./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-2.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 bd635b7902366e8a0b08b14a90a1f3949f04bf734a3e09a83f5077ced842f5da --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 09:31:59,015 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 09:31:59,089 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-04 09:31:59,094 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 09:31:59,094 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 09:31:59,119 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 09:31:59,120 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 09:31:59,120 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 09:31:59,120 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 09:31:59,121 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 09:31:59,121 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 09:31:59,121 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 09:31:59,122 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 09:31:59,122 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 09:31:59,122 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 09:31:59,123 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 09:31:59,123 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 09:31:59,123 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 09:31:59,123 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 09:31:59,123 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 09:31:59,123 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-04 09:31:59,124 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-04 09:31:59,124 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-04 09:31:59,124 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 09:31:59,124 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-04 09:31:59,124 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 09:31:59,124 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 09:31:59,124 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 09:31:59,124 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 09:31:59,124 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 09:31:59,125 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 09:31:59,125 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 09:31:59,125 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 09:31:59,125 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 09:31:59,126 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 09:31:59,126 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 09:31:59,126 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 09:31:59,126 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 09:31:59,126 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 09:31:59,126 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 09:31:59,126 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 09:31:59,126 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 09:31:59,126 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 -> bd635b7902366e8a0b08b14a90a1f3949f04bf734a3e09a83f5077ced842f5da [2025-03-04 09:31:59,396 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 09:31:59,405 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 09:31:59,406 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 09:31:59,407 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 09:31:59,407 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 09:31:59,408 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-2.i [2025-03-04 09:32:00,544 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7d29dff0/8c48322c50ce415c85a10ade4e6b47fd/FLAGcfcb8598b [2025-03-04 09:32:00,869 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 09:32:00,872 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-2.i [2025-03-04 09:32:00,891 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7d29dff0/8c48322c50ce415c85a10ade4e6b47fd/FLAGcfcb8598b [2025-03-04 09:32:01,110 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7d29dff0/8c48322c50ce415c85a10ade4e6b47fd [2025-03-04 09:32:01,113 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 09:32:01,114 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 09:32:01,115 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 09:32:01,115 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 09:32:01,119 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 09:32:01,119 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:32:01" (1/1) ... [2025-03-04 09:32:01,120 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28209cce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:32:01, skipping insertion in model container [2025-03-04 09:32:01,120 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:32:01" (1/1) ... [2025-03-04 09:32:01,148 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 09:32:01,494 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:32:01,522 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:32:01,524 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:32:01,529 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:32:01,535 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:32:01,564 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:32:01,565 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:32:01,566 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:32:01,566 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:32:01,569 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:32:01,570 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:32:01,571 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:32:01,571 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:32:01,574 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:32:01,579 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:32:01,581 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:32:01,581 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:32:01,581 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:32:01,582 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:32:01,584 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:32:01,588 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:32:01,606 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2025-03-04 09:32:01,607 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@605500ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:32:01, skipping insertion in model container [2025-03-04 09:32:01,607 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 09:32:01,607 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-03-04 09:32:01,609 INFO L158 Benchmark]: Toolchain (without parser) took 493.93ms. Allocated memory is still 142.6MB. Free memory was 110.4MB in the beginning and 88.1MB in the end (delta: 22.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-04 09:32:01,609 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 201.3MB. Free memory is still 123.7MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 09:32:01,609 INFO L158 Benchmark]: CACSL2BoogieTranslator took 492.10ms. Allocated memory is still 142.6MB. Free memory was 110.4MB in the beginning and 88.1MB in the end (delta: 22.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-04 09:32:01,610 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 201.3MB. Free memory is still 123.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 492.10ms. Allocated memory is still 142.6MB. Free memory was 110.4MB in the beginning and 88.1MB in the end (delta: 22.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1001]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-2.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 bd635b7902366e8a0b08b14a90a1f3949f04bf734a3e09a83f5077ced842f5da --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 09:32:03,180 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 09:32:03,255 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-03-04 09:32:03,260 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 09:32:03,263 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 09:32:03,284 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 09:32:03,285 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 09:32:03,285 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 09:32:03,285 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 09:32:03,286 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 09:32:03,286 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 09:32:03,286 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 09:32:03,287 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 09:32:03,287 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 09:32:03,287 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 09:32:03,287 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 09:32:03,287 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 09:32:03,287 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 09:32:03,287 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 09:32:03,287 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 09:32:03,287 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-04 09:32:03,288 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-04 09:32:03,288 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-04 09:32:03,288 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 09:32:03,288 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-04 09:32:03,288 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-04 09:32:03,288 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-04 09:32:03,288 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 09:32:03,288 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 09:32:03,289 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 09:32:03,289 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 09:32:03,289 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 09:32:03,289 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 09:32:03,289 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 09:32:03,289 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 09:32:03,290 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 09:32:03,290 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 09:32:03,290 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 09:32:03,290 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-04 09:32:03,290 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-04 09:32:03,290 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 09:32:03,290 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 09:32:03,290 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 09:32:03,290 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 09:32:03,290 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 -> bd635b7902366e8a0b08b14a90a1f3949f04bf734a3e09a83f5077ced842f5da [2025-03-04 09:32:03,522 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 09:32:03,530 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 09:32:03,532 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 09:32:03,533 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 09:32:03,534 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 09:32:03,535 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-2.i [2025-03-04 09:32:04,746 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cf4f2fee/7dfb7d7b687244c7ae9251635a2adb08/FLAG29df0d8a9 [2025-03-04 09:32:05,050 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 09:32:05,051 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-2.i [2025-03-04 09:32:05,062 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cf4f2fee/7dfb7d7b687244c7ae9251635a2adb08/FLAG29df0d8a9 [2025-03-04 09:32:05,072 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cf4f2fee/7dfb7d7b687244c7ae9251635a2adb08 [2025-03-04 09:32:05,074 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 09:32:05,075 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 09:32:05,076 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 09:32:05,076 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 09:32:05,079 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 09:32:05,079 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:32:05" (1/1) ... [2025-03-04 09:32:05,080 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@326a112d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:32:05, skipping insertion in model container [2025-03-04 09:32:05,080 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:32:05" (1/1) ... [2025-03-04 09:32:05,102 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 09:32:05,405 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:32:05,437 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:32:05,440 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:32:05,443 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:32:05,448 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:32:05,475 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:32:05,475 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:32:05,478 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:32:05,478 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:32:05,480 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:32:05,483 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:32:05,484 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:32:05,484 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:32:05,488 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:32:05,490 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:32:05,496 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:32:05,497 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:32:05,498 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:32:05,498 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:32:05,504 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:32:05,509 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:32:05,529 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-03-04 09:32:05,539 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 09:32:05,580 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:32:05,594 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:32:05,596 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:32:05,597 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:32:05,601 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:32:05,615 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:32:05,615 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:32:05,617 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:32:05,617 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:32:05,619 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:32:05,620 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:32:05,620 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:32:05,621 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:32:05,623 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:32:05,623 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:32:05,625 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:32:05,625 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:32:05,626 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:32:05,626 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:32:05,628 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:32:05,631 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:32:05,635 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 09:32:05,734 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:32:05,807 INFO L204 MainTranslator]: Completed translation [2025-03-04 09:32:05,808 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:32:05 WrapperNode [2025-03-04 09:32:05,809 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 09:32:05,809 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 09:32:05,810 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 09:32:05,810 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 09:32:05,815 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:32:05" (1/1) ... [2025-03-04 09:32:05,839 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:32:05" (1/1) ... [2025-03-04 09:32:05,886 INFO L138 Inliner]: procedures = 286, calls = 353, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1191 [2025-03-04 09:32:05,886 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 09:32:05,887 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 09:32:05,887 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 09:32:05,887 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 09:32:05,899 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:32:05" (1/1) ... [2025-03-04 09:32:05,899 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:32:05" (1/1) ... [2025-03-04 09:32:05,914 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:32:05" (1/1) ... [2025-03-04 09:32:06,009 INFO L175 MemorySlicer]: Split 318 memory accesses to 4 slices as follows [2, 12, 34, 270]. 85 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 10, 0, 0]. The 62 writes are split as follows [0, 1, 4, 57]. [2025-03-04 09:32:06,010 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:32:05" (1/1) ... [2025-03-04 09:32:06,010 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:32:05" (1/1) ... [2025-03-04 09:32:06,051 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:32:05" (1/1) ... [2025-03-04 09:32:06,054 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:32:05" (1/1) ... [2025-03-04 09:32:06,059 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:32:05" (1/1) ... [2025-03-04 09:32:06,064 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:32:05" (1/1) ... [2025-03-04 09:32:06,078 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 09:32:06,079 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 09:32:06,080 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 09:32:06,080 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 09:32:06,081 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:32:05" (1/1) ... [2025-03-04 09:32:06,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 09:32:06,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:32:06,114 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-04 09:32:06,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-04 09:32:06,142 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2025-03-04 09:32:06,143 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2025-03-04 09:32:06,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2025-03-04 09:32:06,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2025-03-04 09:32:06,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2025-03-04 09:32:06,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2025-03-04 09:32:06,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-03-04 09:32:06,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-03-04 09:32:06,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2025-03-04 09:32:06,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2025-03-04 09:32:06,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-04 09:32:06,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-04 09:32:06,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-04 09:32:06,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-04 09:32:06,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-03-04 09:32:06,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-04 09:32:06,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-03-04 09:32:06,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-03-04 09:32:06,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2025-03-04 09:32:06,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2025-03-04 09:32:06,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-04 09:32:06,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-03-04 09:32:06,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2025-03-04 09:32:06,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2025-03-04 09:32:06,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2025-03-04 09:32:06,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2025-03-04 09:32:06,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#2 [2025-03-04 09:32:06,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#3 [2025-03-04 09:32:06,147 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2025-03-04 09:32:06,147 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2025-03-04 09:32:06,147 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-04 09:32:06,147 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-04 09:32:06,147 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-04 09:32:06,147 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 09:32:06,147 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2025-03-04 09:32:06,147 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2025-03-04 09:32:06,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-04 09:32:06,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-04 09:32:06,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-04 09:32:06,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-03-04 09:32:06,147 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2025-03-04 09:32:06,148 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2025-03-04 09:32:06,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 09:32:06,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 09:32:06,383 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 09:32:06,385 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 09:32:06,493 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L955: havoc #t~malloc32.base, #t~malloc32.offset; [2025-03-04 09:32:09,249 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L969: havoc alt_memcmp_#t~nondet36#1; [2025-03-04 09:32:09,249 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L979: havoc real_malloc_#t~malloc39#1.base, real_malloc_#t~malloc39#1.offset; [2025-03-04 09:32:09,250 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L987: call ULTIMATE.dealloc(main_~#i~0#1.base, main_~#i~0#1.offset);havoc main_~#i~0#1.base, main_~#i~0#1.offset; [2025-03-04 09:32:09,354 INFO L? ?]: Removed 1306 outVars from TransFormulas that were not future-live. [2025-03-04 09:32:09,354 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 09:32:09,380 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 09:32:09,383 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 09:32:09,384 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 09:32:09 BoogieIcfgContainer [2025-03-04 09:32:09,385 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 09:32:09,386 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 09:32:09,387 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 09:32:09,390 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 09:32:09,390 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 09:32:05" (1/3) ... [2025-03-04 09:32:09,391 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70f657dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 09:32:09, skipping insertion in model container [2025-03-04 09:32:09,391 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:32:05" (2/3) ... [2025-03-04 09:32:09,392 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70f657dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 09:32:09, skipping insertion in model container [2025-03-04 09:32:09,392 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 09:32:09" (3/3) ... [2025-03-04 09:32:09,393 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test6-2.i [2025-03-04 09:32:09,402 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 09:32:09,403 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_OAT_test6-2.i that has 6 procedures, 1277 locations, 1 initial locations, 39 loop locations, and 625 error locations. [2025-03-04 09:32:09,445 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 09:32:09,455 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;@78e001b3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 09:32:09,456 INFO L334 AbstractCegarLoop]: Starting to check reachability of 625 error locations. [2025-03-04 09:32:09,460 INFO L276 IsEmpty]: Start isEmpty. Operand has 1277 states, 627 states have (on average 2.218500797448166) internal successors, (1391), 1255 states have internal predecessors, (1391), 20 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-04 09:32:09,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-03-04 09:32:09,464 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:32:09,464 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-03-04 09:32:09,465 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr613REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 622 more)] === [2025-03-04 09:32:09,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:32:09,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1432866, now seen corresponding path program 1 times [2025-03-04 09:32:09,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:32:09,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1465535359] [2025-03-04 09:32:09,481 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:32:09,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:32:09,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:32:09,483 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:32:09,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-04 09:32:09,618 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-04 09:32:09,632 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-04 09:32:09,633 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:32:09,633 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:32:09,636 INFO L256 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:32:09,639 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:32:09,671 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-04 09:32:09,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:32:09,690 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:32:09,691 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:32:09,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465535359] [2025-03-04 09:32:09,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465535359] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:32:09,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:32:09,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 09:32:09,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348060199] [2025-03-04 09:32:09,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:32:09,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:32:09,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:32:09,712 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:32:09,714 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:32:09,718 INFO L87 Difference]: Start difference. First operand has 1277 states, 627 states have (on average 2.218500797448166) internal successors, (1391), 1255 states have internal predecessors, (1391), 20 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:32:11,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:32:11,417 INFO L93 Difference]: Finished difference Result 1536 states and 1629 transitions. [2025-03-04 09:32:11,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:32:11,421 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2025-03-04 09:32:11,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:32:11,432 INFO L225 Difference]: With dead ends: 1536 [2025-03-04 09:32:11,432 INFO L226 Difference]: Without dead ends: 1534 [2025-03-04 09:32:11,433 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:32:11,434 INFO L435 NwaCegarLoop]: 904 mSDtfsCounter, 909 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 792 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 912 SdHoareTripleChecker+Valid, 1250 SdHoareTripleChecker+Invalid, 804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-03-04 09:32:11,435 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [912 Valid, 1250 Invalid, 804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 792 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-03-04 09:32:11,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1534 states. [2025-03-04 09:32:11,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1534 to 1298. [2025-03-04 09:32:11,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1298 states, 663 states have (on average 2.090497737556561) internal successors, (1386), 1278 states have internal predecessors, (1386), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-04 09:32:11,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1298 states to 1298 states and 1420 transitions. [2025-03-04 09:32:11,519 INFO L78 Accepts]: Start accepts. Automaton has 1298 states and 1420 transitions. Word has length 3 [2025-03-04 09:32:11,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:32:11,519 INFO L471 AbstractCegarLoop]: Abstraction has 1298 states and 1420 transitions. [2025-03-04 09:32:11,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:32:11,519 INFO L276 IsEmpty]: Start isEmpty. Operand 1298 states and 1420 transitions. [2025-03-04 09:32:11,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-03-04 09:32:11,519 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:32:11,519 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-03-04 09:32:11,526 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-04 09:32:11,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:32:11,720 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr614REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 622 more)] === [2025-03-04 09:32:11,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:32:11,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1432867, now seen corresponding path program 1 times [2025-03-04 09:32:11,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:32:11,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [112439221] [2025-03-04 09:32:11,721 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:32:11,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:32:11,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:32:11,723 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:32:11,723 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-04 09:32:11,820 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-04 09:32:11,832 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-04 09:32:11,832 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:32:11,832 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:32:11,834 INFO L256 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 09:32:11,836 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:32:11,847 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-04 09:32:11,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:32:11,859 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:32:11,860 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:32:11,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112439221] [2025-03-04 09:32:11,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [112439221] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:32:11,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:32:11,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 09:32:11,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757740355] [2025-03-04 09:32:11,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:32:11,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:32:11,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:32:11,861 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:32:11,861 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:32:11,861 INFO L87 Difference]: Start difference. First operand 1298 states and 1420 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:32:13,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:32:13,902 INFO L93 Difference]: Finished difference Result 1897 states and 2069 transitions. [2025-03-04 09:32:13,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:32:13,902 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2025-03-04 09:32:13,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:32:13,907 INFO L225 Difference]: With dead ends: 1897 [2025-03-04 09:32:13,907 INFO L226 Difference]: Without dead ends: 1897 [2025-03-04 09:32:13,908 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:32:13,908 INFO L435 NwaCegarLoop]: 1041 mSDtfsCounter, 632 mSDsluCounter, 705 mSDsCounter, 0 mSdLazyCounter, 916 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 639 SdHoareTripleChecker+Valid, 1746 SdHoareTripleChecker+Invalid, 921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-03-04 09:32:13,908 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [639 Valid, 1746 Invalid, 921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 916 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-03-04 09:32:13,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1897 states. [2025-03-04 09:32:13,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1897 to 1509. [2025-03-04 09:32:13,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1509 states, 873 states have (on average 2.0721649484536084) internal successors, (1809), 1487 states have internal predecessors, (1809), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2025-03-04 09:32:13,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1509 states to 1509 states and 1847 transitions. [2025-03-04 09:32:13,931 INFO L78 Accepts]: Start accepts. Automaton has 1509 states and 1847 transitions. Word has length 3 [2025-03-04 09:32:13,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:32:13,931 INFO L471 AbstractCegarLoop]: Abstraction has 1509 states and 1847 transitions. [2025-03-04 09:32:13,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:32:13,931 INFO L276 IsEmpty]: Start isEmpty. Operand 1509 states and 1847 transitions. [2025-03-04 09:32:13,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-03-04 09:32:13,931 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:32:13,932 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:32:13,938 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-04 09:32:14,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:32:14,132 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr610REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 622 more)] === [2025-03-04 09:32:14,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:32:14,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1816565268, now seen corresponding path program 1 times [2025-03-04 09:32:14,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:32:14,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [877104188] [2025-03-04 09:32:14,134 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:32:14,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:32:14,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:32:14,137 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:32:14,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-04 09:32:14,260 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-04 09:32:14,279 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-04 09:32:14,279 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:32:14,279 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:32:14,281 INFO L256 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-04 09:32:14,283 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:32:14,288 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-04 09:32:14,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-04 09:32:14,331 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-03-04 09:32:14,342 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-04 09:32:14,343 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-03-04 09:32:14,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:32:14,361 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:32:14,362 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:32:14,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877104188] [2025-03-04 09:32:14,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877104188] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:32:14,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:32:14,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:32:14,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025660970] [2025-03-04 09:32:14,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:32:14,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:32:14,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:32:14,362 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:32:14,362 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:32:14,362 INFO L87 Difference]: Start difference. First operand 1509 states and 1847 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:32:18,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:32:18,297 INFO L93 Difference]: Finished difference Result 2587 states and 3006 transitions. [2025-03-04 09:32:18,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:32:18,298 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-03-04 09:32:18,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:32:18,306 INFO L225 Difference]: With dead ends: 2587 [2025-03-04 09:32:18,306 INFO L226 Difference]: Without dead ends: 2587 [2025-03-04 09:32:18,307 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:32:18,307 INFO L435 NwaCegarLoop]: 699 mSDtfsCounter, 1122 mSDsluCounter, 1094 mSDsCounter, 0 mSdLazyCounter, 2201 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1128 SdHoareTripleChecker+Valid, 1793 SdHoareTripleChecker+Invalid, 2214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 2201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2025-03-04 09:32:18,307 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1128 Valid, 1793 Invalid, 2214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 2201 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2025-03-04 09:32:18,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2587 states. [2025-03-04 09:32:18,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2587 to 1656. [2025-03-04 09:32:18,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1656 states, 1020 states have (on average 2.052941176470588) internal successors, (2094), 1634 states have internal predecessors, (2094), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2025-03-04 09:32:18,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1656 states to 1656 states and 2132 transitions. [2025-03-04 09:32:18,350 INFO L78 Accepts]: Start accepts. Automaton has 1656 states and 2132 transitions. Word has length 8 [2025-03-04 09:32:18,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:32:18,350 INFO L471 AbstractCegarLoop]: Abstraction has 1656 states and 2132 transitions. [2025-03-04 09:32:18,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:32:18,351 INFO L276 IsEmpty]: Start isEmpty. Operand 1656 states and 2132 transitions. [2025-03-04 09:32:18,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-03-04 09:32:18,351 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:32:18,351 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:32:18,362 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-04 09:32:18,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:32:18,552 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr608REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 622 more)] === [2025-03-04 09:32:18,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:32:18,552 INFO L85 PathProgramCache]: Analyzing trace with hash 478949790, now seen corresponding path program 1 times [2025-03-04 09:32:18,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:32:18,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [334576201] [2025-03-04 09:32:18,553 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:32:18,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:32:18,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:32:18,555 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:32:18,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-04 09:32:18,671 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-04 09:32:18,689 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-04 09:32:18,689 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:32:18,689 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:32:18,692 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-04 09:32:18,698 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:32:18,706 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-04 09:32:18,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:32:18,757 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:32:18,757 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:32:18,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334576201] [2025-03-04 09:32:18,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334576201] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:32:18,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:32:18,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:32:18,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481601511] [2025-03-04 09:32:18,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:32:18,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:32:18,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:32:18,758 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:32:18,758 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:32:18,758 INFO L87 Difference]: Start difference. First operand 1656 states and 2132 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:32:21,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:32:21,369 INFO L93 Difference]: Finished difference Result 2308 states and 2985 transitions. [2025-03-04 09:32:21,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 09:32:21,369 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2025-03-04 09:32:21,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:32:21,376 INFO L225 Difference]: With dead ends: 2308 [2025-03-04 09:32:21,376 INFO L226 Difference]: Without dead ends: 2308 [2025-03-04 09:32:21,376 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:32:21,378 INFO L435 NwaCegarLoop]: 1425 mSDtfsCounter, 700 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 1746 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 2913 SdHoareTripleChecker+Invalid, 1760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-03-04 09:32:21,379 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [702 Valid, 2913 Invalid, 1760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1746 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-03-04 09:32:21,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2308 states. [2025-03-04 09:32:21,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2308 to 1648. [2025-03-04 09:32:21,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1648 states, 1022 states have (on average 2.028375733855186) internal successors, (2073), 1626 states have internal predecessors, (2073), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2025-03-04 09:32:21,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1648 states to 1648 states and 2111 transitions. [2025-03-04 09:32:21,411 INFO L78 Accepts]: Start accepts. Automaton has 1648 states and 2111 transitions. Word has length 9 [2025-03-04 09:32:21,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:32:21,412 INFO L471 AbstractCegarLoop]: Abstraction has 1648 states and 2111 transitions. [2025-03-04 09:32:21,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:32:21,412 INFO L276 IsEmpty]: Start isEmpty. Operand 1648 states and 2111 transitions. [2025-03-04 09:32:21,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-03-04 09:32:21,413 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:32:21,413 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:32:21,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-04 09:32:21,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:32:21,614 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr607REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 622 more)] === [2025-03-04 09:32:21,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:32:21,615 INFO L85 PathProgramCache]: Analyzing trace with hash 478949789, now seen corresponding path program 1 times [2025-03-04 09:32:21,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:32:21,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1366704579] [2025-03-04 09:32:21,615 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:32:21,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:32:21,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:32:21,617 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:32:21,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-04 09:32:21,729 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-04 09:32:21,751 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-04 09:32:21,751 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:32:21,751 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:32:21,754 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 09:32:21,756 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:32:21,766 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-04 09:32:21,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:32:21,791 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:32:21,792 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:32:21,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366704579] [2025-03-04 09:32:21,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366704579] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:32:21,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:32:21,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:32:21,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717282042] [2025-03-04 09:32:21,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:32:21,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:32:21,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:32:21,793 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:32:21,793 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:32:21,793 INFO L87 Difference]: Start difference. First operand 1648 states and 2111 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:32:23,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:32:23,443 INFO L93 Difference]: Finished difference Result 2191 states and 2881 transitions. [2025-03-04 09:32:23,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 09:32:23,444 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2025-03-04 09:32:23,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:32:23,449 INFO L225 Difference]: With dead ends: 2191 [2025-03-04 09:32:23,449 INFO L226 Difference]: Without dead ends: 2191 [2025-03-04 09:32:23,449 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:32:23,450 INFO L435 NwaCegarLoop]: 1218 mSDtfsCounter, 919 mSDsluCounter, 1280 mSDsCounter, 0 mSdLazyCounter, 1655 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 2498 SdHoareTripleChecker+Invalid, 1704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-03-04 09:32:23,450 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [922 Valid, 2498 Invalid, 1704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1655 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-03-04 09:32:23,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2191 states. [2025-03-04 09:32:23,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2191 to 1603. [2025-03-04 09:32:23,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1603 states, 1022 states have (on average 1.9696673189823874) internal successors, (2013), 1581 states have internal predecessors, (2013), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2025-03-04 09:32:23,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1603 states to 1603 states and 2051 transitions. [2025-03-04 09:32:23,472 INFO L78 Accepts]: Start accepts. Automaton has 1603 states and 2051 transitions. Word has length 9 [2025-03-04 09:32:23,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:32:23,473 INFO L471 AbstractCegarLoop]: Abstraction has 1603 states and 2051 transitions. [2025-03-04 09:32:23,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:32:23,473 INFO L276 IsEmpty]: Start isEmpty. Operand 1603 states and 2051 transitions. [2025-03-04 09:32:23,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-03-04 09:32:23,474 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:32:23,474 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:32:23,480 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-04 09:32:23,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:32:23,674 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr291REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 622 more)] === [2025-03-04 09:32:23,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:32:23,675 INFO L85 PathProgramCache]: Analyzing trace with hash 2083823030, now seen corresponding path program 1 times [2025-03-04 09:32:23,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:32:23,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [823182965] [2025-03-04 09:32:23,675 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:32:23,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:32:23,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:32:23,677 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:32:23,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-04 09:32:23,770 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-04 09:32:23,788 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-04 09:32:23,788 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:32:23,788 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:32:23,791 INFO L256 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:32:23,792 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:32:23,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:32:23,819 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:32:23,819 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:32:23,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823182965] [2025-03-04 09:32:23,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [823182965] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:32:23,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:32:23,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:32:23,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314082608] [2025-03-04 09:32:23,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:32:23,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:32:23,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:32:23,820 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:32:23,820 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:32:23,820 INFO L87 Difference]: Start difference. First operand 1603 states and 2051 transitions. Second operand has 4 states, 3 states have (on average 4.0) 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) [2025-03-04 09:32:25,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:32:25,209 INFO L93 Difference]: Finished difference Result 1820 states and 2225 transitions. [2025-03-04 09:32:25,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:32:25,210 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) 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 [2025-03-04 09:32:25,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:32:25,214 INFO L225 Difference]: With dead ends: 1820 [2025-03-04 09:32:25,214 INFO L226 Difference]: Without dead ends: 1820 [2025-03-04 09:32:25,214 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 [2025-03-04 09:32:25,214 INFO L435 NwaCegarLoop]: 837 mSDtfsCounter, 928 mSDsluCounter, 956 mSDsCounter, 0 mSdLazyCounter, 1312 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 931 SdHoareTripleChecker+Valid, 1793 SdHoareTripleChecker+Invalid, 1339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-04 09:32:25,215 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [931 Valid, 1793 Invalid, 1339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1312 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-04 09:32:25,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1820 states. [2025-03-04 09:32:25,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1820 to 1580. [2025-03-04 09:32:25,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1580 states, 1022 states have (on average 1.9246575342465753) internal successors, (1967), 1558 states have internal predecessors, (1967), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2025-03-04 09:32:25,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 2005 transitions. [2025-03-04 09:32:25,235 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 2005 transitions. Word has length 12 [2025-03-04 09:32:25,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:32:25,235 INFO L471 AbstractCegarLoop]: Abstraction has 1580 states and 2005 transitions. [2025-03-04 09:32:25,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) 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) [2025-03-04 09:32:25,235 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 2005 transitions. [2025-03-04 09:32:25,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-03-04 09:32:25,235 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:32:25,235 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:32:25,242 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-04 09:32:25,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:32:25,436 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr292REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 622 more)] === [2025-03-04 09:32:25,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:32:25,436 INFO L85 PathProgramCache]: Analyzing trace with hash 2083823031, now seen corresponding path program 1 times [2025-03-04 09:32:25,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:32:25,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [879498165] [2025-03-04 09:32:25,437 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:32:25,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:32:25,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:32:25,438 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:32:25,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-04 09:32:25,532 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-04 09:32:25,572 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-04 09:32:25,572 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:32:25,572 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:32:25,574 INFO L256 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-04 09:32:25,576 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:32:25,581 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-04 09:32:25,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:32:25,647 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:32:25,647 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:32:25,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879498165] [2025-03-04 09:32:25,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879498165] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:32:25,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:32:25,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:32:25,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184815740] [2025-03-04 09:32:25,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:32:25,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:32:25,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:32:25,648 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:32:25,648 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:32:25,648 INFO L87 Difference]: Start difference. First operand 1580 states and 2005 transitions. Second operand has 4 states, 3 states have (on average 4.0) 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) [2025-03-04 09:32:27,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:32:27,813 INFO L93 Difference]: Finished difference Result 2127 states and 2594 transitions. [2025-03-04 09:32:27,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:32:27,814 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) 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 [2025-03-04 09:32:27,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:32:27,818 INFO L225 Difference]: With dead ends: 2127 [2025-03-04 09:32:27,818 INFO L226 Difference]: Without dead ends: 2127 [2025-03-04 09:32:27,818 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 [2025-03-04 09:32:27,819 INFO L435 NwaCegarLoop]: 993 mSDtfsCounter, 611 mSDsluCounter, 1266 mSDsCounter, 0 mSdLazyCounter, 1501 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 618 SdHoareTripleChecker+Valid, 2259 SdHoareTripleChecker+Invalid, 1516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2025-03-04 09:32:27,819 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [618 Valid, 2259 Invalid, 1516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1501 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2025-03-04 09:32:27,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2127 states. [2025-03-04 09:32:27,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2127 to 1773. [2025-03-04 09:32:27,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1773 states, 1213 states have (on average 1.9175597691673536) internal successors, (2326), 1749 states have internal predecessors, (2326), 23 states have call successors, (23), 5 states have call predecessors, (23), 4 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2025-03-04 09:32:27,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1773 states to 1773 states and 2368 transitions. [2025-03-04 09:32:27,838 INFO L78 Accepts]: Start accepts. Automaton has 1773 states and 2368 transitions. Word has length 12 [2025-03-04 09:32:27,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:32:27,838 INFO L471 AbstractCegarLoop]: Abstraction has 1773 states and 2368 transitions. [2025-03-04 09:32:27,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) 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) [2025-03-04 09:32:27,838 INFO L276 IsEmpty]: Start isEmpty. Operand 1773 states and 2368 transitions. [2025-03-04 09:32:27,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-03-04 09:32:27,839 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:32:27,839 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:32:27,849 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-04 09:32:28,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:32:28,039 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 622 more)] === [2025-03-04 09:32:28,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:32:28,040 INFO L85 PathProgramCache]: Analyzing trace with hash -228522914, now seen corresponding path program 1 times [2025-03-04 09:32:28,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:32:28,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1719722068] [2025-03-04 09:32:28,040 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:32:28,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:32:28,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:32:28,042 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:32:28,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-04 09:32:28,135 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-04 09:32:28,154 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-04 09:32:28,154 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:32:28,154 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:32:28,156 INFO L256 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-04 09:32:28,157 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:32:28,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:32:28,202 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:32:28,202 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:32:28,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719722068] [2025-03-04 09:32:28,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1719722068] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:32:28,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:32:28,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:32:28,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409144145] [2025-03-04 09:32:28,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:32:28,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:32:28,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:32:28,203 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:32:28,203 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:32:28,203 INFO L87 Difference]: Start difference. First operand 1773 states and 2368 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:32:28,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:32:28,738 INFO L93 Difference]: Finished difference Result 2139 states and 2640 transitions. [2025-03-04 09:32:28,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:32:28,739 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2025-03-04 09:32:28,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:32:28,743 INFO L225 Difference]: With dead ends: 2139 [2025-03-04 09:32:28,743 INFO L226 Difference]: Without dead ends: 2139 [2025-03-04 09:32:28,743 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:32:28,743 INFO L435 NwaCegarLoop]: 1460 mSDtfsCounter, 611 mSDsluCounter, 2474 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 3934 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-04 09:32:28,744 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [616 Valid, 3934 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-04 09:32:28,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2139 states. [2025-03-04 09:32:28,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2139 to 1788. [2025-03-04 09:32:28,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1788 states, 1227 states have (on average 1.9046454767726162) internal successors, (2337), 1763 states have internal predecessors, (2337), 24 states have call successors, (24), 5 states have call predecessors, (24), 4 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-04 09:32:28,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1788 states to 1788 states and 2381 transitions. [2025-03-04 09:32:28,767 INFO L78 Accepts]: Start accepts. Automaton has 1788 states and 2381 transitions. Word has length 13 [2025-03-04 09:32:28,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:32:28,767 INFO L471 AbstractCegarLoop]: Abstraction has 1788 states and 2381 transitions. [2025-03-04 09:32:28,767 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:32:28,767 INFO L276 IsEmpty]: Start isEmpty. Operand 1788 states and 2381 transitions. [2025-03-04 09:32:28,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-03-04 09:32:28,768 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:32:28,768 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:32:28,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-03-04 09:32:28,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:32:28,970 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr268REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 622 more)] === [2025-03-04 09:32:28,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:32:28,970 INFO L85 PathProgramCache]: Analyzing trace with hash 173960522, now seen corresponding path program 1 times [2025-03-04 09:32:28,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:32:28,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [808078068] [2025-03-04 09:32:28,971 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:32:28,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:32:28,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:32:28,973 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:32:28,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-04 09:32:29,080 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-04 09:32:29,099 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-04 09:32:29,100 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:32:29,100 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:32:29,102 INFO L256 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:32:29,104 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:32:29,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:32:29,123 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:32:29,123 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:32:29,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808078068] [2025-03-04 09:32:29,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808078068] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:32:29,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:32:29,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:32:29,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536458806] [2025-03-04 09:32:29,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:32:29,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:32:29,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:32:29,124 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:32:29,124 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:32:29,125 INFO L87 Difference]: Start difference. First operand 1788 states and 2381 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:32:29,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:32:29,171 INFO L93 Difference]: Finished difference Result 1716 states and 2258 transitions. [2025-03-04 09:32:29,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 09:32:29,172 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 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 13 [2025-03-04 09:32:29,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:32:29,176 INFO L225 Difference]: With dead ends: 1716 [2025-03-04 09:32:29,176 INFO L226 Difference]: Without dead ends: 1716 [2025-03-04 09:32:29,176 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:32:29,177 INFO L435 NwaCegarLoop]: 1174 mSDtfsCounter, 45 mSDsluCounter, 2325 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 3499 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 [2025-03-04 09:32:29,178 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 3499 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 09:32:29,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1716 states. [2025-03-04 09:32:29,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1716 to 1716. [2025-03-04 09:32:29,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1716 states, 1174 states have (on average 1.8858603066439523) internal successors, (2214), 1691 states have internal predecessors, (2214), 24 states have call successors, (24), 5 states have call predecessors, (24), 4 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-04 09:32:29,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1716 states to 1716 states and 2258 transitions. [2025-03-04 09:32:29,193 INFO L78 Accepts]: Start accepts. Automaton has 1716 states and 2258 transitions. Word has length 13 [2025-03-04 09:32:29,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:32:29,193 INFO L471 AbstractCegarLoop]: Abstraction has 1716 states and 2258 transitions. [2025-03-04 09:32:29,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:32:29,194 INFO L276 IsEmpty]: Start isEmpty. Operand 1716 states and 2258 transitions. [2025-03-04 09:32:29,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-03-04 09:32:29,195 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:32:29,195 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:32:29,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-03-04 09:32:29,396 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:32:29,396 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 622 more)] === [2025-03-04 09:32:29,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:32:29,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1777616277, now seen corresponding path program 1 times [2025-03-04 09:32:29,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:32:29,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1060884060] [2025-03-04 09:32:29,397 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:32:29,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:32:29,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:32:29,398 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:32:29,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-04 09:32:29,496 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-04 09:32:29,516 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-04 09:32:29,516 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:32:29,516 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:32:29,518 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 09:32:29,520 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:32:29,524 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-04 09:32:29,525 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-04 09:32:29,525 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-04 09:32:29,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2025-03-04 09:32:29,564 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-04 09:32:29,565 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2025-03-04 09:32:29,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:32:29,586 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:32:29,586 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:32:29,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060884060] [2025-03-04 09:32:29,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1060884060] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:32:29,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:32:29,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:32:29,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409538792] [2025-03-04 09:32:29,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:32:29,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:32:29,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:32:29,587 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:32:29,587 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:32:29,587 INFO L87 Difference]: Start difference. First operand 1716 states and 2258 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:32:29,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:32:29,789 INFO L93 Difference]: Finished difference Result 2429 states and 2824 transitions. [2025-03-04 09:32:29,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:32:29,789 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-03-04 09:32:29,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:32:29,795 INFO L225 Difference]: With dead ends: 2429 [2025-03-04 09:32:29,795 INFO L226 Difference]: Without dead ends: 2429 [2025-03-04 09:32:29,795 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 [2025-03-04 09:32:29,795 INFO L435 NwaCegarLoop]: 1379 mSDtfsCounter, 1061 mSDsluCounter, 2528 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1075 SdHoareTripleChecker+Valid, 3907 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-04 09:32:29,795 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1075 Valid, 3907 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-04 09:32:29,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2429 states. [2025-03-04 09:32:29,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2429 to 1401. [2025-03-04 09:32:29,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1401 states, 861 states have (on average 1.9036004645760742) internal successors, (1639), 1378 states have internal predecessors, (1639), 22 states have call successors, (22), 5 states have call predecessors, (22), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2025-03-04 09:32:29,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1401 states to 1401 states and 1679 transitions. [2025-03-04 09:32:29,815 INFO L78 Accepts]: Start accepts. Automaton has 1401 states and 1679 transitions. Word has length 16 [2025-03-04 09:32:29,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:32:29,815 INFO L471 AbstractCegarLoop]: Abstraction has 1401 states and 1679 transitions. [2025-03-04 09:32:29,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:32:29,815 INFO L276 IsEmpty]: Start isEmpty. Operand 1401 states and 1679 transitions. [2025-03-04 09:32:29,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-03-04 09:32:29,816 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:32:29,816 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:32:29,822 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-03-04 09:32:30,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:32:30,017 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr599REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 622 more)] === [2025-03-04 09:32:30,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:32:30,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1440762696, now seen corresponding path program 1 times [2025-03-04 09:32:30,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:32:30,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [312421092] [2025-03-04 09:32:30,021 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:32:30,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:32:30,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:32:30,026 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:32:30,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-04 09:32:30,147 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-04 09:32:30,178 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-04 09:32:30,178 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:32:30,178 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:32:30,183 INFO L256 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:32:30,184 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:32:30,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:32:30,211 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:32:30,211 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:32:30,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312421092] [2025-03-04 09:32:30,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [312421092] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:32:30,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:32:30,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:32:30,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868185718] [2025-03-04 09:32:30,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:32:30,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:32:30,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:32:30,211 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:32:30,211 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:32:30,211 INFO L87 Difference]: Start difference. First operand 1401 states and 1679 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:32:31,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:32:31,828 INFO L93 Difference]: Finished difference Result 1780 states and 2153 transitions. [2025-03-04 09:32:31,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:32:31,829 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2025-03-04 09:32:31,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:32:31,832 INFO L225 Difference]: With dead ends: 1780 [2025-03-04 09:32:31,832 INFO L226 Difference]: Without dead ends: 1780 [2025-03-04 09:32:31,833 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:32:31,833 INFO L435 NwaCegarLoop]: 744 mSDtfsCounter, 883 mSDsluCounter, 893 mSDsCounter, 0 mSdLazyCounter, 1321 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 886 SdHoareTripleChecker+Valid, 1637 SdHoareTripleChecker+Invalid, 1349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-03-04 09:32:31,833 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [886 Valid, 1637 Invalid, 1349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1321 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-03-04 09:32:31,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1780 states. [2025-03-04 09:32:31,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1780 to 1378. [2025-03-04 09:32:31,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1378 states, 861 states have (on average 1.8501742160278745) internal successors, (1593), 1355 states have internal predecessors, (1593), 22 states have call successors, (22), 5 states have call predecessors, (22), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2025-03-04 09:32:31,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1378 states to 1378 states and 1633 transitions. [2025-03-04 09:32:31,844 INFO L78 Accepts]: Start accepts. Automaton has 1378 states and 1633 transitions. Word has length 18 [2025-03-04 09:32:31,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:32:31,844 INFO L471 AbstractCegarLoop]: Abstraction has 1378 states and 1633 transitions. [2025-03-04 09:32:31,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:32:31,844 INFO L276 IsEmpty]: Start isEmpty. Operand 1378 states and 1633 transitions. [2025-03-04 09:32:31,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-03-04 09:32:31,845 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:32:31,845 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:32:31,855 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-03-04 09:32:32,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:32:32,045 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr600REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 622 more)] === [2025-03-04 09:32:32,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:32:32,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1440762697, now seen corresponding path program 1 times [2025-03-04 09:32:32,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:32:32,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [83328338] [2025-03-04 09:32:32,046 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:32:32,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:32:32,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:32:32,048 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:32:32,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-04 09:32:32,170 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-04 09:32:32,202 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-04 09:32:32,202 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:32:32,202 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:32:32,206 INFO L256 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-04 09:32:32,208 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:32:32,215 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-04 09:32:32,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:32:32,289 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:32:32,289 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:32:32,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83328338] [2025-03-04 09:32:32,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83328338] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:32:32,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:32:32,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:32:32,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120685415] [2025-03-04 09:32:32,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:32:32,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 09:32:32,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:32:32,290 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 09:32:32,290 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:32:32,291 INFO L87 Difference]: Start difference. First operand 1378 states and 1633 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:32:34,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:32:34,981 INFO L93 Difference]: Finished difference Result 2019 states and 2397 transitions. [2025-03-04 09:32:34,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 09:32:34,981 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2025-03-04 09:32:34,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:32:34,985 INFO L225 Difference]: With dead ends: 2019 [2025-03-04 09:32:34,985 INFO L226 Difference]: Without dead ends: 2019 [2025-03-04 09:32:34,986 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-03-04 09:32:34,986 INFO L435 NwaCegarLoop]: 1334 mSDtfsCounter, 738 mSDsluCounter, 2194 mSDsCounter, 0 mSdLazyCounter, 2339 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 740 SdHoareTripleChecker+Valid, 3528 SdHoareTripleChecker+Invalid, 2362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 2339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2025-03-04 09:32:34,986 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [740 Valid, 3528 Invalid, 2362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 2339 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2025-03-04 09:32:34,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2019 states. [2025-03-04 09:32:34,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2019 to 1492. [2025-03-04 09:32:34,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1492 states, 975 states have (on average 1.7753846153846153) internal successors, (1731), 1469 states have internal predecessors, (1731), 22 states have call successors, (22), 5 states have call predecessors, (22), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2025-03-04 09:32:34,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1492 states to 1492 states and 1771 transitions. [2025-03-04 09:32:34,998 INFO L78 Accepts]: Start accepts. Automaton has 1492 states and 1771 transitions. Word has length 18 [2025-03-04 09:32:34,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:32:34,998 INFO L471 AbstractCegarLoop]: Abstraction has 1492 states and 1771 transitions. [2025-03-04 09:32:34,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:32:34,999 INFO L276 IsEmpty]: Start isEmpty. Operand 1492 states and 1771 transitions. [2025-03-04 09:32:34,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-03-04 09:32:34,999 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:32:34,999 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:32:35,008 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-03-04 09:32:35,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:32:35,200 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr600REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 622 more)] === [2025-03-04 09:32:35,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:32:35,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1156937947, now seen corresponding path program 1 times [2025-03-04 09:32:35,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:32:35,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1030106108] [2025-03-04 09:32:35,201 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:32:35,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:32:35,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:32:35,202 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:32:35,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-04 09:32:35,321 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-03-04 09:32:35,382 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-03-04 09:32:35,382 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:32:35,382 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:32:35,393 INFO L256 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-04 09:32:35,395 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:32:35,404 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-04 09:32:35,602 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:32:35,602 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:32:36,021 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:32:36,021 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:32:36,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030106108] [2025-03-04 09:32:36,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1030106108] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 09:32:36,022 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 09:32:36,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2025-03-04 09:32:36,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159111873] [2025-03-04 09:32:36,022 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 09:32:36,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-04 09:32:36,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:32:36,023 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-04 09:32:36,023 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2025-03-04 09:32:36,023 INFO L87 Difference]: Start difference. First operand 1492 states and 1771 transitions. Second operand has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:32:44,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:32:44,152 INFO L93 Difference]: Finished difference Result 2375 states and 2887 transitions. [2025-03-04 09:32:44,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-04 09:32:44,152 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 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 37 [2025-03-04 09:32:44,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:32:44,158 INFO L225 Difference]: With dead ends: 2375 [2025-03-04 09:32:44,158 INFO L226 Difference]: Without dead ends: 2375 [2025-03-04 09:32:44,158 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2025-03-04 09:32:44,159 INFO L435 NwaCegarLoop]: 1386 mSDtfsCounter, 2368 mSDsluCounter, 4084 mSDsCounter, 0 mSdLazyCounter, 3997 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2370 SdHoareTripleChecker+Valid, 5470 SdHoareTripleChecker+Invalid, 4027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 3997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2025-03-04 09:32:44,159 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2370 Valid, 5470 Invalid, 4027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 3997 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2025-03-04 09:32:44,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2375 states. [2025-03-04 09:32:44,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2375 to 1656. [2025-03-04 09:32:44,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1656 states, 1139 states have (on average 1.723441615452151) internal successors, (1963), 1633 states have internal predecessors, (1963), 22 states have call successors, (22), 5 states have call predecessors, (22), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2025-03-04 09:32:44,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1656 states to 1656 states and 2003 transitions. [2025-03-04 09:32:44,177 INFO L78 Accepts]: Start accepts. Automaton has 1656 states and 2003 transitions. Word has length 37 [2025-03-04 09:32:44,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:32:44,177 INFO L471 AbstractCegarLoop]: Abstraction has 1656 states and 2003 transitions. [2025-03-04 09:32:44,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:32:44,178 INFO L276 IsEmpty]: Start isEmpty. Operand 1656 states and 2003 transitions. [2025-03-04 09:32:44,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2025-03-04 09:32:44,180 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:32:44,180 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:32:44,194 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-03-04 09:32:44,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:32:44,380 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 622 more)] === [2025-03-04 09:32:44,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:32:44,381 INFO L85 PathProgramCache]: Analyzing trace with hash 309519805, now seen corresponding path program 1 times [2025-03-04 09:32:44,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:32:44,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [531468055] [2025-03-04 09:32:44,381 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:32:44,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:32:44,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:32:44,383 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:32:44,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-04 09:32:44,522 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 53 statements into 1 equivalence classes. [2025-03-04 09:32:44,587 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 53 of 53 statements. [2025-03-04 09:32:44,587 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:32:44,587 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:32:44,595 INFO L256 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:32:44,597 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:32:44,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:32:44,621 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:32:44,621 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:32:44,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531468055] [2025-03-04 09:32:44,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531468055] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:32:44,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:32:44,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:32:44,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484626825] [2025-03-04 09:32:44,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:32:44,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:32:44,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:32:44,621 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:32:44,621 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:32:44,621 INFO L87 Difference]: Start difference. First operand 1656 states and 2003 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:32:44,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:32:44,672 INFO L93 Difference]: Finished difference Result 1345 states and 1567 transitions. [2025-03-04 09:32:44,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 09:32:44,672 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2025-03-04 09:32:44,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:32:44,677 INFO L225 Difference]: With dead ends: 1345 [2025-03-04 09:32:44,677 INFO L226 Difference]: Without dead ends: 1345 [2025-03-04 09:32:44,678 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:32:44,678 INFO L435 NwaCegarLoop]: 1111 mSDtfsCounter, 56 mSDsluCounter, 2149 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 3260 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 09:32:44,678 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 3260 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 09:32:44,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1345 states. [2025-03-04 09:32:44,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1345 to 1343. [2025-03-04 09:32:44,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1343 states, 849 states have (on average 1.7962308598351002) internal successors, (1525), 1320 states have internal predecessors, (1525), 22 states have call successors, (22), 5 states have call predecessors, (22), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2025-03-04 09:32:44,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1343 states to 1343 states and 1565 transitions. [2025-03-04 09:32:44,692 INFO L78 Accepts]: Start accepts. Automaton has 1343 states and 1565 transitions. Word has length 53 [2025-03-04 09:32:44,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:32:44,693 INFO L471 AbstractCegarLoop]: Abstraction has 1343 states and 1565 transitions. [2025-03-04 09:32:44,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:32:44,693 INFO L276 IsEmpty]: Start isEmpty. Operand 1343 states and 1565 transitions. [2025-03-04 09:32:44,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2025-03-04 09:32:44,694 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:32:44,695 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:32:44,705 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-03-04 09:32:44,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:32:44,895 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 622 more)] === [2025-03-04 09:32:44,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:32:44,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1787766651, now seen corresponding path program 1 times [2025-03-04 09:32:44,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:32:44,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2142387886] [2025-03-04 09:32:44,896 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:32:44,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:32:44,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:32:44,897 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:32:44,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-03-04 09:32:45,022 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 61 statements into 1 equivalence classes. [2025-03-04 09:32:45,098 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 61 of 61 statements. [2025-03-04 09:32:45,098 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:32:45,098 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:32:45,108 INFO L256 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-04 09:32:45,110 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:32:45,135 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2025-03-04 09:32:45,135 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2025-03-04 09:32:45,164 INFO L349 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2025-03-04 09:32:45,164 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 16 treesize of output 17 [2025-03-04 09:32:45,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:32:45,370 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:32:45,370 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:32:45,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142387886] [2025-03-04 09:32:45,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142387886] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:32:45,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:32:45,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:32:45,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787249974] [2025-03-04 09:32:45,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:32:45,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 09:32:45,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:32:45,371 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 09:32:45,371 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:32:45,371 INFO L87 Difference]: Start difference. First operand 1343 states and 1565 transitions. Second operand has 5 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:32:47,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:32:47,530 INFO L93 Difference]: Finished difference Result 2446 states and 2864 transitions. [2025-03-04 09:32:47,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:32:47,530 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2025-03-04 09:32:47,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:32:47,535 INFO L225 Difference]: With dead ends: 2446 [2025-03-04 09:32:47,535 INFO L226 Difference]: Without dead ends: 2446 [2025-03-04 09:32:47,535 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:32:47,536 INFO L435 NwaCegarLoop]: 879 mSDtfsCounter, 962 mSDsluCounter, 1838 mSDsCounter, 0 mSdLazyCounter, 1989 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 962 SdHoareTripleChecker+Valid, 2717 SdHoareTripleChecker+Invalid, 1992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2025-03-04 09:32:47,536 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [962 Valid, 2717 Invalid, 1992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1989 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2025-03-04 09:32:47,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2446 states. [2025-03-04 09:32:47,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2446 to 1805. [2025-03-04 09:32:47,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1805 states, 1295 states have (on average 1.7806949806949808) internal successors, (2306), 1769 states have internal predecessors, (2306), 35 states have call successors, (35), 9 states have call predecessors, (35), 7 states have return successors, (31), 28 states have call predecessors, (31), 31 states have call successors, (31) [2025-03-04 09:32:47,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1805 states to 1805 states and 2372 transitions. [2025-03-04 09:32:47,554 INFO L78 Accepts]: Start accepts. Automaton has 1805 states and 2372 transitions. Word has length 61 [2025-03-04 09:32:47,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:32:47,555 INFO L471 AbstractCegarLoop]: Abstraction has 1805 states and 2372 transitions. [2025-03-04 09:32:47,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:32:47,555 INFO L276 IsEmpty]: Start isEmpty. Operand 1805 states and 2372 transitions. [2025-03-04 09:32:47,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2025-03-04 09:32:47,555 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:32:47,555 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:32:47,567 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-03-04 09:32:47,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:32:47,756 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 622 more)] === [2025-03-04 09:32:47,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:32:47,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1787766650, now seen corresponding path program 1 times [2025-03-04 09:32:47,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:32:47,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1139085274] [2025-03-04 09:32:47,757 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:32:47,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:32:47,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:32:47,758 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:32:47,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-03-04 09:32:47,881 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 61 statements into 1 equivalence classes. [2025-03-04 09:32:47,976 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 61 of 61 statements. [2025-03-04 09:32:47,976 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:32:47,976 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:32:47,985 INFO L256 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-03-04 09:32:47,987 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:32:48,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-04 09:32:48,021 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-03-04 09:32:48,062 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2025-03-04 09:32:48,063 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 14 [2025-03-04 09:32:48,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:32:48,464 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:32:48,464 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:32:48,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139085274] [2025-03-04 09:32:48,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139085274] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:32:48,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:32:48,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:32:48,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218312559] [2025-03-04 09:32:48,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:32:48,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 09:32:48,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:32:48,464 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 09:32:48,465 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-04 09:32:48,465 INFO L87 Difference]: Start difference. First operand 1805 states and 2372 transitions. Second operand has 6 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:32:51,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:32:51,220 INFO L93 Difference]: Finished difference Result 1810 states and 2378 transitions. [2025-03-04 09:32:51,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 09:32:51,221 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2025-03-04 09:32:51,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:32:51,224 INFO L225 Difference]: With dead ends: 1810 [2025-03-04 09:32:51,224 INFO L226 Difference]: Without dead ends: 1810 [2025-03-04 09:32:51,224 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2025-03-04 09:32:51,225 INFO L435 NwaCegarLoop]: 1098 mSDtfsCounter, 77 mSDsluCounter, 2137 mSDsCounter, 0 mSdLazyCounter, 2389 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 3235 SdHoareTripleChecker+Invalid, 2391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2025-03-04 09:32:51,225 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 3235 Invalid, 2391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2389 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2025-03-04 09:32:51,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1810 states. [2025-03-04 09:32:51,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1810 to 1810. [2025-03-04 09:32:51,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1810 states, 1299 states have (on average 1.7782909930715936) internal successors, (2310), 1773 states have internal predecessors, (2310), 36 states have call successors, (36), 10 states have call predecessors, (36), 7 states have return successors, (32), 28 states have call predecessors, (32), 32 states have call successors, (32) [2025-03-04 09:32:51,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1810 states to 1810 states and 2378 transitions. [2025-03-04 09:32:51,241 INFO L78 Accepts]: Start accepts. Automaton has 1810 states and 2378 transitions. Word has length 61 [2025-03-04 09:32:51,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:32:51,242 INFO L471 AbstractCegarLoop]: Abstraction has 1810 states and 2378 transitions. [2025-03-04 09:32:51,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:32:51,242 INFO L276 IsEmpty]: Start isEmpty. Operand 1810 states and 2378 transitions. [2025-03-04 09:32:51,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-03-04 09:32:51,242 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:32:51,242 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] [2025-03-04 09:32:51,255 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-03-04 09:32:51,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:32:51,443 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 622 more)] === [2025-03-04 09:32:51,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:32:51,443 INFO L85 PathProgramCache]: Analyzing trace with hash -735543096, now seen corresponding path program 1 times [2025-03-04 09:32:51,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:32:51,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1617284513] [2025-03-04 09:32:51,444 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:32:51,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:32:51,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:32:51,446 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:32:51,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-03-04 09:32:51,574 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-03-04 09:32:51,647 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-03-04 09:32:51,647 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:32:51,647 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:32:51,658 INFO L256 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-04 09:32:51,659 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:32:51,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:32:51,760 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:32:51,760 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:32:51,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617284513] [2025-03-04 09:32:51,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617284513] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:32:51,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:32:51,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-04 09:32:51,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443502166] [2025-03-04 09:32:51,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:32:51,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-04 09:32:51,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:32:51,761 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-04 09:32:51,761 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-04 09:32:51,761 INFO L87 Difference]: Start difference. First operand 1810 states and 2378 transitions. Second operand has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:32:51,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:32:51,819 INFO L93 Difference]: Finished difference Result 1818 states and 2386 transitions. [2025-03-04 09:32:51,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-04 09:32:51,821 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2025-03-04 09:32:51,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:32:51,823 INFO L225 Difference]: With dead ends: 1818 [2025-03-04 09:32:51,823 INFO L226 Difference]: Without dead ends: 1818 [2025-03-04 09:32:51,823 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2025-03-04 09:32:51,824 INFO L435 NwaCegarLoop]: 1119 mSDtfsCounter, 25 mSDsluCounter, 4545 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 5664 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 09:32:51,824 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 5664 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 09:32:51,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1818 states. [2025-03-04 09:32:51,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1818 to 1817. [2025-03-04 09:32:51,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1817 states, 1304 states have (on average 1.7753067484662577) internal successors, (2315), 1779 states have internal predecessors, (2315), 37 states have call successors, (37), 11 states have call predecessors, (37), 8 states have return successors, (33), 28 states have call predecessors, (33), 33 states have call successors, (33) [2025-03-04 09:32:51,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1817 states to 1817 states and 2385 transitions. [2025-03-04 09:32:51,839 INFO L78 Accepts]: Start accepts. Automaton has 1817 states and 2385 transitions. Word has length 69 [2025-03-04 09:32:51,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:32:51,840 INFO L471 AbstractCegarLoop]: Abstraction has 1817 states and 2385 transitions. [2025-03-04 09:32:51,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:32:51,840 INFO L276 IsEmpty]: Start isEmpty. Operand 1817 states and 2385 transitions. [2025-03-04 09:32:51,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2025-03-04 09:32:51,841 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:32:51,841 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] [2025-03-04 09:32:51,851 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-03-04 09:32:52,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:32:52,042 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr517REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 622 more)] === [2025-03-04 09:32:52,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:32:52,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1439500537, now seen corresponding path program 1 times [2025-03-04 09:32:52,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:32:52,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [644549765] [2025-03-04 09:32:52,043 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:32:52,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:32:52,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:32:52,045 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:32:52,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-03-04 09:32:52,177 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 72 statements into 1 equivalence classes. [2025-03-04 09:32:52,249 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 72 of 72 statements. [2025-03-04 09:32:52,249 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:32:52,250 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:32:52,259 INFO L256 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-04 09:32:52,261 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:32:52,404 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2025-03-04 09:32:52,404 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2025-03-04 09:32:52,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:32:52,407 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:32:52,407 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:32:52,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644549765] [2025-03-04 09:32:52,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644549765] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:32:52,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:32:52,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:32:52,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950614126] [2025-03-04 09:32:52,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:32:52,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 09:32:52,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:32:52,408 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 09:32:52,408 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:32:52,408 INFO L87 Difference]: Start difference. First operand 1817 states and 2385 transitions. Second operand has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-04 09:32:56,805 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-04 09:32:59,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:32:59,470 INFO L93 Difference]: Finished difference Result 2208 states and 2891 transitions. [2025-03-04 09:32:59,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 09:32:59,470 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 72 [2025-03-04 09:32:59,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:32:59,476 INFO L225 Difference]: With dead ends: 2208 [2025-03-04 09:32:59,476 INFO L226 Difference]: Without dead ends: 2208 [2025-03-04 09:32:59,476 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-04 09:32:59,480 INFO L435 NwaCegarLoop]: 693 mSDtfsCounter, 757 mSDsluCounter, 1417 mSDsCounter, 0 mSdLazyCounter, 1873 mSolverCounterSat, 29 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 2110 SdHoareTripleChecker+Invalid, 1906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1873 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2025-03-04 09:32:59,480 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [760 Valid, 2110 Invalid, 1906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1873 Invalid, 4 Unknown, 0 Unchecked, 7.0s Time] [2025-03-04 09:32:59,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2208 states. [2025-03-04 09:32:59,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2208 to 1814. [2025-03-04 09:32:59,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1814 states, 1304 states have (on average 1.7707055214723926) internal successors, (2309), 1776 states have internal predecessors, (2309), 37 states have call successors, (37), 11 states have call predecessors, (37), 8 states have return successors, (33), 28 states have call predecessors, (33), 33 states have call successors, (33) [2025-03-04 09:32:59,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1814 states to 1814 states and 2379 transitions. [2025-03-04 09:32:59,512 INFO L78 Accepts]: Start accepts. Automaton has 1814 states and 2379 transitions. Word has length 72 [2025-03-04 09:32:59,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:32:59,512 INFO L471 AbstractCegarLoop]: Abstraction has 1814 states and 2379 transitions. [2025-03-04 09:32:59,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-04 09:32:59,512 INFO L276 IsEmpty]: Start isEmpty. Operand 1814 states and 2379 transitions. [2025-03-04 09:32:59,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2025-03-04 09:32:59,513 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:32:59,513 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] [2025-03-04 09:32:59,528 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-03-04 09:32:59,713 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 [2025-03-04 09:32:59,713 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr518REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 622 more)] === [2025-03-04 09:32:59,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:32:59,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1439500538, now seen corresponding path program 1 times [2025-03-04 09:32:59,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:32:59,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1465982137] [2025-03-04 09:32:59,714 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:32:59,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:32:59,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:32:59,716 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) [2025-03-04 09:32:59,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-03-04 09:32:59,849 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 72 statements into 1 equivalence classes. [2025-03-04 09:32:59,931 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 72 of 72 statements. [2025-03-04 09:32:59,931 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:32:59,931 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:32:59,941 INFO L256 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-03-04 09:32:59,943 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:32:59,950 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-04 09:33:00,240 WARN L873 $PredicateComparison]: unable to prove that (exists ((|alt_malloc_#res.base| (_ BitVec 32))) (and (= (store |c_old(#length)| |alt_malloc_#res.base| (select |c_#length| |alt_malloc_#res.base|)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| |alt_malloc_#res.base|)))) is different from true [2025-03-04 09:33:00,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-04 09:33:00,250 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-03-04 09:33:00,257 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-04 09:33:00,257 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-03-04 09:33:00,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:33:00,261 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:33:00,261 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:33:00,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465982137] [2025-03-04 09:33:00,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465982137] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:33:00,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:33:00,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-04 09:33:00,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508227720] [2025-03-04 09:33:00,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:33:00,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-04 09:33:00,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:33:00,261 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-04 09:33:00,262 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=21, Unknown=1, NotChecked=8, Total=42 [2025-03-04 09:33:00,262 INFO L87 Difference]: Start difference. First operand 1814 states and 2379 transitions. Second operand has 7 states, 6 states have (on average 11.333333333333334) internal successors, (68), 7 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-04 09:33:03,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:33:03,730 INFO L93 Difference]: Finished difference Result 2836 states and 3695 transitions. [2025-03-04 09:33:03,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-04 09:33:03,731 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.333333333333334) internal successors, (68), 7 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 72 [2025-03-04 09:33:03,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:33:03,735 INFO L225 Difference]: With dead ends: 2836 [2025-03-04 09:33:03,735 INFO L226 Difference]: Without dead ends: 2836 [2025-03-04 09:33:03,735 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=28, Unknown=1, NotChecked=10, Total=56 [2025-03-04 09:33:03,736 INFO L435 NwaCegarLoop]: 1157 mSDtfsCounter, 1395 mSDsluCounter, 1738 mSDsCounter, 0 mSdLazyCounter, 3039 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1398 SdHoareTripleChecker+Valid, 2895 SdHoareTripleChecker+Invalid, 4980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 3039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1913 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2025-03-04 09:33:03,736 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1398 Valid, 2895 Invalid, 4980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 3039 Invalid, 0 Unknown, 1913 Unchecked, 3.4s Time] [2025-03-04 09:33:03,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2836 states. [2025-03-04 09:33:03,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2836 to 1806. [2025-03-04 09:33:03,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1806 states, 1304 states have (on average 1.758435582822086) internal successors, (2293), 1768 states have internal predecessors, (2293), 37 states have call successors, (37), 11 states have call predecessors, (37), 8 states have return successors, (33), 28 states have call predecessors, (33), 33 states have call successors, (33) [2025-03-04 09:33:03,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1806 states to 1806 states and 2363 transitions. [2025-03-04 09:33:03,773 INFO L78 Accepts]: Start accepts. Automaton has 1806 states and 2363 transitions. Word has length 72 [2025-03-04 09:33:03,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:33:03,773 INFO L471 AbstractCegarLoop]: Abstraction has 1806 states and 2363 transitions. [2025-03-04 09:33:03,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.333333333333334) internal successors, (68), 7 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-04 09:33:03,773 INFO L276 IsEmpty]: Start isEmpty. Operand 1806 states and 2363 transitions. [2025-03-04 09:33:03,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-03-04 09:33:03,773 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:33:03,773 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, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:33:03,788 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-03-04 09:33:03,974 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 [2025-03-04 09:33:03,974 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting alt_bzeroErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 622 more)] === [2025-03-04 09:33:03,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:33:03,975 INFO L85 PathProgramCache]: Analyzing trace with hash -530052229, now seen corresponding path program 1 times [2025-03-04 09:33:03,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:33:03,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [183482779] [2025-03-04 09:33:03,975 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:33:03,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:33:03,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:33:03,980 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) [2025-03-04 09:33:03,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-03-04 09:33:04,133 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-03-04 09:33:04,209 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-03-04 09:33:04,210 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:33:04,210 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:33:04,220 INFO L256 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-04 09:33:04,222 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:33:04,226 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-04 09:33:04,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-04 09:33:04,261 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-03-04 09:33:04,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:33:04,287 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:33:04,287 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:33:04,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183482779] [2025-03-04 09:33:04,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183482779] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:33:04,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:33:04,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-04 09:33:04,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575506384] [2025-03-04 09:33:04,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:33:04,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-04 09:33:04,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:33:04,288 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-04 09:33:04,288 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-04 09:33:04,288 INFO L87 Difference]: Start difference. First operand 1806 states and 2363 transitions. Second operand has 8 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-04 09:33:06,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:33:06,753 INFO L93 Difference]: Finished difference Result 1821 states and 2379 transitions. [2025-03-04 09:33:06,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-04 09:33:06,753 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 79 [2025-03-04 09:33:06,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:33:06,756 INFO L225 Difference]: With dead ends: 1821 [2025-03-04 09:33:06,756 INFO L226 Difference]: Without dead ends: 1821 [2025-03-04 09:33:06,756 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2025-03-04 09:33:06,757 INFO L435 NwaCegarLoop]: 1105 mSDtfsCounter, 16 mSDsluCounter, 3649 mSDsCounter, 0 mSdLazyCounter, 3036 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 4754 SdHoareTripleChecker+Invalid, 3038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2025-03-04 09:33:06,757 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 4754 Invalid, 3038 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3036 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2025-03-04 09:33:06,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1821 states. [2025-03-04 09:33:06,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1821 to 1820. [2025-03-04 09:33:06,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1820 states, 1316 states have (on average 1.7545592705167172) internal successors, (2309), 1780 states have internal predecessors, (2309), 37 states have call successors, (37), 13 states have call predecessors, (37), 10 states have return successors, (33), 28 states have call predecessors, (33), 33 states have call successors, (33) [2025-03-04 09:33:06,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1820 states to 1820 states and 2379 transitions. [2025-03-04 09:33:06,771 INFO L78 Accepts]: Start accepts. Automaton has 1820 states and 2379 transitions. Word has length 79 [2025-03-04 09:33:06,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:33:06,772 INFO L471 AbstractCegarLoop]: Abstraction has 1820 states and 2379 transitions. [2025-03-04 09:33:06,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-04 09:33:06,772 INFO L276 IsEmpty]: Start isEmpty. Operand 1820 states and 2379 transitions. [2025-03-04 09:33:06,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2025-03-04 09:33:06,773 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:33:06,773 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, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:33:06,784 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-03-04 09:33:06,973 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 [2025-03-04 09:33:06,974 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting alt_bzeroErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 622 more)] === [2025-03-04 09:33:06,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:33:06,975 INFO L85 PathProgramCache]: Analyzing trace with hash 748250089, now seen corresponding path program 1 times [2025-03-04 09:33:06,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:33:06,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1942497579] [2025-03-04 09:33:06,975 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:33:06,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:33:06,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:33:06,977 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) [2025-03-04 09:33:06,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-03-04 09:33:07,115 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 80 statements into 1 equivalence classes. [2025-03-04 09:33:07,184 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 80 of 80 statements. [2025-03-04 09:33:07,184 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:33:07,184 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:33:07,194 INFO L256 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-03-04 09:33:07,196 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:33:07,212 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-04 09:33:07,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-04 09:33:07,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-03-04 09:33:07,314 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2025-03-04 09:33:07,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:33:07,408 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:33:07,408 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:33:07,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942497579] [2025-03-04 09:33:07,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942497579] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:33:07,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:33:07,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-04 09:33:07,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673564972] [2025-03-04 09:33:07,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:33:07,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-04 09:33:07,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:33:07,409 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-04 09:33:07,409 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-04 09:33:07,409 INFO L87 Difference]: Start difference. First operand 1820 states and 2379 transitions. Second operand has 9 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-04 09:33:10,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:33:10,865 INFO L93 Difference]: Finished difference Result 1820 states and 2377 transitions. [2025-03-04 09:33:10,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-04 09:33:10,866 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 80 [2025-03-04 09:33:10,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:33:10,868 INFO L225 Difference]: With dead ends: 1820 [2025-03-04 09:33:10,868 INFO L226 Difference]: Without dead ends: 1820 [2025-03-04 09:33:10,868 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2025-03-04 09:33:10,868 INFO L435 NwaCegarLoop]: 1101 mSDtfsCounter, 13 mSDsluCounter, 4566 mSDsCounter, 0 mSdLazyCounter, 3234 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 5667 SdHoareTripleChecker+Invalid, 3235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2025-03-04 09:33:10,869 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 5667 Invalid, 3235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3234 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2025-03-04 09:33:10,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1820 states. [2025-03-04 09:33:10,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1820 to 1820. [2025-03-04 09:33:10,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1820 states, 1316 states have (on average 1.7530395136778116) internal successors, (2307), 1780 states have internal predecessors, (2307), 37 states have call successors, (37), 13 states have call predecessors, (37), 10 states have return successors, (33), 28 states have call predecessors, (33), 33 states have call successors, (33) [2025-03-04 09:33:10,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1820 states to 1820 states and 2377 transitions. [2025-03-04 09:33:10,884 INFO L78 Accepts]: Start accepts. Automaton has 1820 states and 2377 transitions. Word has length 80 [2025-03-04 09:33:10,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:33:10,884 INFO L471 AbstractCegarLoop]: Abstraction has 1820 states and 2377 transitions. [2025-03-04 09:33:10,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-04 09:33:10,884 INFO L276 IsEmpty]: Start isEmpty. Operand 1820 states and 2377 transitions. [2025-03-04 09:33:10,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2025-03-04 09:33:10,885 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:33:10,885 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:33:10,896 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-03-04 09:33:11,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:33:11,085 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr509REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 622 more)] === [2025-03-04 09:33:11,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:33:11,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1762812187, now seen corresponding path program 1 times [2025-03-04 09:33:11,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:33:11,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1831244272] [2025-03-04 09:33:11,086 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:33:11,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:33:11,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:33:11,088 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:33:11,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-03-04 09:33:11,234 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 87 statements into 1 equivalence classes. [2025-03-04 09:33:11,299 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 87 of 87 statements. [2025-03-04 09:33:11,299 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:33:11,299 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:33:11,309 INFO L256 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-04 09:33:11,311 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:33:11,314 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-04 09:33:11,381 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-03-04 09:33:11,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:33:11,390 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:33:11,390 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:33:11,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831244272] [2025-03-04 09:33:11,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831244272] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:33:11,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:33:11,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-04 09:33:11,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253274395] [2025-03-04 09:33:11,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:33:11,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-04 09:33:11,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:33:11,391 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-04 09:33:11,391 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-04 09:33:11,391 INFO L87 Difference]: Start difference. First operand 1820 states and 2377 transitions. Second operand has 8 states, 6 states have (on average 13.5) internal successors, (81), 7 states have internal predecessors, (81), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-04 09:33:14,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:33:14,006 INFO L93 Difference]: Finished difference Result 1851 states and 2417 transitions. [2025-03-04 09:33:14,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-04 09:33:14,009 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 13.5) internal successors, (81), 7 states have internal predecessors, (81), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 87 [2025-03-04 09:33:14,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:33:14,011 INFO L225 Difference]: With dead ends: 1851 [2025-03-04 09:33:14,011 INFO L226 Difference]: Without dead ends: 1851 [2025-03-04 09:33:14,011 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2025-03-04 09:33:14,012 INFO L435 NwaCegarLoop]: 1067 mSDtfsCounter, 43 mSDsluCounter, 4203 mSDsCounter, 0 mSdLazyCounter, 2474 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 5270 SdHoareTripleChecker+Invalid, 2491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2025-03-04 09:33:14,014 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 5270 Invalid, 2491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2474 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2025-03-04 09:33:14,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1851 states. [2025-03-04 09:33:14,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1851 to 1834. [2025-03-04 09:33:14,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1834 states, 1328 states have (on average 1.7492469879518073) internal successors, (2323), 1792 states have internal predecessors, (2323), 37 states have call successors, (37), 13 states have call predecessors, (37), 12 states have return successors, (35), 30 states have call predecessors, (35), 33 states have call successors, (35) [2025-03-04 09:33:14,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1834 states to 1834 states and 2395 transitions. [2025-03-04 09:33:14,028 INFO L78 Accepts]: Start accepts. Automaton has 1834 states and 2395 transitions. Word has length 87 [2025-03-04 09:33:14,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:33:14,029 INFO L471 AbstractCegarLoop]: Abstraction has 1834 states and 2395 transitions. [2025-03-04 09:33:14,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 13.5) internal successors, (81), 7 states have internal predecessors, (81), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-04 09:33:14,029 INFO L276 IsEmpty]: Start isEmpty. Operand 1834 states and 2395 transitions. [2025-03-04 09:33:14,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2025-03-04 09:33:14,029 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:33:14,029 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:33:14,040 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2025-03-04 09:33:14,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:33:14,230 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr510REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 622 more)] === [2025-03-04 09:33:14,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:33:14,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1762812188, now seen corresponding path program 1 times [2025-03-04 09:33:14,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:33:14,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1258150573] [2025-03-04 09:33:14,231 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:33:14,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:33:14,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:33:14,233 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:33:14,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-03-04 09:33:14,380 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 87 statements into 1 equivalence classes. [2025-03-04 09:33:14,451 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 87 of 87 statements. [2025-03-04 09:33:14,451 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:33:14,451 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:33:14,460 INFO L256 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-04 09:33:14,461 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:33:14,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:33:14,484 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:33:14,484 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:33:14,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258150573] [2025-03-04 09:33:14,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1258150573] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:33:14,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:33:14,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 09:33:14,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874688018] [2025-03-04 09:33:14,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:33:14,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 09:33:14,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:33:14,485 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 09:33:14,485 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:33:14,485 INFO L87 Difference]: Start difference. First operand 1834 states and 2395 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2025-03-04 09:33:14,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:33:14,520 INFO L93 Difference]: Finished difference Result 1836 states and 2395 transitions. [2025-03-04 09:33:14,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 09:33:14,521 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 87 [2025-03-04 09:33:14,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:33:14,525 INFO L225 Difference]: With dead ends: 1836 [2025-03-04 09:33:14,525 INFO L226 Difference]: Without dead ends: 1830 [2025-03-04 09:33:14,525 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:33:14,526 INFO L435 NwaCegarLoop]: 1110 mSDtfsCounter, 3 mSDsluCounter, 2211 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 3321 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 09:33:14,527 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 3321 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 09:33:14,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1830 states. [2025-03-04 09:33:14,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1830 to 1830. [2025-03-04 09:33:14,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1830 states, 1324 states have (on average 1.75) internal successors, (2317), 1790 states have internal predecessors, (2317), 37 states have call successors, (37), 13 states have call predecessors, (37), 12 states have return successors, (35), 28 states have call predecessors, (35), 33 states have call successors, (35) [2025-03-04 09:33:14,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1830 states to 1830 states and 2389 transitions. [2025-03-04 09:33:14,541 INFO L78 Accepts]: Start accepts. Automaton has 1830 states and 2389 transitions. Word has length 87 [2025-03-04 09:33:14,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:33:14,542 INFO L471 AbstractCegarLoop]: Abstraction has 1830 states and 2389 transitions. [2025-03-04 09:33:14,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2025-03-04 09:33:14,542 INFO L276 IsEmpty]: Start isEmpty. Operand 1830 states and 2389 transitions. [2025-03-04 09:33:14,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2025-03-04 09:33:14,542 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:33:14,542 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:33:14,554 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2025-03-04 09:33:14,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:33:14,743 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr509REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 622 more)] === [2025-03-04 09:33:14,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:33:14,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1611731403, now seen corresponding path program 1 times [2025-03-04 09:33:14,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:33:14,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [197159071] [2025-03-04 09:33:14,744 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:33:14,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:33:14,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:33:14,746 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:33:14,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-03-04 09:33:14,900 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-03-04 09:33:14,984 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-03-04 09:33:14,984 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:33:14,984 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:33:14,994 INFO L256 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-04 09:33:14,996 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:33:15,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:33:15,026 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:33:15,096 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:33:15,096 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:33:15,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197159071] [2025-03-04 09:33:15,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197159071] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 09:33:15,096 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 09:33:15,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2025-03-04 09:33:15,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906025671] [2025-03-04 09:33:15,096 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 09:33:15,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-04 09:33:15,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:33:15,097 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-04 09:33:15,097 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2025-03-04 09:33:15,097 INFO L87 Difference]: Start difference. First operand 1830 states and 2389 transitions. Second operand has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2025-03-04 09:33:15,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:33:15,216 INFO L93 Difference]: Finished difference Result 1856 states and 2419 transitions. [2025-03-04 09:33:15,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-04 09:33:15,217 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 88 [2025-03-04 09:33:15,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:33:15,219 INFO L225 Difference]: With dead ends: 1856 [2025-03-04 09:33:15,220 INFO L226 Difference]: Without dead ends: 1844 [2025-03-04 09:33:15,220 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=130, Unknown=0, NotChecked=0, Total=210 [2025-03-04 09:33:15,220 INFO L435 NwaCegarLoop]: 1110 mSDtfsCounter, 20 mSDsluCounter, 4418 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 5528 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 09:33:15,220 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 5528 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 09:33:15,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1844 states. [2025-03-04 09:33:15,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1844 to 1838. [2025-03-04 09:33:15,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1838 states, 1332 states have (on average 1.746996996996997) internal successors, (2327), 1798 states have internal predecessors, (2327), 37 states have call successors, (37), 13 states have call predecessors, (37), 12 states have return successors, (35), 28 states have call predecessors, (35), 33 states have call successors, (35) [2025-03-04 09:33:15,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1838 states to 1838 states and 2399 transitions. [2025-03-04 09:33:15,235 INFO L78 Accepts]: Start accepts. Automaton has 1838 states and 2399 transitions. Word has length 88 [2025-03-04 09:33:15,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:33:15,235 INFO L471 AbstractCegarLoop]: Abstraction has 1838 states and 2399 transitions. [2025-03-04 09:33:15,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2025-03-04 09:33:15,236 INFO L276 IsEmpty]: Start isEmpty. Operand 1838 states and 2399 transitions. [2025-03-04 09:33:15,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-04 09:33:15,236 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:33:15,236 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:33:15,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2025-03-04 09:33:15,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:33:15,437 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr509REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 622 more)] === [2025-03-04 09:33:15,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:33:15,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1953428197, now seen corresponding path program 2 times [2025-03-04 09:33:15,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:33:15,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [453029617] [2025-03-04 09:33:15,438 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 09:33:15,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:33:15,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:33:15,440 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:33:15,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-03-04 09:33:15,598 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 91 statements into 2 equivalence classes.