,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 13:45:19,639 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-17 13:45:19,648 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-17 13:45:19,648 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:45:19,648 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:45:19,650 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 13:45:19,654 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:45:19,675 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 [2025-03-17 13:45:19,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:45:19,692 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:45:19,693 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:45:19,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891375526] [2025-03-17 13:45:19,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1891375526] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:45:19,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:45:19,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-17 13:45:19,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846408335] [2025-03-17 13:45:19,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:45:19,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 13:45:19,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:45:19,716 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 13:45:19,716 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:45:19,722 INFO L87 Difference]: Start difference. First operand has 2064 states, 1029 states have (on average 2.1146744412050533) internal successors, (2176), 2057 states have internal predecessors, (2176), 505 states have call successors, (505), 3 states have call predecessors, (505), 3 states have return successors, (505), 6 states have call predecessors, (505), 505 states have call successors, (505) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:45:21,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:45:21,566 INFO L93 Difference]: Finished difference Result 2228 states and 3295 transitions. [2025-03-17 13:45:21,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 13:45:21,568 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 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 2 [2025-03-17 13:45:21,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:45:21,599 INFO L225 Difference]: With dead ends: 2228 [2025-03-17 13:45:21,600 INFO L226 Difference]: Without dead ends: 2226 [2025-03-17 13:45:21,602 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:45:21,605 INFO L435 NwaCegarLoop]: 2631 mSDtfsCounter, 1966 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 1139 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2469 SdHoareTripleChecker+Valid, 2785 SdHoareTripleChecker+Invalid, 1155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-03-17 13:45:21,607 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2469 Valid, 2785 Invalid, 1155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1139 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-03-17 13:45:21,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2226 states. [2025-03-17 13:45:21,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2226 to 2048. [2025-03-17 13:45:21,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2048 states, 1031 states have (on average 2.034917555771096) internal successors, (2098), 2041 states have internal predecessors, (2098), 505 states have call successors, (505), 3 states have call predecessors, (505), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2025-03-17 13:45:21,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2048 states to 2048 states and 3106 transitions. [2025-03-17 13:45:21,889 INFO L78 Accepts]: Start accepts. Automaton has 2048 states and 3106 transitions. Word has length 2 [2025-03-17 13:45:21,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:45:21,890 INFO L471 AbstractCegarLoop]: Abstraction has 2048 states and 3106 transitions. [2025-03-17 13:45:21,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:45:21,890 INFO L276 IsEmpty]: Start isEmpty. Operand 2048 states and 3106 transitions. [2025-03-17 13:45:21,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2025-03-17 13:45:21,890 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:45:21,890 INFO L218 NwaCegarLoop]: trace histogram [1, 1] [2025-03-17 13:45:21,896 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-17 13:45:22,093 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 [2025-03-17 13:45:22,093 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr527REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:45:22,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:45:22,094 INFO L85 PathProgramCache]: Analyzing trace with hash 134912, now seen corresponding path program 1 times [2025-03-17 13:45:22,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:45:22,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [487169025] [2025-03-17 13:45:22,094 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:45:22,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:45:22,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:45:22,096 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) [2025-03-17 13:45:22,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 13:45:22,171 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-17 13:45:22,174 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-17 13:45:22,174 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:45:22,174 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:45:22,175 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 13:45:22,177 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:45:22,185 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 [2025-03-17 13:45:22,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:45:22,191 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:45:22,192 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:45:22,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487169025] [2025-03-17 13:45:22,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487169025] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:45:22,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:45:22,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-17 13:45:22,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135707303] [2025-03-17 13:45:22,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:45:22,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 13:45:22,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:45:22,193 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 13:45:22,193 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:45:22,193 INFO L87 Difference]: Start difference. First operand 2048 states and 3106 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:45:24,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:45:24,469 INFO L93 Difference]: Finished difference Result 3460 states and 5551 transitions. [2025-03-17 13:45:24,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 13:45:24,470 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 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 2 [2025-03-17 13:45:24,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:45:24,486 INFO L225 Difference]: With dead ends: 3460 [2025-03-17 13:45:24,486 INFO L226 Difference]: Without dead ends: 3460 [2025-03-17 13:45:24,486 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:45:24,488 INFO L435 NwaCegarLoop]: 3005 mSDtfsCounter, 1444 mSDsluCounter, 2079 mSDsCounter, 0 mSdLazyCounter, 1208 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1944 SdHoareTripleChecker+Valid, 5084 SdHoareTripleChecker+Invalid, 1214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2025-03-17 13:45:24,488 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1944 Valid, 5084 Invalid, 1214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1208 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2025-03-17 13:45:24,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3460 states. [2025-03-17 13:45:24,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3460 to 3173. [2025-03-17 13:45:24,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3173 states, 1657 states have (on average 2.0102595051297527) internal successors, (3331), 3166 states have internal predecessors, (3331), 1005 states have call successors, (1005), 3 states have call predecessors, (1005), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2025-03-17 13:45:24,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3173 states to 3173 states and 5339 transitions. [2025-03-17 13:45:24,734 INFO L78 Accepts]: Start accepts. Automaton has 3173 states and 5339 transitions. Word has length 2 [2025-03-17 13:45:24,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:45:24,734 INFO L471 AbstractCegarLoop]: Abstraction has 3173 states and 5339 transitions. [2025-03-17 13:45:24,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:45:24,734 INFO L276 IsEmpty]: Start isEmpty. Operand 3173 states and 5339 transitions. [2025-03-17 13:45:24,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-03-17 13:45:24,734 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:45:24,734 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-17 13:45:24,741 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-17 13:45:24,939 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 [2025-03-17 13:45:24,939 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr523REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:45:24,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:45:24,940 INFO L85 PathProgramCache]: Analyzing trace with hash 166811739, now seen corresponding path program 1 times [2025-03-17 13:45:24,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:45:24,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1464071649] [2025-03-17 13:45:24,940 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:45:24,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:45:24,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:45:24,942 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) [2025-03-17 13:45:24,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-17 13:45:25,023 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 13:45:25,032 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 13:45:25,032 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:45:25,032 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:45:25,033 INFO L256 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-17 13:45:25,035 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:45:25,041 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 [2025-03-17 13:45:25,085 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2025-03-17 13:45:25,086 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2025-03-17 13:45:25,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:45:25,153 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:45:25,153 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:45:25,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464071649] [2025-03-17 13:45:25,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464071649] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:45:25,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:45:25,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 13:45:25,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936141750] [2025-03-17 13:45:25,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:45:25,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:45:25,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:45:25,154 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:45:25,154 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:45:25,154 INFO L87 Difference]: Start difference. First operand 3173 states and 5339 transitions. Second operand has 4 states, 3 states have (on average 2.0) 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) [2025-03-17 13:45:32,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:45:32,015 INFO L93 Difference]: Finished difference Result 5156 states and 8296 transitions. [2025-03-17 13:45:32,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 13:45:32,016 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) 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 [2025-03-17 13:45:32,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:45:32,037 INFO L225 Difference]: With dead ends: 5156 [2025-03-17 13:45:32,037 INFO L226 Difference]: Without dead ends: 5156 [2025-03-17 13:45:32,037 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 [2025-03-17 13:45:32,039 INFO L435 NwaCegarLoop]: 5020 mSDtfsCounter, 3181 mSDsluCounter, 3158 mSDsCounter, 0 mSdLazyCounter, 4559 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4181 SdHoareTripleChecker+Valid, 8178 SdHoareTripleChecker+Invalid, 4570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 4559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2025-03-17 13:45:32,039 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4181 Valid, 8178 Invalid, 4570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 4559 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2025-03-17 13:45:32,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5156 states. [2025-03-17 13:45:32,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5156 to 3319. [2025-03-17 13:45:32,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3319 states, 1803 states have (on average 2.004991680532446) internal successors, (3615), 3312 states have internal predecessors, (3615), 1005 states have call successors, (1005), 3 states have call predecessors, (1005), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2025-03-17 13:45:32,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3319 states to 3319 states and 5623 transitions. [2025-03-17 13:45:32,289 INFO L78 Accepts]: Start accepts. Automaton has 3319 states and 5623 transitions. Word has length 6 [2025-03-17 13:45:32,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:45:32,289 INFO L471 AbstractCegarLoop]: Abstraction has 3319 states and 5623 transitions. [2025-03-17 13:45:32,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) 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) [2025-03-17 13:45:32,290 INFO L276 IsEmpty]: Start isEmpty. Operand 3319 states and 5623 transitions. [2025-03-17 13:45:32,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-03-17 13:45:32,290 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:45:32,290 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:45:32,297 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-17 13:45:32,490 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 [2025-03-17 13:45:32,490 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr520REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:45:32,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:45:32,491 INFO L85 PathProgramCache]: Analyzing trace with hash 876200719, now seen corresponding path program 1 times [2025-03-17 13:45:32,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:45:32,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [621372027] [2025-03-17 13:45:32,491 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:45:32,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:45:32,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:45:32,493 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) [2025-03-17 13:45:32,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-17 13:45:32,576 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 13:45:32,589 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 13:45:32,589 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:45:32,589 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:45:32,590 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 13:45:32,591 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:45:32,598 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 [2025-03-17 13:45:32,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:45:32,608 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:45:32,608 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:45:32,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621372027] [2025-03-17 13:45:32,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621372027] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:45:32,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:45:32,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 13:45:32,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539021121] [2025-03-17 13:45:32,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:45:32,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 13:45:32,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:45:32,611 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 13:45:32,611 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:45:32,611 INFO L87 Difference]: Start difference. First operand 3319 states and 5623 transitions. Second operand has 3 states, 2 states have (on average 3.5) 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) [2025-03-17 13:45:34,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:45:34,061 INFO L93 Difference]: Finished difference Result 4486 states and 7801 transitions. [2025-03-17 13:45:34,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 13:45:34,061 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) 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 [2025-03-17 13:45:34,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:45:34,077 INFO L225 Difference]: With dead ends: 4486 [2025-03-17 13:45:34,077 INFO L226 Difference]: Without dead ends: 4486 [2025-03-17 13:45:34,077 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 [2025-03-17 13:45:34,078 INFO L435 NwaCegarLoop]: 4800 mSDtfsCounter, 1759 mSDsluCounter, 2256 mSDsCounter, 0 mSdLazyCounter, 1165 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2262 SdHoareTripleChecker+Valid, 7056 SdHoareTripleChecker+Invalid, 1215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-17 13:45:34,079 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2262 Valid, 7056 Invalid, 1215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1165 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-17 13:45:34,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4486 states. [2025-03-17 13:45:34,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4486 to 3272. [2025-03-17 13:45:34,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3272 states, 1803 states have (on average 1.9728230726566833) internal successors, (3557), 3265 states have internal predecessors, (3557), 1005 states have call successors, (1005), 3 states have call predecessors, (1005), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2025-03-17 13:45:34,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3272 states to 3272 states and 5565 transitions. [2025-03-17 13:45:34,339 INFO L78 Accepts]: Start accepts. Automaton has 3272 states and 5565 transitions. Word has length 7 [2025-03-17 13:45:34,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:45:34,339 INFO L471 AbstractCegarLoop]: Abstraction has 3272 states and 5565 transitions. [2025-03-17 13:45:34,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) 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) [2025-03-17 13:45:34,339 INFO L276 IsEmpty]: Start isEmpty. Operand 3272 states and 5565 transitions. [2025-03-17 13:45:34,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-03-17 13:45:34,339 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:45:34,339 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:45:34,361 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-17 13:45:34,544 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 [2025-03-17 13:45:34,544 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr521REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:45:34,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:45:34,545 INFO L85 PathProgramCache]: Analyzing trace with hash 876200720, now seen corresponding path program 1 times [2025-03-17 13:45:34,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:45:34,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1234331813] [2025-03-17 13:45:34,545 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:45:34,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:45:34,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:45:34,547 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) [2025-03-17 13:45:34,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-17 13:45:34,637 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 13:45:34,646 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 13:45:34,647 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:45:34,647 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:45:34,648 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 13:45:34,650 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:45:34,658 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 [2025-03-17 13:45:34,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:45:34,673 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:45:34,673 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:45:34,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234331813] [2025-03-17 13:45:34,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234331813] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:45:34,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:45:34,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 13:45:34,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941137478] [2025-03-17 13:45:34,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:45:34,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 13:45:34,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:45:34,674 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 13:45:34,674 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:45:34,674 INFO L87 Difference]: Start difference. First operand 3272 states and 5565 transitions. Second operand has 3 states, 2 states have (on average 3.5) 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) [2025-03-17 13:45:36,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:45:36,515 INFO L93 Difference]: Finished difference Result 5696 states and 10111 transitions. [2025-03-17 13:45:36,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 13:45:36,516 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) 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 [2025-03-17 13:45:36,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:45:36,540 INFO L225 Difference]: With dead ends: 5696 [2025-03-17 13:45:36,541 INFO L226 Difference]: Without dead ends: 5696 [2025-03-17 13:45:36,541 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 [2025-03-17 13:45:36,541 INFO L435 NwaCegarLoop]: 4952 mSDtfsCounter, 1511 mSDsluCounter, 2423 mSDsCounter, 0 mSdLazyCounter, 1162 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2011 SdHoareTripleChecker+Valid, 7375 SdHoareTripleChecker+Invalid, 1175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-03-17 13:45:36,541 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2011 Valid, 7375 Invalid, 1175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1162 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-03-17 13:45:36,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5696 states. [2025-03-17 13:45:36,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5696 to 3299. [2025-03-17 13:45:36,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3299 states, 1840 states have (on average 1.9619565217391304) internal successors, (3610), 3292 states have internal predecessors, (3610), 1005 states have call successors, (1005), 3 states have call predecessors, (1005), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2025-03-17 13:45:36,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3299 states to 3299 states and 5618 transitions. [2025-03-17 13:45:36,840 INFO L78 Accepts]: Start accepts. Automaton has 3299 states and 5618 transitions. Word has length 7 [2025-03-17 13:45:36,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:45:36,840 INFO L471 AbstractCegarLoop]: Abstraction has 3299 states and 5618 transitions. [2025-03-17 13:45:36,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) 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) [2025-03-17 13:45:36,841 INFO L276 IsEmpty]: Start isEmpty. Operand 3299 states and 5618 transitions. [2025-03-17 13:45:36,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-03-17 13:45:36,841 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:45:36,841 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:45:36,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-17 13:45:37,042 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 [2025-03-17 13:45:37,042 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr104REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:45:37,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:45:37,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1207417634, now seen corresponding path program 1 times [2025-03-17 13:45:37,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:45:37,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1104715827] [2025-03-17 13:45:37,043 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:45:37,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:45:37,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:45:37,044 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) [2025-03-17 13:45:37,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-17 13:45:37,127 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-17 13:45:37,137 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-17 13:45:37,137 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:45:37,137 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:45:37,138 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 13:45:37,139 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:45:37,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:45:37,185 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:45:37,185 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:45:37,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104715827] [2025-03-17 13:45:37,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104715827] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:45:37,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:45:37,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 13:45:37,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739720296] [2025-03-17 13:45:37,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:45:37,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 13:45:37,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:45:37,186 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 13:45:37,186 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:45:37,186 INFO L87 Difference]: Start difference. First operand 3299 states and 5618 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 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) [2025-03-17 13:45:37,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:45:37,354 INFO L93 Difference]: Finished difference Result 4553 states and 7768 transitions. [2025-03-17 13:45:37,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 13:45:37,355 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 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 [2025-03-17 13:45:37,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:45:37,367 INFO L225 Difference]: With dead ends: 4553 [2025-03-17 13:45:37,367 INFO L226 Difference]: Without dead ends: 4553 [2025-03-17 13:45:37,367 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:45:37,367 INFO L435 NwaCegarLoop]: 3108 mSDtfsCounter, 1467 mSDsluCounter, 2955 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1967 SdHoareTripleChecker+Valid, 6063 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 13:45:37,368 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1967 Valid, 6063 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 13:45:37,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4553 states. [2025-03-17 13:45:37,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4553 to 4284. [2025-03-17 13:45:37,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4284 states, 2325 states have (on average 1.9617204301075268) internal successors, (4561), 4277 states have internal predecessors, (4561), 1505 states have call successors, (1505), 3 states have call predecessors, (1505), 2 states have return successors, (1503), 6 states have call predecessors, (1503), 1503 states have call successors, (1503) [2025-03-17 13:45:37,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4284 states to 4284 states and 7569 transitions. [2025-03-17 13:45:37,598 INFO L78 Accepts]: Start accepts. Automaton has 4284 states and 7569 transitions. Word has length 10 [2025-03-17 13:45:37,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:45:37,598 INFO L471 AbstractCegarLoop]: Abstraction has 4284 states and 7569 transitions. [2025-03-17 13:45:37,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 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) [2025-03-17 13:45:37,598 INFO L276 IsEmpty]: Start isEmpty. Operand 4284 states and 7569 transitions. [2025-03-17 13:45:37,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-03-17 13:45:37,599 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:45:37,599 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:45:37,605 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-17 13:45:37,799 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 [2025-03-17 13:45:37,799 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr196REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:45:37,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:45:37,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1323943371, now seen corresponding path program 1 times [2025-03-17 13:45:37,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:45:37,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [338680591] [2025-03-17 13:45:37,800 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:45:37,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:45:37,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:45:37,802 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) [2025-03-17 13:45:37,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-17 13:45:37,883 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-17 13:45:37,893 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-17 13:45:37,893 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:45:37,893 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:45:37,895 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 13:45:37,896 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:45:37,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:45:37,919 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:45:37,919 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:45:37,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338680591] [2025-03-17 13:45:37,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338680591] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:45:37,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:45:37,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 13:45:37,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20012857] [2025-03-17 13:45:37,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:45:37,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:45:37,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:45:37,920 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:45:37,920 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:45:37,920 INFO L87 Difference]: Start difference. First operand 4284 states and 7569 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) [2025-03-17 13:45:40,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:45:40,612 INFO L93 Difference]: Finished difference Result 4451 states and 7699 transitions. [2025-03-17 13:45:40,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 13:45:40,613 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 [2025-03-17 13:45:40,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:45:40,622 INFO L225 Difference]: With dead ends: 4451 [2025-03-17 13:45:40,622 INFO L226 Difference]: Without dead ends: 4451 [2025-03-17 13:45:40,622 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 [2025-03-17 13:45:40,622 INFO L435 NwaCegarLoop]: 2587 mSDtfsCounter, 1964 mSDsluCounter, 1639 mSDsCounter, 0 mSdLazyCounter, 2555 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2467 SdHoareTripleChecker+Valid, 4226 SdHoareTripleChecker+Invalid, 2584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 2555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2025-03-17 13:45:40,622 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2467 Valid, 4226 Invalid, 2584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 2555 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2025-03-17 13:45:40,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4451 states. [2025-03-17 13:45:40,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4451 to 4261. [2025-03-17 13:45:40,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4261 states, 2325 states have (on average 1.9320430107526883) internal successors, (4492), 4254 states have internal predecessors, (4492), 1505 states have call successors, (1505), 3 states have call predecessors, (1505), 2 states have return successors, (1503), 6 states have call predecessors, (1503), 1503 states have call successors, (1503) [2025-03-17 13:45:40,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4261 states to 4261 states and 7500 transitions. [2025-03-17 13:45:40,837 INFO L78 Accepts]: Start accepts. Automaton has 4261 states and 7500 transitions. Word has length 11 [2025-03-17 13:45:40,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:45:40,837 INFO L471 AbstractCegarLoop]: Abstraction has 4261 states and 7500 transitions. [2025-03-17 13:45:40,837 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) [2025-03-17 13:45:40,837 INFO L276 IsEmpty]: Start isEmpty. Operand 4261 states and 7500 transitions. [2025-03-17 13:45:40,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-03-17 13:45:40,838 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:45:40,838 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:45:40,844 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-17 13:45:41,042 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 [2025-03-17 13:45:41,042 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr197REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:45:41,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:45:41,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1323943372, now seen corresponding path program 1 times [2025-03-17 13:45:41,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:45:41,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1875387229] [2025-03-17 13:45:41,044 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:45:41,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:45:41,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:45:41,046 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) [2025-03-17 13:45:41,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-17 13:45:41,130 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-17 13:45:41,142 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-17 13:45:41,142 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:45:41,142 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:45:41,144 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 13:45:41,145 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:45:41,154 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 [2025-03-17 13:45:41,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:45:41,213 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:45:41,213 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:45:41,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875387229] [2025-03-17 13:45:41,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875387229] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:45:41,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:45:41,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 13:45:41,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374109021] [2025-03-17 13:45:41,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:45:41,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:45:41,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:45:41,214 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:45:41,214 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:45:41,214 INFO L87 Difference]: Start difference. First operand 4261 states and 7500 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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) [2025-03-17 13:45:44,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:45:44,360 INFO L93 Difference]: Finished difference Result 4455 states and 7669 transitions. [2025-03-17 13:45:44,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 13:45:44,361 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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 [2025-03-17 13:45:44,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:45:44,370 INFO L225 Difference]: With dead ends: 4455 [2025-03-17 13:45:44,370 INFO L226 Difference]: Without dead ends: 4455 [2025-03-17 13:45:44,370 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 [2025-03-17 13:45:44,371 INFO L435 NwaCegarLoop]: 2893 mSDtfsCounter, 1337 mSDsluCounter, 3518 mSDsCounter, 0 mSdLazyCounter, 2635 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1837 SdHoareTripleChecker+Valid, 6411 SdHoareTripleChecker+Invalid, 2650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2025-03-17 13:45:44,371 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1837 Valid, 6411 Invalid, 2650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 2635 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2025-03-17 13:45:44,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4455 states. [2025-03-17 13:45:44,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4455 to 4242. [2025-03-17 13:45:44,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4242 states, 2306 states have (on average 1.9297484822202948) internal successors, (4450), 4235 states have internal predecessors, (4450), 1505 states have call successors, (1505), 3 states have call predecessors, (1505), 2 states have return successors, (1503), 6 states have call predecessors, (1503), 1503 states have call successors, (1503) [2025-03-17 13:45:44,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4242 states to 4242 states and 7458 transitions. [2025-03-17 13:45:44,615 INFO L78 Accepts]: Start accepts. Automaton has 4242 states and 7458 transitions. Word has length 11 [2025-03-17 13:45:44,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:45:44,615 INFO L471 AbstractCegarLoop]: Abstraction has 4242 states and 7458 transitions. [2025-03-17 13:45:44,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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) [2025-03-17 13:45:44,615 INFO L276 IsEmpty]: Start isEmpty. Operand 4242 states and 7458 transitions. [2025-03-17 13:45:44,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-03-17 13:45:44,616 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:45:44,616 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:45:44,623 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-17 13:45:44,816 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 [2025-03-17 13:45:44,817 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr173REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:45:44,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:45:44,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1907469657, now seen corresponding path program 1 times [2025-03-17 13:45:44,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:45:44,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1526485183] [2025-03-17 13:45:44,818 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:45:44,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:45:44,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:45:44,820 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) [2025-03-17 13:45:44,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-17 13:45:44,903 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-17 13:45:44,913 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-17 13:45:44,913 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:45:44,913 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:45:44,914 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 13:45:44,915 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:45:44,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:45:44,930 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:45:44,930 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:45:44,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526485183] [2025-03-17 13:45:44,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526485183] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:45:44,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:45:44,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 13:45:44,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784483825] [2025-03-17 13:45:44,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:45:44,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:45:44,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:45:44,931 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:45:44,931 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:45:44,931 INFO L87 Difference]: Start difference. First operand 4242 states and 7458 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:45:44,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:45:44,990 INFO L93 Difference]: Finished difference Result 4164 states and 7337 transitions. [2025-03-17 13:45:44,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 13:45:44,991 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2025-03-17 13:45:44,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:45:44,998 INFO L225 Difference]: With dead ends: 4164 [2025-03-17 13:45:44,999 INFO L226 Difference]: Without dead ends: 4164 [2025-03-17 13:45:44,999 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:45:44,999 INFO L435 NwaCegarLoop]: 2936 mSDtfsCounter, 45 mSDsluCounter, 5849 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 8785 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 13:45:44,999 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 8785 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 13:45:45,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4164 states. [2025-03-17 13:45:45,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4164 to 4164. [2025-03-17 13:45:45,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4164 states, 2247 states have (on average 1.9265687583444593) internal successors, (4329), 4157 states have internal predecessors, (4329), 1505 states have call successors, (1505), 3 states have call predecessors, (1505), 2 states have return successors, (1503), 6 states have call predecessors, (1503), 1503 states have call successors, (1503) [2025-03-17 13:45:45,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4164 states to 4164 states and 7337 transitions. [2025-03-17 13:45:45,243 INFO L78 Accepts]: Start accepts. Automaton has 4164 states and 7337 transitions. Word has length 12 [2025-03-17 13:45:45,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:45:45,244 INFO L471 AbstractCegarLoop]: Abstraction has 4164 states and 7337 transitions. [2025-03-17 13:45:45,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:45:45,244 INFO L276 IsEmpty]: Start isEmpty. Operand 4164 states and 7337 transitions. [2025-03-17 13:45:45,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-03-17 13:45:45,244 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:45:45,244 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:45:45,251 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-03-17 13:45:45,444 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 [2025-03-17 13:45:45,445 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:45:45,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:45:45,445 INFO L85 PathProgramCache]: Analyzing trace with hash -687208263, now seen corresponding path program 1 times [2025-03-17 13:45:45,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:45:45,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1241946592] [2025-03-17 13:45:45,445 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:45:45,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:45:45,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:45:45,448 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) [2025-03-17 13:45:45,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-17 13:45:45,527 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-17 13:45:45,538 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-17 13:45:45,538 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:45:45,538 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:45:45,540 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 13:45:45,542 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:45:45,549 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 13:45:45,549 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 13:45:45,551 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 31 [2025-03-17 13:45:45,576 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 13:45:45,576 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 22 [2025-03-17 13:45:45,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:45:45,588 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:45:45,588 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:45:45,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241946592] [2025-03-17 13:45:45,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241946592] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:45:45,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:45:45,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 13:45:45,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991613053] [2025-03-17 13:45:45,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:45:45,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:45:45,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:45:45,588 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:45:45,590 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:45:45,590 INFO L87 Difference]: Start difference. First operand 4164 states and 7337 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:45:46,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:45:46,637 INFO L93 Difference]: Finished difference Result 5882 states and 10050 transitions. [2025-03-17 13:45:46,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 13:45:46,638 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2025-03-17 13:45:46,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:45:46,649 INFO L225 Difference]: With dead ends: 5882 [2025-03-17 13:45:46,650 INFO L226 Difference]: Without dead ends: 5882 [2025-03-17 13:45:46,650 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:45:46,650 INFO L435 NwaCegarLoop]: 3428 mSDtfsCounter, 1877 mSDsluCounter, 5847 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2380 SdHoareTripleChecker+Valid, 9275 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-17 13:45:46,651 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2380 Valid, 9275 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-17 13:45:46,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5882 states. [2025-03-17 13:45:46,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5882 to 3104. [2025-03-17 13:45:46,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3104 states, 1687 states have (on average 1.931238885595732) internal successors, (3258), 3097 states have internal predecessors, (3258), 1005 states have call successors, (1005), 3 states have call predecessors, (1005), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2025-03-17 13:45:46,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3104 states to 3104 states and 5266 transitions. [2025-03-17 13:45:46,943 INFO L78 Accepts]: Start accepts. Automaton has 3104 states and 5266 transitions. Word has length 12 [2025-03-17 13:45:46,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:45:46,943 INFO L471 AbstractCegarLoop]: Abstraction has 3104 states and 5266 transitions. [2025-03-17 13:45:46,943 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:45:46,943 INFO L276 IsEmpty]: Start isEmpty. Operand 3104 states and 5266 transitions. [2025-03-17 13:45:46,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-03-17 13:45:46,944 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:45:46,944 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:45:46,950 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-03-17 13:45:47,148 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 [2025-03-17 13:45:47,149 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr512REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:45:47,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:45:47,150 INFO L85 PathProgramCache]: Analyzing trace with hash 482482287, now seen corresponding path program 1 times [2025-03-17 13:45:47,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:45:47,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [811857432] [2025-03-17 13:45:47,150 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:45:47,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:45:47,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:45:47,153 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) [2025-03-17 13:45:47,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-17 13:45:47,250 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-17 13:45:47,271 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-17 13:45:47,271 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:45:47,271 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:45:47,274 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 13:45:47,276 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:45:47,282 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 [2025-03-17 13:45:47,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:45:47,317 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:45:47,317 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:45:47,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811857432] [2025-03-17 13:45:47,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811857432] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:45:47,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:45:47,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 13:45:47,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328288314] [2025-03-17 13:45:47,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:45:47,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:45:47,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:45:47,318 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:45:47,318 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:45:47,318 INFO L87 Difference]: Start difference. First operand 3104 states and 5266 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:45:49,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:45:49,719 INFO L93 Difference]: Finished difference Result 3089 states and 5228 transitions. [2025-03-17 13:45:49,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 13:45:49,719 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2025-03-17 13:45:49,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:45:49,723 INFO L225 Difference]: With dead ends: 3089 [2025-03-17 13:45:49,723 INFO L226 Difference]: Without dead ends: 3089 [2025-03-17 13:45:49,723 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:45:49,724 INFO L435 NwaCegarLoop]: 2581 mSDtfsCounter, 1724 mSDsluCounter, 1527 mSDsCounter, 0 mSdLazyCounter, 2462 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2227 SdHoareTripleChecker+Valid, 4108 SdHoareTripleChecker+Invalid, 2489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 2462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2025-03-17 13:45:49,724 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2227 Valid, 4108 Invalid, 2489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 2462 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2025-03-17 13:45:49,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3089 states. [2025-03-17 13:45:49,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3089 to 3081. [2025-03-17 13:45:49,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3081 states, 1687 states have (on average 1.903971547125074) internal successors, (3212), 3074 states have internal predecessors, (3212), 1005 states have call successors, (1005), 3 states have call predecessors, (1005), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2025-03-17 13:45:49,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3081 states to 3081 states and 5220 transitions. [2025-03-17 13:45:49,873 INFO L78 Accepts]: Start accepts. Automaton has 3081 states and 5220 transitions. Word has length 16 [2025-03-17 13:45:49,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:45:49,874 INFO L471 AbstractCegarLoop]: Abstraction has 3081 states and 5220 transitions. [2025-03-17 13:45:49,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:45:49,874 INFO L276 IsEmpty]: Start isEmpty. Operand 3081 states and 5220 transitions. [2025-03-17 13:45:49,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-03-17 13:45:49,874 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:45:49,874 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:45:49,882 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-03-17 13:45:50,074 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 [2025-03-17 13:45:50,075 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr513REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:45:50,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:45:50,076 INFO L85 PathProgramCache]: Analyzing trace with hash 482482288, now seen corresponding path program 1 times [2025-03-17 13:45:50,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:45:50,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1143732316] [2025-03-17 13:45:50,077 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:45:50,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:45:50,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:45:50,079 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) [2025-03-17 13:45:50,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-17 13:45:50,169 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-17 13:45:50,190 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-17 13:45:50,190 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:45:50,190 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:45:50,194 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 13:45:50,196 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:45:50,206 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-17 13:45:50,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:45:50,269 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:45:50,269 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:45:50,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143732316] [2025-03-17 13:45:50,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143732316] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:45:50,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:45:50,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 13:45:50,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184587748] [2025-03-17 13:45:50,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:45:50,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:45:50,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:45:50,270 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:45:50,270 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:45:50,271 INFO L87 Difference]: Start difference. First operand 3081 states and 5220 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:45:53,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:45:53,409 INFO L93 Difference]: Finished difference Result 5474 states and 9634 transitions. [2025-03-17 13:45:53,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 13:45:53,409 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2025-03-17 13:45:53,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:45:53,417 INFO L225 Difference]: With dead ends: 5474 [2025-03-17 13:45:53,417 INFO L226 Difference]: Without dead ends: 5474 [2025-03-17 13:45:53,417 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:45:53,417 INFO L435 NwaCegarLoop]: 4891 mSDtfsCounter, 1549 mSDsluCounter, 5887 mSDsCounter, 0 mSdLazyCounter, 2662 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2049 SdHoareTripleChecker+Valid, 10778 SdHoareTripleChecker+Invalid, 2684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 2662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2025-03-17 13:45:53,417 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2049 Valid, 10778 Invalid, 2684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 2662 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2025-03-17 13:45:53,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5474 states. [2025-03-17 13:45:53,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5474 to 3195. [2025-03-17 13:45:53,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3195 states, 1801 states have (on average 1.8600777345918933) internal successors, (3350), 3188 states have internal predecessors, (3350), 1005 states have call successors, (1005), 3 states have call predecessors, (1005), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2025-03-17 13:45:53,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3195 states to 3195 states and 5358 transitions. [2025-03-17 13:45:53,677 INFO L78 Accepts]: Start accepts. Automaton has 3195 states and 5358 transitions. Word has length 16 [2025-03-17 13:45:53,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:45:53,678 INFO L471 AbstractCegarLoop]: Abstraction has 3195 states and 5358 transitions. [2025-03-17 13:45:53,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:45:53,678 INFO L276 IsEmpty]: Start isEmpty. Operand 3195 states and 5358 transitions. [2025-03-17 13:45:53,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2025-03-17 13:45:53,678 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:45:53,679 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:45:53,687 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-03-17 13:45:53,879 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 [2025-03-17 13:45:53,879 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr513REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:45:53,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:45:53,880 INFO L85 PathProgramCache]: Analyzing trace with hash 562474765, now seen corresponding path program 1 times [2025-03-17 13:45:53,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:45:53,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1883753130] [2025-03-17 13:45:53,881 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:45:53,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:45:53,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:45:53,884 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) [2025-03-17 13:45:53,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-17 13:45:53,992 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-03-17 13:45:54,042 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-03-17 13:45:54,042 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:45:54,042 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:45:54,050 INFO L256 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-17 13:45:54,052 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:45:54,057 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 [2025-03-17 13:45:54,218 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:45:54,218 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 13:45:54,551 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:45:54,552 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:45:54,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883753130] [2025-03-17 13:45:54,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883753130] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 13:45:54,552 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-17 13:45:54,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2025-03-17 13:45:54,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198220048] [2025-03-17 13:45:54,553 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-17 13:45:54,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 13:45:54,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:45:54,553 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 13:45:54,554 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-17 13:45:54,554 INFO L87 Difference]: Start difference. First operand 3195 states and 5358 transitions. Second operand has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:46:07,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:46:07,429 INFO L93 Difference]: Finished difference Result 5830 states and 10124 transitions. [2025-03-17 13:46:07,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 13:46:07,430 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 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 35 [2025-03-17 13:46:07,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:46:07,437 INFO L225 Difference]: With dead ends: 5830 [2025-03-17 13:46:07,437 INFO L226 Difference]: Without dead ends: 5830 [2025-03-17 13:46:07,437 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2025-03-17 13:46:07,437 INFO L435 NwaCegarLoop]: 4930 mSDtfsCounter, 2069 mSDsluCounter, 18815 mSDsCounter, 0 mSdLazyCounter, 8321 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2570 SdHoareTripleChecker+Valid, 23745 SdHoareTripleChecker+Invalid, 8348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 8321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.6s IncrementalHoareTripleChecker+Time [2025-03-17 13:46:07,437 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2570 Valid, 23745 Invalid, 8348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 8321 Invalid, 0 Unknown, 0 Unchecked, 12.6s Time] [2025-03-17 13:46:07,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5830 states. [2025-03-17 13:46:07,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5830 to 3359. [2025-03-17 13:46:07,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3359 states, 1965 states have (on average 1.8229007633587786) internal successors, (3582), 3352 states have internal predecessors, (3582), 1005 states have call successors, (1005), 3 states have call predecessors, (1005), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2025-03-17 13:46:07,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3359 states to 3359 states and 5590 transitions. [2025-03-17 13:46:07,701 INFO L78 Accepts]: Start accepts. Automaton has 3359 states and 5590 transitions. Word has length 35 [2025-03-17 13:46:07,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:46:07,701 INFO L471 AbstractCegarLoop]: Abstraction has 3359 states and 5590 transitions. [2025-03-17 13:46:07,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:46:07,701 INFO L276 IsEmpty]: Start isEmpty. Operand 3359 states and 5590 transitions. [2025-03-17 13:46:07,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2025-03-17 13:46:07,702 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:46:07,702 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:46:07,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-03-17 13:46:07,903 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 [2025-03-17 13:46:07,903 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr431REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:46:07,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:46:07,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1666552663, now seen corresponding path program 1 times [2025-03-17 13:46:07,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:46:07,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [738065231] [2025-03-17 13:46:07,906 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:46:07,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:46:07,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:46:07,907 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) [2025-03-17 13:46:07,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-17 13:46:08,018 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 50 statements into 1 equivalence classes. [2025-03-17 13:46:08,069 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 50 of 50 statements. [2025-03-17 13:46:08,069 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:46:08,069 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:46:08,076 INFO L256 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 13:46:08,078 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:46:08,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:46:08,106 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:46:08,107 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:46:08,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738065231] [2025-03-17 13:46:08,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738065231] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:46:08,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:46:08,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 13:46:08,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3397056] [2025-03-17 13:46:08,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:46:08,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:46:08,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:46:08,108 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:46:08,108 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:46:08,108 INFO L87 Difference]: Start difference. First operand 3359 states and 5590 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:46:08,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:46:08,180 INFO L93 Difference]: Finished difference Result 3048 states and 5154 transitions. [2025-03-17 13:46:08,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 13:46:08,181 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2025-03-17 13:46:08,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:46:08,185 INFO L225 Difference]: With dead ends: 3048 [2025-03-17 13:46:08,185 INFO L226 Difference]: Without dead ends: 3048 [2025-03-17 13:46:08,185 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:46:08,186 INFO L435 NwaCegarLoop]: 2873 mSDtfsCounter, 56 mSDsluCounter, 5673 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 8546 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 [2025-03-17 13:46:08,186 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 8546 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 13:46:08,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3048 states. [2025-03-17 13:46:08,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3048 to 3046. [2025-03-17 13:46:08,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3046 states, 1675 states have (on average 1.8770149253731343) internal successors, (3144), 3039 states have internal predecessors, (3144), 1005 states have call successors, (1005), 3 states have call predecessors, (1005), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2025-03-17 13:46:08,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3046 states to 3046 states and 5152 transitions. [2025-03-17 13:46:08,340 INFO L78 Accepts]: Start accepts. Automaton has 3046 states and 5152 transitions. Word has length 50 [2025-03-17 13:46:08,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:46:08,340 INFO L471 AbstractCegarLoop]: Abstraction has 3046 states and 5152 transitions. [2025-03-17 13:46:08,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:46:08,340 INFO L276 IsEmpty]: Start isEmpty. Operand 3046 states and 5152 transitions. [2025-03-17 13:46:08,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2025-03-17 13:46:08,342 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:46:08,343 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] [2025-03-17 13:46:08,352 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-03-17 13:46:08,543 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 [2025-03-17 13:46:08,543 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr431REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:46:08,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:46:08,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1832938767, now seen corresponding path program 1 times [2025-03-17 13:46:08,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:46:08,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2070708506] [2025-03-17 13:46:08,545 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:46:08,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:46:08,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:46:08,546 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) [2025-03-17 13:46:08,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-03-17 13:46:08,657 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-03-17 13:46:08,731 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-03-17 13:46:08,731 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:46:08,731 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:46:08,740 INFO L256 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-17 13:46:08,742 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:46:08,748 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 [2025-03-17 13:46:09,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 13:46:09,066 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 [2025-03-17 13:46:09,080 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-17 13:46:09,080 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 [2025-03-17 13:46:09,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:46:09,086 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:46:09,087 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:46:09,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070708506] [2025-03-17 13:46:09,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2070708506] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:46:09,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:46:09,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 13:46:09,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387625624] [2025-03-17 13:46:09,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:46:09,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 13:46:09,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:46:09,088 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 13:46:09,088 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:46:09,089 INFO L87 Difference]: Start difference. First operand 3046 states and 5152 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) [2025-03-17 13:46:11,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:46:11,655 INFO L93 Difference]: Finished difference Result 3008 states and 5114 transitions. [2025-03-17 13:46:11,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 13:46:11,655 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 [2025-03-17 13:46:11,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:46:11,659 INFO L225 Difference]: With dead ends: 3008 [2025-03-17 13:46:11,659 INFO L226 Difference]: Without dead ends: 3008 [2025-03-17 13:46:11,659 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2025-03-17 13:46:11,659 INFO L435 NwaCegarLoop]: 2450 mSDtfsCounter, 3177 mSDsluCounter, 1292 mSDsCounter, 0 mSdLazyCounter, 1913 mSolverCounterSat, 547 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3680 SdHoareTripleChecker+Valid, 3742 SdHoareTripleChecker+Invalid, 2460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 547 IncrementalHoareTripleChecker+Valid, 1913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-03-17 13:46:11,659 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3680 Valid, 3742 Invalid, 2460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [547 Valid, 1913 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-03-17 13:46:11,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3008 states. [2025-03-17 13:46:11,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3008 to 2971. [2025-03-17 13:46:11,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2971 states, 1638 states have (on average 1.8510378510378511) internal successors, (3032), 2964 states have internal predecessors, (3032), 1005 states have call successors, (1005), 3 states have call predecessors, (1005), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2025-03-17 13:46:11,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2971 states to 2971 states and 5040 transitions. [2025-03-17 13:46:11,783 INFO L78 Accepts]: Start accepts. Automaton has 2971 states and 5040 transitions. Word has length 58 [2025-03-17 13:46:11,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:46:11,783 INFO L471 AbstractCegarLoop]: Abstraction has 2971 states and 5040 transitions. [2025-03-17 13:46:11,783 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) [2025-03-17 13:46:11,783 INFO L276 IsEmpty]: Start isEmpty. Operand 2971 states and 5040 transitions. [2025-03-17 13:46:11,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2025-03-17 13:46:11,784 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:46:11,784 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] [2025-03-17 13:46:11,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-03-17 13:46:11,988 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 [2025-03-17 13:46:11,988 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr424REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:46:11,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:46:11,989 INFO L85 PathProgramCache]: Analyzing trace with hash -775370179, now seen corresponding path program 1 times [2025-03-17 13:46:11,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:46:11,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1074629751] [2025-03-17 13:46:11,989 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:46:11,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:46:11,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:46:11,991 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) [2025-03-17 13:46:11,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-03-17 13:46:12,099 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 63 statements into 1 equivalence classes. [2025-03-17 13:46:12,155 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 63 of 63 statements. [2025-03-17 13:46:12,155 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:46:12,155 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:46:12,163 INFO L256 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-17 13:46:12,167 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:46:12,174 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-17 13:46:12,185 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 [2025-03-17 13:46:12,201 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 [2025-03-17 13:46:12,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:46:12,209 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:46:12,209 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:46:12,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074629751] [2025-03-17 13:46:12,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074629751] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:46:12,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:46:12,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 13:46:12,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918079289] [2025-03-17 13:46:12,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:46:12,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 13:46:12,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:46:12,210 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 13:46:12,210 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:46:12,210 INFO L87 Difference]: Start difference. First operand 2971 states and 5040 transitions. Second operand has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:46:13,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:46:13,448 INFO L93 Difference]: Finished difference Result 2970 states and 5039 transitions. [2025-03-17 13:46:13,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 13:46:13,449 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2025-03-17 13:46:13,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:46:13,452 INFO L225 Difference]: With dead ends: 2970 [2025-03-17 13:46:13,452 INFO L226 Difference]: Without dead ends: 2970 [2025-03-17 13:46:13,452 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-17 13:46:13,453 INFO L435 NwaCegarLoop]: 2845 mSDtfsCounter, 2 mSDsluCounter, 7362 mSDsCounter, 0 mSdLazyCounter, 1180 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 10207 SdHoareTripleChecker+Invalid, 1181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-17 13:46:13,453 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 10207 Invalid, 1181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1180 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-17 13:46:13,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2970 states. [2025-03-17 13:46:13,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2970 to 2970. [2025-03-17 13:46:13,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2970 states, 1638 states have (on average 1.8504273504273505) internal successors, (3031), 2963 states have internal predecessors, (3031), 1005 states have call successors, (1005), 3 states have call predecessors, (1005), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2025-03-17 13:46:13,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2970 states to 2970 states and 5039 transitions. [2025-03-17 13:46:13,605 INFO L78 Accepts]: Start accepts. Automaton has 2970 states and 5039 transitions. Word has length 63 [2025-03-17 13:46:13,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:46:13,606 INFO L471 AbstractCegarLoop]: Abstraction has 2970 states and 5039 transitions. [2025-03-17 13:46:13,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:46:13,606 INFO L276 IsEmpty]: Start isEmpty. Operand 2970 states and 5039 transitions. [2025-03-17 13:46:13,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2025-03-17 13:46:13,607 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:46:13,607 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] [2025-03-17 13:46:13,616 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-03-17 13:46:13,807 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 [2025-03-17 13:46:13,808 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr425REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:46:13,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:46:13,808 INFO L85 PathProgramCache]: Analyzing trace with hash -775370178, now seen corresponding path program 1 times [2025-03-17 13:46:13,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:46:13,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1781205061] [2025-03-17 13:46:13,808 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:46:13,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:46:13,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:46:13,810 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) [2025-03-17 13:46:13,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-03-17 13:46:13,917 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 63 statements into 1 equivalence classes. [2025-03-17 13:46:13,976 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 63 of 63 statements. [2025-03-17 13:46:13,976 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:46:13,976 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:46:13,984 INFO L256 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-17 13:46:13,985 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:46:13,994 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 [2025-03-17 13:46:14,007 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 [2025-03-17 13:46:14,016 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 [2025-03-17 13:46:14,043 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 [2025-03-17 13:46:14,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:46:14,055 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:46:14,055 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:46:14,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781205061] [2025-03-17 13:46:14,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781205061] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:46:14,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:46:14,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 13:46:14,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811941735] [2025-03-17 13:46:14,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:46:14,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 13:46:14,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:46:14,055 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 13:46:14,055 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:46:14,056 INFO L87 Difference]: Start difference. First operand 2970 states and 5039 transitions. Second operand has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:46:15,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:46:15,531 INFO L93 Difference]: Finished difference Result 2969 states and 5038 transitions. [2025-03-17 13:46:15,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 13:46:15,531 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2025-03-17 13:46:15,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:46:15,535 INFO L225 Difference]: With dead ends: 2969 [2025-03-17 13:46:15,535 INFO L226 Difference]: Without dead ends: 2969 [2025-03-17 13:46:15,536 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-17 13:46:15,536 INFO L435 NwaCegarLoop]: 2845 mSDtfsCounter, 1 mSDsluCounter, 7349 mSDsCounter, 0 mSdLazyCounter, 1190 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 10194 SdHoareTripleChecker+Invalid, 1191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-17 13:46:15,536 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 10194 Invalid, 1191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1190 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-17 13:46:15,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2969 states. [2025-03-17 13:46:15,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2969 to 2969. [2025-03-17 13:46:15,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2969 states, 1637 states have (on average 1.8509468540012217) internal successors, (3030), 2962 states have internal predecessors, (3030), 1005 states have call successors, (1005), 3 states have call predecessors, (1005), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2025-03-17 13:46:15,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2969 states to 2969 states and 5038 transitions. [2025-03-17 13:46:15,671 INFO L78 Accepts]: Start accepts. Automaton has 2969 states and 5038 transitions. Word has length 63 [2025-03-17 13:46:15,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:46:15,671 INFO L471 AbstractCegarLoop]: Abstraction has 2969 states and 5038 transitions. [2025-03-17 13:46:15,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:46:15,671 INFO L276 IsEmpty]: Start isEmpty. Operand 2969 states and 5038 transitions. [2025-03-17 13:46:15,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-03-17 13:46:15,672 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:46:15,672 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:46:15,682 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-03-17 13:46:15,872 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 [2025-03-17 13:46:15,872 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr420REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:46:15,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:46:15,873 INFO L85 PathProgramCache]: Analyzing trace with hash 19594010, now seen corresponding path program 1 times [2025-03-17 13:46:15,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:46:15,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [949312082] [2025-03-17 13:46:15,873 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:46:15,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:46:15,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:46:15,875 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) [2025-03-17 13:46:15,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-03-17 13:46:15,996 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 71 statements into 1 equivalence classes. [2025-03-17 13:46:16,054 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 71 of 71 statements. [2025-03-17 13:46:16,054 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:46:16,054 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:46:16,063 INFO L256 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-17 13:46:16,065 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:46:16,069 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 [2025-03-17 13:46:16,115 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 [2025-03-17 13:46:16,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:46:16,122 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:46:16,122 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:46:16,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949312082] [2025-03-17 13:46:16,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949312082] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:46:16,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:46:16,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 13:46:16,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013639206] [2025-03-17 13:46:16,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:46:16,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 13:46:16,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:46:16,123 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 13:46:16,123 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-17 13:46:16,123 INFO L87 Difference]: Start difference. First operand 2969 states and 5038 transitions. Second operand has 7 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 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) [2025-03-17 13:46:19,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:46:19,926 INFO L93 Difference]: Finished difference Result 2981 states and 5053 transitions. [2025-03-17 13:46:19,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 13:46:19,926 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 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 71 [2025-03-17 13:46:19,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:46:19,931 INFO L225 Difference]: With dead ends: 2981 [2025-03-17 13:46:19,931 INFO L226 Difference]: Without dead ends: 2981 [2025-03-17 13:46:19,931 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2025-03-17 13:46:19,932 INFO L435 NwaCegarLoop]: 2830 mSDtfsCounter, 13 mSDsluCounter, 7730 mSDsCounter, 0 mSdLazyCounter, 3677 mSolverCounterSat, 505 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 10560 SdHoareTripleChecker+Invalid, 4182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 505 IncrementalHoareTripleChecker+Valid, 3677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2025-03-17 13:46:19,932 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 10560 Invalid, 4182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [505 Valid, 3677 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2025-03-17 13:46:19,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2981 states. [2025-03-17 13:46:20,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2981 to 2975. [2025-03-17 13:46:20,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2975 states, 1642 states have (on average 1.8495736906211937) internal successors, (3037), 2967 states have internal predecessors, (3037), 1005 states have call successors, (1005), 3 states have call predecessors, (1005), 3 states have return successors, (1006), 6 states have call predecessors, (1006), 1003 states have call successors, (1006) [2025-03-17 13:46:20,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2975 states to 2975 states and 5048 transitions. [2025-03-17 13:46:20,057 INFO L78 Accepts]: Start accepts. Automaton has 2975 states and 5048 transitions. Word has length 71 [2025-03-17 13:46:20,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:46:20,057 INFO L471 AbstractCegarLoop]: Abstraction has 2975 states and 5048 transitions. [2025-03-17 13:46:20,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 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) [2025-03-17 13:46:20,057 INFO L276 IsEmpty]: Start isEmpty. Operand 2975 states and 5048 transitions. [2025-03-17 13:46:20,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-03-17 13:46:20,058 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:46:20,058 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:46:20,067 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-03-17 13:46:20,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:46:20,258 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr421REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:46:20,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:46:20,259 INFO L85 PathProgramCache]: Analyzing trace with hash 19594011, now seen corresponding path program 1 times [2025-03-17 13:46:20,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:46:20,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [584244262] [2025-03-17 13:46:20,259 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:46:20,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:46:20,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:46:20,261 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:46:20,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-03-17 13:46:20,378 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 71 statements into 1 equivalence classes. [2025-03-17 13:46:20,440 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 71 of 71 statements. [2025-03-17 13:46:20,440 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:46:20,440 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:46:20,450 INFO L256 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 13:46:20,452 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:46:20,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:46:20,468 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:46:20,468 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:46:20,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584244262] [2025-03-17 13:46:20,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584244262] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:46:20,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:46:20,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 13:46:20,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185406719] [2025-03-17 13:46:20,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:46:20,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:46:20,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:46:20,469 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:46:20,470 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:46:20,470 INFO L87 Difference]: Start difference. First operand 2975 states and 5048 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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) [2025-03-17 13:46:20,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:46:20,515 INFO L93 Difference]: Finished difference Result 2972 states and 5042 transitions. [2025-03-17 13:46:20,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 13:46:20,516 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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 71 [2025-03-17 13:46:20,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:46:20,525 INFO L225 Difference]: With dead ends: 2972 [2025-03-17 13:46:20,525 INFO L226 Difference]: Without dead ends: 2972 [2025-03-17 13:46:20,525 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:46:20,526 INFO L435 NwaCegarLoop]: 2845 mSDtfsCounter, 0 mSDsluCounter, 5685 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8530 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 13:46:20,526 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8530 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 13:46:20,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2972 states. [2025-03-17 13:46:20,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2972 to 2972. [2025-03-17 13:46:20,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2972 states, 1639 states have (on average 1.8505186089078707) internal successors, (3033), 2965 states have internal predecessors, (3033), 1005 states have call successors, (1005), 3 states have call predecessors, (1005), 3 states have return successors, (1004), 5 states have call predecessors, (1004), 1003 states have call successors, (1004) [2025-03-17 13:46:20,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2972 states to 2972 states and 5042 transitions. [2025-03-17 13:46:20,689 INFO L78 Accepts]: Start accepts. Automaton has 2972 states and 5042 transitions. Word has length 71 [2025-03-17 13:46:20,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:46:20,689 INFO L471 AbstractCegarLoop]: Abstraction has 2972 states and 5042 transitions. [2025-03-17 13:46:20,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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) [2025-03-17 13:46:20,690 INFO L276 IsEmpty]: Start isEmpty. Operand 2972 states and 5042 transitions. [2025-03-17 13:46:20,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2025-03-17 13:46:20,690 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:46:20,690 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:46:20,701 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-03-17 13:46:20,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:46:20,894 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr420REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:46:20,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:46:20,895 INFO L85 PathProgramCache]: Analyzing trace with hash -818168709, now seen corresponding path program 1 times [2025-03-17 13:46:20,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:46:20,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2027388232] [2025-03-17 13:46:20,896 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:46:20,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:46:20,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:46:20,899 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:46:20,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-03-17 13:46:21,015 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 72 statements into 1 equivalence classes. [2025-03-17 13:46:21,072 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 72 of 72 statements. [2025-03-17 13:46:21,072 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:46:21,072 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:46:21,080 INFO L256 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 13:46:21,082 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:46:21,103 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:46:21,103 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 13:46:21,151 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:46:21,152 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:46:21,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027388232] [2025-03-17 13:46:21,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2027388232] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 13:46:21,152 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-17 13:46:21,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2025-03-17 13:46:21,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38386889] [2025-03-17 13:46:21,152 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-17 13:46:21,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 13:46:21,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:46:21,152 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 13:46:21,153 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-03-17 13:46:21,153 INFO L87 Difference]: Start difference. First operand 2972 states and 5042 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 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) [2025-03-17 13:46:21,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:46:21,259 INFO L93 Difference]: Finished difference Result 2984 states and 5059 transitions. [2025-03-17 13:46:21,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 13:46:21,260 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 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 72 [2025-03-17 13:46:21,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:46:21,266 INFO L225 Difference]: With dead ends: 2984 [2025-03-17 13:46:21,266 INFO L226 Difference]: Without dead ends: 2984 [2025-03-17 13:46:21,266 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2025-03-17 13:46:21,268 INFO L435 NwaCegarLoop]: 2845 mSDtfsCounter, 8 mSDsluCounter, 11366 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 14211 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 13:46:21,269 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 14211 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 13:46:21,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2984 states. [2025-03-17 13:46:21,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2984 to 2982. [2025-03-17 13:46:21,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2982 states, 1648 states have (on average 1.8495145631067962) internal successors, (3048), 2974 states have internal predecessors, (3048), 1005 states have call successors, (1005), 4 states have call predecessors, (1005), 4 states have return successors, (1004), 5 states have call predecessors, (1004), 1003 states have call successors, (1004) [2025-03-17 13:46:21,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2982 states to 2982 states and 5057 transitions. [2025-03-17 13:46:21,573 INFO L78 Accepts]: Start accepts. Automaton has 2982 states and 5057 transitions. Word has length 72 [2025-03-17 13:46:21,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:46:21,574 INFO L471 AbstractCegarLoop]: Abstraction has 2982 states and 5057 transitions. [2025-03-17 13:46:21,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 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) [2025-03-17 13:46:21,574 INFO L276 IsEmpty]: Start isEmpty. Operand 2982 states and 5057 transitions. [2025-03-17 13:46:21,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2025-03-17 13:46:21,574 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:46:21,574 INFO L218 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:46:21,585 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-03-17 13:46:21,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:46:21,775 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr420REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:46:21,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:46:21,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1610664794, now seen corresponding path program 2 times [2025-03-17 13:46:21,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:46:21,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1520841368] [2025-03-17 13:46:21,776 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 13:46:21,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:46:21,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:46:21,778 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:46:21,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-03-17 13:46:21,908 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 75 statements into 2 equivalence classes.