./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/memleaks_test4-2.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/ldv-memsafety/memleaks_test4-2.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 22dc13e3a229fecb317fd9f602c1cc7d4d730ee1501bd597861fd3e87e82c9e9 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 07:46:23,883 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 07:46:23,938 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-04 07:46:23,941 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 07:46:23,941 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 07:46:23,963 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 07:46:23,964 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 07:46:23,964 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 07:46:23,965 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 07:46:23,965 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 07:46:23,965 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 07:46:23,966 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 07:46:23,966 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 07:46:23,966 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 07:46:23,966 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 07:46:23,966 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 07:46:23,967 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 07:46:23,967 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 07:46:23,967 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 07:46:23,967 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 07:46:23,967 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-04 07:46:23,967 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-04 07:46:23,967 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-04 07:46:23,967 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 07:46:23,967 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-04 07:46:23,967 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 07:46:23,967 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 07:46:23,967 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 07:46:23,967 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 07:46:23,968 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 07:46:23,968 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 07:46:23,968 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 07:46:23,968 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 07:46:23,968 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 07:46:23,968 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 07:46:23,968 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 07:46:23,968 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 07:46:23,968 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 07:46:23,968 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 07:46:23,969 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 07:46:23,969 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 07:46:23,969 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 07:46:23,969 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 -> 22dc13e3a229fecb317fd9f602c1cc7d4d730ee1501bd597861fd3e87e82c9e9 [2025-03-04 07:46:24,175 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 07:46:24,180 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 07:46:24,184 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 07:46:24,185 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 07:46:24,185 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 07:46:24,186 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test4-2.i [2025-03-04 07:46:25,334 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa322c808/f0e4fb680d7e492f90adf5700ce52469/FLAG24c7f2c9d [2025-03-04 07:46:25,587 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 07:46:25,588 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test4-2.i [2025-03-04 07:46:25,600 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa322c808/f0e4fb680d7e492f90adf5700ce52469/FLAG24c7f2c9d [2025-03-04 07:46:25,610 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa322c808/f0e4fb680d7e492f90adf5700ce52469 [2025-03-04 07:46:25,612 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 07:46:25,613 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 07:46:25,614 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 07:46:25,614 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 07:46:25,616 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 07:46:25,617 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 07:46:25" (1/1) ... [2025-03-04 07:46:25,618 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66add3dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 07:46:25, skipping insertion in model container [2025-03-04 07:46:25,618 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 07:46:25" (1/1) ... [2025-03-04 07:46:25,643 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 07:46:25,864 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 07:46:25,915 WARN 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 07:46:25,916 WARN 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 07:46:25,917 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 07:46:25,931 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 07:46:25,931 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@70f96bbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 07:46:25, skipping insertion in model container [2025-03-04 07:46:25,932 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 07:46:25,932 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-03-04 07:46:25,933 INFO L158 Benchmark]: Toolchain (without parser) took 319.96ms. Allocated memory is still 142.6MB. Free memory was 104.1MB in the beginning and 90.2MB in the end (delta: 13.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-04 07:46:25,934 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 201.3MB. Free memory is still 126.9MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 07:46:25,934 INFO L158 Benchmark]: CACSL2BoogieTranslator took 318.45ms. Allocated memory is still 142.6MB. Free memory was 104.1MB in the beginning and 90.2MB in the end (delta: 13.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-04 07:46:25,937 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 201.3MB. Free memory is still 126.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 318.45ms. Allocated memory is still 142.6MB. Free memory was 104.1MB in the beginning and 90.2MB in the end (delta: 13.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 607]: 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/ldv-memsafety/memleaks_test4-2.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 22dc13e3a229fecb317fd9f602c1cc7d4d730ee1501bd597861fd3e87e82c9e9 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 07:46:27,521 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 07:46:27,590 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-03-04 07:46:27,597 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 07:46:27,598 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 07:46:27,616 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 07:46:27,617 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 07:46:27,617 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 07:46:27,618 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 07:46:27,618 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 07:46:27,618 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 07:46:27,618 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 07:46:27,619 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 07:46:27,619 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 07:46:27,619 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 07:46:27,619 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 07:46:27,619 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 07:46:27,620 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 07:46:27,620 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 07:46:27,620 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 07:46:27,620 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-04 07:46:27,620 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-04 07:46:27,620 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-04 07:46:27,620 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 07:46:27,620 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-04 07:46:27,621 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-04 07:46:27,621 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-04 07:46:27,621 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 07:46:27,621 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 07:46:27,621 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 07:46:27,621 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 07:46:27,621 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 07:46:27,621 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 07:46:27,621 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 07:46:27,621 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 07:46:27,621 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 07:46:27,622 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 07:46:27,622 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 07:46:27,622 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-04 07:46:27,622 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-04 07:46:27,622 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 07:46:27,622 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 07:46:27,622 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 07:46:27,623 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 07:46:27,623 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 -> 22dc13e3a229fecb317fd9f602c1cc7d4d730ee1501bd597861fd3e87e82c9e9 [2025-03-04 07:46:27,844 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 07:46:27,849 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 07:46:27,851 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 07:46:27,852 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 07:46:27,852 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 07:46:27,853 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test4-2.i [2025-03-04 07:46:28,995 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4003a0f8/92ca79f011e8424791fd4b9436ee34f0/FLAGe581563ce [2025-03-04 07:46:29,220 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 07:46:29,221 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test4-2.i [2025-03-04 07:46:29,234 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4003a0f8/92ca79f011e8424791fd4b9436ee34f0/FLAGe581563ce [2025-03-04 07:46:29,246 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4003a0f8/92ca79f011e8424791fd4b9436ee34f0 [2025-03-04 07:46:29,248 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 07:46:29,250 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 07:46:29,251 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 07:46:29,251 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 07:46:29,254 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 07:46:29,255 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 07:46:29" (1/1) ... [2025-03-04 07:46:29,255 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fee9af4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 07:46:29, skipping insertion in model container [2025-03-04 07:46:29,257 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 07:46:29" (1/1) ... [2025-03-04 07:46:29,286 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 07:46:29,489 WARN 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 07:46:29,517 WARN 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 07:46:29,518 WARN 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 07:46:29,518 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 07:46:29,533 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-03-04 07:46:29,541 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 07:46:29,570 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 07:46:29,588 WARN 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 07:46:29,589 WARN 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 07:46:29,589 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 07:46:29,593 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 07:46:29,642 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 07:46:29,678 INFO L204 MainTranslator]: Completed translation [2025-03-04 07:46:29,678 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 07:46:29 WrapperNode [2025-03-04 07:46:29,678 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 07:46:29,680 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 07:46:29,680 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 07:46:29,680 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 07:46:29,684 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 07:46:29" (1/1) ... [2025-03-04 07:46:29,706 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 07:46:29" (1/1) ... [2025-03-04 07:46:29,721 INFO L138 Inliner]: procedures = 165, calls = 71, calls flagged for inlining = 21, calls inlined = 3, statements flattened = 26 [2025-03-04 07:46:29,722 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 07:46:29,722 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 07:46:29,722 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 07:46:29,723 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 07:46:29,729 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 07:46:29" (1/1) ... [2025-03-04 07:46:29,729 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 07:46:29" (1/1) ... [2025-03-04 07:46:29,730 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 07:46:29" (1/1) ... [2025-03-04 07:46:29,742 INFO L175 MemorySlicer]: Split 2 memory accesses to 2 slices as follows [2, 0]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 0 writes are split as follows [0, 0]. [2025-03-04 07:46:29,742 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 07:46:29" (1/1) ... [2025-03-04 07:46:29,742 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 07:46:29" (1/1) ... [2025-03-04 07:46:29,751 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 07:46:29" (1/1) ... [2025-03-04 07:46:29,752 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 07:46:29" (1/1) ... [2025-03-04 07:46:29,755 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 07:46:29" (1/1) ... [2025-03-04 07:46:29,756 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 07:46:29" (1/1) ... [2025-03-04 07:46:29,757 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 07:46:29,759 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 07:46:29,759 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 07:46:29,759 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 07:46:29,760 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 07:46:29" (1/1) ... [2025-03-04 07:46:29,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 07:46:29,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 07:46:29,784 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 07:46:29,786 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 07:46:29,803 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2025-03-04 07:46:29,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2025-03-04 07:46:29,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-04 07:46:29,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 07:46:29,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-04 07:46:29,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-03-04 07:46:29,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-03-04 07:46:29,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 07:46:29,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 07:46:29,879 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 07:46:29,881 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 07:46:29,910 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L527: havoc #t~malloc12.base, #t~malloc12.offset; [2025-03-04 07:46:29,963 INFO L? ?]: Removed 15 outVars from TransFormulas that were not future-live. [2025-03-04 07:46:29,965 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 07:46:29,973 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 07:46:29,973 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 07:46:29,974 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 07:46:29 BoogieIcfgContainer [2025-03-04 07:46:29,974 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 07:46:29,976 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 07:46:29,976 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 07:46:29,980 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 07:46:29,980 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 07:46:29" (1/3) ... [2025-03-04 07:46:29,981 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b11c182 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 07:46:29, skipping insertion in model container [2025-03-04 07:46:29,981 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 07:46:29" (2/3) ... [2025-03-04 07:46:29,981 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b11c182 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 07:46:29, skipping insertion in model container [2025-03-04 07:46:29,981 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 07:46:29" (3/3) ... [2025-03-04 07:46:29,982 INFO L128 eAbstractionObserver]: Analyzing ICFG memleaks_test4-2.i [2025-03-04 07:46:29,991 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 07:46:29,991 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG memleaks_test4-2.i that has 2 procedures, 28 locations, 1 initial locations, 0 loop locations, and 7 error locations. [2025-03-04 07:46:30,026 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 07:46:30,035 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;@221616a7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 07:46:30,035 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2025-03-04 07:46:30,038 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 24 states have internal predecessors, (26), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-04 07:46:30,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-03-04 07:46:30,042 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 07:46:30,042 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 07:46:30,042 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2025-03-04 07:46:30,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 07:46:30,045 INFO L85 PathProgramCache]: Analyzing trace with hash -189087081, now seen corresponding path program 1 times [2025-03-04 07:46:30,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 07:46:30,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [689128859] [2025-03-04 07:46:30,051 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 07:46:30,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:46:30,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 07:46:30,054 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 07:46:30,056 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 07:46:30,121 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-04 07:46:30,136 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-04 07:46:30,136 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 07:46:30,136 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 07:46:30,139 INFO L256 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 07:46:30,142 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 07:46:30,207 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 07:46:30,207 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 07:46:30,208 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 07:46:30,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689128859] [2025-03-04 07:46:30,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689128859] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 07:46:30,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 07:46:30,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 07:46:30,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051040920] [2025-03-04 07:46:30,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 07:46:30,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 07:46:30,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 07:46:30,231 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 07:46:30,232 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 07:46:30,233 INFO L87 Difference]: Start difference. First operand has 28 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 24 states have internal predecessors, (26), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 07:46:30,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 07:46:30,283 INFO L93 Difference]: Finished difference Result 44 states and 51 transitions. [2025-03-04 07:46:30,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 07:46:30,285 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2025-03-04 07:46:30,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 07:46:30,290 INFO L225 Difference]: With dead ends: 44 [2025-03-04 07:46:30,290 INFO L226 Difference]: Without dead ends: 42 [2025-03-04 07:46:30,291 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 07:46:30,293 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 11 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 07:46:30,293 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 131 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 07:46:30,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2025-03-04 07:46:30,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 30. [2025-03-04 07:46:30,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 25 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2025-03-04 07:46:30,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2025-03-04 07:46:30,316 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 11 [2025-03-04 07:46:30,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 07:46:30,316 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2025-03-04 07:46:30,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 07:46:30,316 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2025-03-04 07:46:30,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-03-04 07:46:30,316 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 07:46:30,317 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 07:46:30,323 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 07:46:30,521 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 07:46:30,521 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2025-03-04 07:46:30,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 07:46:30,522 INFO L85 PathProgramCache]: Analyzing trace with hash 698416600, now seen corresponding path program 1 times [2025-03-04 07:46:30,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 07:46:30,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [436009644] [2025-03-04 07:46:30,522 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 07:46:30,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:46:30,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 07:46:30,524 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 07:46:30,525 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 07:46:30,570 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-04 07:46:30,576 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-04 07:46:30,576 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 07:46:30,576 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 07:46:30,577 INFO L256 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 07:46:30,578 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 07:46:30,606 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 07:46:30,606 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 07:46:30,606 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 07:46:30,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436009644] [2025-03-04 07:46:30,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436009644] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 07:46:30,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 07:46:30,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 07:46:30,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077209752] [2025-03-04 07:46:30,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 07:46:30,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 07:46:30,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 07:46:30,608 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 07:46:30,608 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 07:46:30,608 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 07:46:30,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 07:46:30,653 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2025-03-04 07:46:30,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 07:46:30,654 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2025-03-04 07:46:30,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 07:46:30,654 INFO L225 Difference]: With dead ends: 40 [2025-03-04 07:46:30,654 INFO L226 Difference]: Without dead ends: 38 [2025-03-04 07:46:30,655 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 07:46:30,655 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 7 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 07:46:30,656 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 80 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 07:46:30,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2025-03-04 07:46:30,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 26. [2025-03-04 07:46:30,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 16 states have (on average 1.4375) internal successors, (23), 22 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-04 07:46:30,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2025-03-04 07:46:30,659 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 11 [2025-03-04 07:46:30,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 07:46:30,659 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2025-03-04 07:46:30,659 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 07:46:30,659 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2025-03-04 07:46:30,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-03-04 07:46:30,659 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 07:46:30,659 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 07:46:30,667 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 07:46:30,860 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 07:46:30,860 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2025-03-04 07:46:30,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 07:46:30,861 INFO L85 PathProgramCache]: Analyzing trace with hash 473170109, now seen corresponding path program 1 times [2025-03-04 07:46:30,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 07:46:30,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [983776929] [2025-03-04 07:46:30,861 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 07:46:30,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:46:30,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 07:46:30,865 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 07:46:30,867 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 07:46:30,901 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-04 07:46:30,908 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-04 07:46:30,908 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 07:46:30,908 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 07:46:30,909 INFO L256 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 07:46:30,910 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 07:46:30,939 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-04 07:46:30,939 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 07:46:30,939 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 07:46:30,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983776929] [2025-03-04 07:46:30,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [983776929] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 07:46:30,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 07:46:30,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 07:46:30,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922408520] [2025-03-04 07:46:30,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 07:46:30,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 07:46:30,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 07:46:30,941 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 07:46:30,941 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 07:46:30,941 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-04 07:46:30,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 07:46:30,961 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2025-03-04 07:46:30,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 07:46:30,961 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2025-03-04 07:46:30,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 07:46:30,962 INFO L225 Difference]: With dead ends: 25 [2025-03-04 07:46:30,963 INFO L226 Difference]: Without dead ends: 25 [2025-03-04 07:46:30,963 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 07:46:30,963 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 07:46:30,964 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 87 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 07:46:30,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2025-03-04 07:46:30,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2025-03-04 07:46:30,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.375) internal successors, (22), 21 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-04 07:46:30,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2025-03-04 07:46:30,968 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 16 [2025-03-04 07:46:30,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 07:46:30,968 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2025-03-04 07:46:30,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-04 07:46:30,969 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2025-03-04 07:46:30,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-03-04 07:46:30,969 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 07:46:30,969 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 07:46:30,975 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 07:46:31,169 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 07:46:31,170 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2025-03-04 07:46:31,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 07:46:31,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1783371477, now seen corresponding path program 1 times [2025-03-04 07:46:31,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 07:46:31,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [394799659] [2025-03-04 07:46:31,171 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 07:46:31,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:46:31,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 07:46:31,173 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 07:46:31,174 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 07:46:31,219 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-04 07:46:31,230 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-04 07:46:31,230 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 07:46:31,230 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 07:46:31,231 INFO L256 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 07:46:31,233 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 07:46:31,260 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-04 07:46:31,260 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 07:46:31,261 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 07:46:31,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394799659] [2025-03-04 07:46:31,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [394799659] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 07:46:31,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 07:46:31,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 07:46:31,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640858602] [2025-03-04 07:46:31,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 07:46:31,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 07:46:31,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 07:46:31,261 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 07:46:31,261 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 07:46:31,262 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-04 07:46:31,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 07:46:31,320 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2025-03-04 07:46:31,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 07:46:31,320 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2025-03-04 07:46:31,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 07:46:31,321 INFO L225 Difference]: With dead ends: 30 [2025-03-04 07:46:31,321 INFO L226 Difference]: Without dead ends: 30 [2025-03-04 07:46:31,321 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 07:46:31,321 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 1 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 07:46:31,321 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 62 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 07:46:31,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2025-03-04 07:46:31,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2025-03-04 07:46:31,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 20 states have (on average 1.3) internal successors, (26), 25 states have internal predecessors, (26), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2025-03-04 07:46:31,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2025-03-04 07:46:31,326 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 17 [2025-03-04 07:46:31,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 07:46:31,326 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2025-03-04 07:46:31,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-04 07:46:31,327 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2025-03-04 07:46:31,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-03-04 07:46:31,327 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 07:46:31,328 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 07:46:31,334 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 07:46:31,528 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 07:46:31,528 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2025-03-04 07:46:31,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 07:46:31,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1812000628, now seen corresponding path program 1 times [2025-03-04 07:46:31,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 07:46:31,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [694842480] [2025-03-04 07:46:31,529 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 07:46:31,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:46:31,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 07:46:31,531 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 07:46:31,531 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 07:46:31,562 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-04 07:46:31,570 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-04 07:46:31,570 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 07:46:31,570 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 07:46:31,571 INFO L256 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-04 07:46:31,571 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 07:46:31,640 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 07:46:31,641 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 07:46:31,641 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 07:46:31,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694842480] [2025-03-04 07:46:31,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [694842480] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 07:46:31,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 07:46:31,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 07:46:31,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409828130] [2025-03-04 07:46:31,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 07:46:31,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 07:46:31,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 07:46:31,642 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 07:46:31,642 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-03-04 07:46:31,642 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 07:46:31,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 07:46:31,707 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2025-03-04 07:46:31,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 07:46:31,708 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 17 [2025-03-04 07:46:31,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 07:46:31,708 INFO L225 Difference]: With dead ends: 30 [2025-03-04 07:46:31,708 INFO L226 Difference]: Without dead ends: 30 [2025-03-04 07:46:31,708 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-03-04 07:46:31,709 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 17 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 07:46:31,709 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 67 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 07:46:31,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2025-03-04 07:46:31,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2025-03-04 07:46:31,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 25 states have internal predecessors, (26), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2025-03-04 07:46:31,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2025-03-04 07:46:31,711 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 17 [2025-03-04 07:46:31,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 07:46:31,712 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2025-03-04 07:46:31,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 07:46:31,712 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2025-03-04 07:46:31,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-03-04 07:46:31,712 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 07:46:31,712 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 07:46:31,719 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 07:46:31,912 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 07:46:31,913 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2025-03-04 07:46:31,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 07:46:31,913 INFO L85 PathProgramCache]: Analyzing trace with hash -550059077, now seen corresponding path program 1 times [2025-03-04 07:46:31,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 07:46:31,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1193656428] [2025-03-04 07:46:31,914 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 07:46:31,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:46:31,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 07:46:31,916 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 07:46:31,916 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 07:46:31,944 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-04 07:46:31,951 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-04 07:46:31,951 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 07:46:31,951 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 07:46:31,952 INFO L256 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-04 07:46:31,953 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 07:46:31,969 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 07:46:31,999 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-04 07:46:31,999 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 07:46:31,999 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 07:46:31,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193656428] [2025-03-04 07:46:31,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1193656428] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 07:46:31,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 07:46:31,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 07:46:31,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218106105] [2025-03-04 07:46:31,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 07:46:31,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 07:46:31,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 07:46:31,999 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 07:46:31,999 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 07:46:32,000 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-04 07:46:32,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 07:46:32,035 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2025-03-04 07:46:32,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 07:46:32,036 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2025-03-04 07:46:32,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 07:46:32,036 INFO L225 Difference]: With dead ends: 29 [2025-03-04 07:46:32,036 INFO L226 Difference]: Without dead ends: 29 [2025-03-04 07:46:32,036 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 07:46:32,037 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 07:46:32,037 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 58 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 07:46:32,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2025-03-04 07:46:32,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 23. [2025-03-04 07:46:32,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.25) internal successors, (20), 19 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-04 07:46:32,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2025-03-04 07:46:32,039 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 18 [2025-03-04 07:46:32,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 07:46:32,040 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2025-03-04 07:46:32,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-04 07:46:32,040 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2025-03-04 07:46:32,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-03-04 07:46:32,040 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 07:46:32,040 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 07:46:32,046 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 07:46:32,241 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 07:46:32,241 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2025-03-04 07:46:32,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 07:46:32,241 INFO L85 PathProgramCache]: Analyzing trace with hash 128037779, now seen corresponding path program 1 times [2025-03-04 07:46:32,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 07:46:32,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [504224063] [2025-03-04 07:46:32,242 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 07:46:32,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:46:32,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 07:46:32,244 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 07:46:32,245 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 07:46:32,284 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-04 07:46:32,290 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-04 07:46:32,291 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 07:46:32,291 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 07:46:32,291 INFO L256 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 07:46:32,294 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 07:46:32,334 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-04 07:46:32,334 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 07:46:32,366 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-04 07:46:32,366 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 07:46:32,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504224063] [2025-03-04 07:46:32,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [504224063] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 07:46:32,366 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 07:46:32,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2025-03-04 07:46:32,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005238189] [2025-03-04 07:46:32,367 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 07:46:32,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 07:46:32,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 07:46:32,368 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 07:46:32,368 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 07:46:32,368 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (2), 1 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 07:46:32,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 07:46:32,384 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2025-03-04 07:46:32,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 07:46:32,384 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (2), 1 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 19 [2025-03-04 07:46:32,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 07:46:32,385 INFO L225 Difference]: With dead ends: 22 [2025-03-04 07:46:32,385 INFO L226 Difference]: Without dead ends: 22 [2025-03-04 07:46:32,385 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 07:46:32,385 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 07:46:32,385 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 67 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 07:46:32,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2025-03-04 07:46:32,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2025-03-04 07:46:32,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-04 07:46:32,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2025-03-04 07:46:32,387 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 19 [2025-03-04 07:46:32,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 07:46:32,387 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2025-03-04 07:46:32,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (2), 1 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 07:46:32,388 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2025-03-04 07:46:32,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-03-04 07:46:32,389 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 07:46:32,389 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 07:46:32,395 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 07:46:32,593 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 07:46:32,593 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2025-03-04 07:46:32,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 07:46:32,593 INFO L85 PathProgramCache]: Analyzing trace with hash -325796167, now seen corresponding path program 1 times [2025-03-04 07:46:32,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 07:46:32,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1323402293] [2025-03-04 07:46:32,594 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 07:46:32,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:46:32,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 07:46:32,595 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 07:46:32,596 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 07:46:32,624 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-04 07:46:32,634 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-04 07:46:32,634 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 07:46:32,634 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 07:46:32,635 INFO L256 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 07:46:32,636 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 07:46:32,682 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 07:46:32,683 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 07:46:32,716 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-04 07:46:32,716 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 07:46:32,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323402293] [2025-03-04 07:46:32,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1323402293] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 07:46:32,716 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 07:46:32,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 5 [2025-03-04 07:46:32,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309483517] [2025-03-04 07:46:32,717 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 07:46:32,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 07:46:32,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 07:46:32,717 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 07:46:32,717 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-03-04 07:46:32,717 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-04 07:46:32,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 07:46:32,765 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2025-03-04 07:46:32,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 07:46:32,766 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 20 [2025-03-04 07:46:32,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 07:46:32,766 INFO L225 Difference]: With dead ends: 21 [2025-03-04 07:46:32,766 INFO L226 Difference]: Without dead ends: 21 [2025-03-04 07:46:32,766 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-03-04 07:46:32,766 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 9 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 07:46:32,766 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 34 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 07:46:32,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2025-03-04 07:46:32,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2025-03-04 07:46:32,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.125) internal successors, (18), 17 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-04 07:46:32,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2025-03-04 07:46:32,768 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 20 [2025-03-04 07:46:32,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 07:46:32,769 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2025-03-04 07:46:32,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-04 07:46:32,769 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2025-03-04 07:46:32,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-03-04 07:46:32,769 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 07:46:32,769 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 07:46:32,775 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-04 07:46:32,969 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 07:46:32,970 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2025-03-04 07:46:32,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 07:46:32,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1509746607, now seen corresponding path program 1 times [2025-03-04 07:46:32,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 07:46:32,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [197793594] [2025-03-04 07:46:32,970 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 07:46:32,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:46:32,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 07:46:32,972 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 07:46:32,973 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 07:46:33,008 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-04 07:46:33,016 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-04 07:46:33,017 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 07:46:33,017 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 07:46:33,019 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-04 07:46:33,021 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 07:46:33,025 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 07:46:33,100 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2025-03-04 07:46:33,100 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 07:46:33,168 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 16 treesize of output 13 [2025-03-04 07:46:33,178 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 07:46:33,178 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 07:46:33,424 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 07:46:33,425 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 07:46:33,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197793594] [2025-03-04 07:46:33,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197793594] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 07:46:33,425 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 07:46:33,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2025-03-04 07:46:33,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479826092] [2025-03-04 07:46:33,425 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 07:46:33,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-04 07:46:33,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 07:46:33,426 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-04 07:46:33,426 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2025-03-04 07:46:33,426 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 11 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-04 07:46:33,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 07:46:33,524 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2025-03-04 07:46:33,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-04 07:46:33,525 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2025-03-04 07:46:33,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 07:46:33,525 INFO L225 Difference]: With dead ends: 37 [2025-03-04 07:46:33,525 INFO L226 Difference]: Without dead ends: 37 [2025-03-04 07:46:33,526 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2025-03-04 07:46:33,526 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 5 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 07:46:33,526 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 53 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 07:46:33,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2025-03-04 07:46:33,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 33. [2025-03-04 07:46:33,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 26 states have (on average 1.0769230769230769) internal successors, (28), 27 states have internal predecessors, (28), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2025-03-04 07:46:33,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2025-03-04 07:46:33,529 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 21 [2025-03-04 07:46:33,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 07:46:33,529 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2025-03-04 07:46:33,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-04 07:46:33,529 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2025-03-04 07:46:33,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-03-04 07:46:33,529 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 07:46:33,529 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 07:46:33,536 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-03-04 07:46:33,730 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 07:46:33,730 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2025-03-04 07:46:33,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 07:46:33,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1706260112, now seen corresponding path program 1 times [2025-03-04 07:46:33,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 07:46:33,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [428858857] [2025-03-04 07:46:33,731 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 07:46:33,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:46:33,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 07:46:33,732 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 07:46:33,733 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 07:46:33,761 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-04 07:46:33,767 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-04 07:46:33,767 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 07:46:33,767 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 07:46:33,768 INFO L256 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-04 07:46:33,769 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 07:46:33,773 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 07:46:33,879 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 16 treesize of output 13 [2025-03-04 07:46:33,887 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 07:46:33,887 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 07:46:34,092 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 07:46:34,092 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 07:46:34,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428858857] [2025-03-04 07:46:34,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [428858857] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 07:46:34,092 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 07:46:34,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 13 [2025-03-04 07:46:34,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399263246] [2025-03-04 07:46:34,092 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 07:46:34,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-04 07:46:34,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 07:46:34,093 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-04 07:46:34,093 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2025-03-04 07:46:34,093 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 14 states, 13 states have (on average 2.076923076923077) internal successors, (27), 11 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-04 07:46:34,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 07:46:34,258 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2025-03-04 07:46:34,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-04 07:46:34,258 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.076923076923077) internal successors, (27), 11 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2025-03-04 07:46:34,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 07:46:34,259 INFO L225 Difference]: With dead ends: 40 [2025-03-04 07:46:34,259 INFO L226 Difference]: Without dead ends: 40 [2025-03-04 07:46:34,259 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2025-03-04 07:46:34,259 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 3 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 07:46:34,259 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 57 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 07:46:34,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2025-03-04 07:46:34,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 33. [2025-03-04 07:46:34,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 26 states have (on average 1.0769230769230769) internal successors, (28), 27 states have internal predecessors, (28), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2025-03-04 07:46:34,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2025-03-04 07:46:34,265 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 21 [2025-03-04 07:46:34,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 07:46:34,265 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2025-03-04 07:46:34,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.076923076923077) internal successors, (27), 11 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-04 07:46:34,265 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2025-03-04 07:46:34,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-03-04 07:46:34,266 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 07:46:34,266 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 07:46:34,274 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 07:46:34,471 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 07:46:34,471 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2025-03-04 07:46:34,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 07:46:34,471 INFO L85 PathProgramCache]: Analyzing trace with hash -156436910, now seen corresponding path program 2 times [2025-03-04 07:46:34,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 07:46:34,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1383079628] [2025-03-04 07:46:34,472 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 07:46:34,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:46:34,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 07:46:34,473 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 07:46:34,474 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 07:46:34,503 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-03-04 07:46:34,511 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-03-04 07:46:34,511 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 07:46:34,511 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 07:46:34,511 INFO L256 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 07:46:34,512 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 07:46:34,534 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-04 07:46:34,534 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 07:46:34,554 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-04 07:46:34,554 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 07:46:34,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383079628] [2025-03-04 07:46:34,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1383079628] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 07:46:34,554 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 07:46:34,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2025-03-04 07:46:34,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913645892] [2025-03-04 07:46:34,554 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 07:46:34,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 07:46:34,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 07:46:34,555 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 07:46:34,555 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 07:46:34,555 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (2), 1 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 07:46:34,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 07:46:34,572 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2025-03-04 07:46:34,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 07:46:34,573 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (2), 1 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 21 [2025-03-04 07:46:34,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 07:46:34,573 INFO L225 Difference]: With dead ends: 32 [2025-03-04 07:46:34,573 INFO L226 Difference]: Without dead ends: 32 [2025-03-04 07:46:34,574 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 07:46:34,574 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 07:46:34,574 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 108 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 07:46:34,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2025-03-04 07:46:34,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 20. [2025-03-04 07:46:34,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 16 states have (on average 1.0625) internal successors, (17), 16 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-04 07:46:34,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2025-03-04 07:46:34,575 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 21 [2025-03-04 07:46:34,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 07:46:34,576 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2025-03-04 07:46:34,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (2), 1 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 07:46:34,576 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2025-03-04 07:46:34,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-03-04 07:46:34,576 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 07:46:34,576 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 07:46:34,583 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-03-04 07:46:34,781 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 07:46:34,781 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2025-03-04 07:46:34,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 07:46:34,782 INFO L85 PathProgramCache]: Analyzing trace with hash 832455983, now seen corresponding path program 1 times [2025-03-04 07:46:34,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 07:46:34,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [445733584] [2025-03-04 07:46:34,782 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 07:46:34,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:46:34,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 07:46:34,784 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 07:46:34,786 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 07:46:34,818 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-04 07:46:34,830 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-04 07:46:34,830 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 07:46:34,830 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 07:46:34,834 INFO L256 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-03-04 07:46:34,837 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 07:46:39,881 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-04 07:46:39,881 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 07:46:39,881 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 07:46:39,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445733584] [2025-03-04 07:46:39,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [445733584] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 07:46:39,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 07:46:39,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-04 07:46:39,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756393933] [2025-03-04 07:46:39,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 07:46:39,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-04 07:46:39,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 07:46:39,882 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-04 07:46:39,883 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=86, Unknown=3, NotChecked=0, Total=110 [2025-03-04 07:46:39,883 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 11 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-04 07:46:43,949 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-04 07:46:47,963 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-04 07:46:52,105 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-04 07:46:56,133 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-04 07:47:00,142 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-04 07:47:04,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-04 07:47:04,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 07:47:04,172 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2025-03-04 07:47:04,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-04 07:47:04,172 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2025-03-04 07:47:04,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 07:47:04,173 INFO L225 Difference]: With dead ends: 42 [2025-03-04 07:47:04,173 INFO L226 Difference]: Without dead ends: 33 [2025-03-04 07:47:04,173 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=21, Invalid=86, Unknown=3, NotChecked=0, Total=110 [2025-03-04 07:47:04,173 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 10 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 4 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.3s IncrementalHoareTripleChecker+Time [2025-03-04 07:47:04,173 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 110 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 201 Invalid, 6 Unknown, 0 Unchecked, 24.3s Time] [2025-03-04 07:47:04,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2025-03-04 07:47:04,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 25. [2025-03-04 07:47:04,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 20 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2025-03-04 07:47:04,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2025-03-04 07:47:04,175 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 23 [2025-03-04 07:47:04,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 07:47:04,176 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2025-03-04 07:47:04,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-04 07:47:04,177 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2025-03-04 07:47:04,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-03-04 07:47:04,178 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 07:47:04,178 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 07:47:04,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-03-04 07:47:04,378 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 07:47:04,378 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2025-03-04 07:47:04,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 07:47:04,379 INFO L85 PathProgramCache]: Analyzing trace with hash 961538702, now seen corresponding path program 1 times [2025-03-04 07:47:04,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 07:47:04,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1056711786] [2025-03-04 07:47:04,379 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 07:47:04,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:47:04,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 07:47:04,382 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 07:47:04,383 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 07:47:04,430 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-04 07:47:04,437 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-04 07:47:04,438 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 07:47:04,438 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 07:47:04,439 INFO L256 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-03-04 07:47:04,440 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 07:47:04,691 WARN L873 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_entry_point_~p~0#1.base_17| (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 1))) (and (= (store (store |c_ULTIMATE.start_main_old_#valid#1| (_ bv0 32) (_ bv0 1)) |v_ULTIMATE.start_entry_point_~p~0#1.base_17| (_ bv0 1)) |c_#valid|) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_entry_point_~p~0#1.base_17|)) (= (_ bv0 1) (bvadd v_DerPreprocessor_6 (select (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_entry_point_~p~0#1.base_17| v_DerPreprocessor_6) (_ bv0 32) (_ bv0 1)) |v_ULTIMATE.start_entry_point_~p~0#1.base_17|))))) (= (select |c_ULTIMATE.start_main_old_#valid#1| (_ bv0 32)) (_ bv0 1))) is different from true [2025-03-04 07:47:04,702 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-04 07:47:04,703 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 07:47:04,985 WARN L851 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_entry_point_#t~ret42#1.base_26| (_ BitVec 32))) (or (= (store (store |c_#valid| (_ bv0 32) (_ bv0 1)) |v_ULTIMATE.start_entry_point_#t~ret42#1.base_26| (_ bv0 1)) |c_ULTIMATE.start_main_old_#valid#1|) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_entry_point_#t~ret42#1.base_26|))))) is different from false [2025-03-04 07:47:04,987 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 07:47:04,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056711786] [2025-03-04 07:47:04,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056711786] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 07:47:04,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2135021544] [2025-03-04 07:47:04,987 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 07:47:04,987 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-03-04 07:47:04,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2025-03-04 07:47:04,990 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-03-04 07:47:04,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2025-03-04 07:47:05,038 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-04 07:47:05,064 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-04 07:47:05,064 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 07:47:05,064 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 07:47:05,066 INFO L256 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-03-04 07:47:05,067 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 07:47:05,204 WARN L873 $PredicateComparison]: unable to prove that (and (= (select |c_ULTIMATE.start_main_old_#valid#1| (_ bv0 32)) (_ bv0 1)) (exists ((v_DerPreprocessor_8 (_ BitVec 1)) (|v_ULTIMATE.start_entry_point_~p~0#1.base_20| (_ BitVec 32))) (and (= (_ bv0 1) (bvadd v_DerPreprocessor_8 (select (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_entry_point_~p~0#1.base_20| v_DerPreprocessor_8) (_ bv0 32) (_ bv0 1)) |v_ULTIMATE.start_entry_point_~p~0#1.base_20|))) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_entry_point_~p~0#1.base_20|) (_ bv0 1)) (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| (_ bv0 32) (_ bv0 1)) |v_ULTIMATE.start_entry_point_~p~0#1.base_20| (_ bv0 1)))))) is different from true [2025-03-04 07:47:05,216 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-04 07:47:05,216 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 07:47:05,336 WARN L851 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_entry_point_#t~ret42#1.base_30| (_ BitVec 32))) (or (= (store (store |c_#valid| (_ bv0 32) (_ bv0 1)) |v_ULTIMATE.start_entry_point_#t~ret42#1.base_30| (_ bv0 1)) |c_ULTIMATE.start_main_old_#valid#1|) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_entry_point_#t~ret42#1.base_30|))))) is different from false [2025-03-04 07:47:05,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2135021544] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 07:47:05,337 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 07:47:05,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2025-03-04 07:47:05,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547722046] [2025-03-04 07:47:05,337 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 07:47:05,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-04 07:47:05,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 07:47:05,338 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-04 07:47:05,339 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=326, Unknown=4, NotChecked=156, Total=552 [2025-03-04 07:47:05,339 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 14 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 2 states have call successors, (2), 1 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 07:47:05,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 07:47:05,766 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2025-03-04 07:47:05,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-04 07:47:05,766 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 2 states have call successors, (2), 1 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 23 [2025-03-04 07:47:05,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 07:47:05,767 INFO L225 Difference]: With dead ends: 41 [2025-03-04 07:47:05,767 INFO L226 Difference]: Without dead ends: 22 [2025-03-04 07:47:05,767 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=152, Invalid=730, Unknown=4, NotChecked=236, Total=1122 [2025-03-04 07:47:05,767 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 22 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 80 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-04 07:47:05,768 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 103 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 205 Invalid, 0 Unknown, 80 Unchecked, 0.2s Time] [2025-03-04 07:47:05,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2025-03-04 07:47:05,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2025-03-04 07:47:05,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 18 states have internal predecessors, (18), 2 states have call successors, (2), 1 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 07:47:05,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2025-03-04 07:47:05,769 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 23 [2025-03-04 07:47:05,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 07:47:05,769 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2025-03-04 07:47:05,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 2 states have call successors, (2), 1 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 07:47:05,769 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2025-03-04 07:47:05,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-03-04 07:47:05,772 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 07:47:05,772 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 07:47:05,779 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 07:47:05,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2025-03-04 07:47:06,172 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,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2025-03-04 07:47:06,173 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2025-03-04 07:47:06,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 07:47:06,173 INFO L85 PathProgramCache]: Analyzing trace with hash -12015888, now seen corresponding path program 2 times [2025-03-04 07:47:06,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 07:47:06,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1975215997] [2025-03-04 07:47:06,173 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 07:47:06,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:47:06,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 07:47:06,175 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 07:47:06,176 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 07:47:06,211 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 23 statements into 2 equivalence classes. [2025-03-04 07:47:06,219 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-03-04 07:47:06,219 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 07:47:06,219 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 07:47:06,221 INFO L256 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-04 07:47:06,222 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 07:47:06,270 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-04 07:47:06,271 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 07:47:06,298 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-04 07:47:06,298 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 07:47:06,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975215997] [2025-03-04 07:47:06,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1975215997] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 07:47:06,300 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 07:47:06,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2025-03-04 07:47:06,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61130438] [2025-03-04 07:47:06,300 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 07:47:06,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 07:47:06,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 07:47:06,300 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 07:47:06,300 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-04 07:47:06,301 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (2), 1 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 07:47:06,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 07:47:06,320 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2025-03-04 07:47:06,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 07:47:06,320 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (2), 1 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 23 [2025-03-04 07:47:06,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 07:47:06,320 INFO L225 Difference]: With dead ends: 17 [2025-03-04 07:47:06,320 INFO L226 Difference]: Without dead ends: 0 [2025-03-04 07:47:06,321 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-04 07:47:06,321 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 5 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 07:47:06,321 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 58 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 07:47:06,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-03-04 07:47:06,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-03-04 07:47:06,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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 07:47:06,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-03-04 07:47:06,322 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2025-03-04 07:47:06,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 07:47:06,322 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-03-04 07:47:06,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (2), 1 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 07:47:06,322 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-03-04 07:47:06,322 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-03-04 07:47:06,325 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (6 of 7 remaining) [2025-03-04 07:47:06,325 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE (5 of 7 remaining) [2025-03-04 07:47:06,326 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (4 of 7 remaining) [2025-03-04 07:47:06,326 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE (3 of 7 remaining) [2025-03-04 07:47:06,326 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE (2 of 7 remaining) [2025-03-04 07:47:06,326 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE (1 of 7 remaining) [2025-03-04 07:47:06,326 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE (0 of 7 remaining) [2025-03-04 07:47:06,332 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 07:47:06,530 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 07:47:06,532 INFO L422 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 07:47:06,534 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-04 07:47:06,535 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.03 07:47:06 BoogieIcfgContainer [2025-03-04 07:47:06,535 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-04 07:47:06,536 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-04 07:47:06,536 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-04 07:47:06,536 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-04 07:47:06,536 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 07:46:29" (3/4) ... [2025-03-04 07:47:06,538 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-04 07:47:06,542 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure ldv_malloc [2025-03-04 07:47:06,544 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2025-03-04 07:47:06,544 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-03-04 07:47:06,544 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2025-03-04 07:47:06,596 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-04 07:47:06,597 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-04 07:47:06,597 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-04 07:47:06,598 INFO L158 Benchmark]: Toolchain (without parser) took 37347.45ms. Allocated memory is still 117.4MB. Free memory was 88.9MB in the beginning and 51.0MB in the end (delta: 37.9MB). Peak memory consumption was 39.3MB. Max. memory is 16.1GB. [2025-03-04 07:47:06,598 INFO L158 Benchmark]: CDTParser took 0.85ms. Allocated memory is still 83.9MB. Free memory is still 53.4MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 07:47:06,598 INFO L158 Benchmark]: CACSL2BoogieTranslator took 428.27ms. Allocated memory is still 117.4MB. Free memory was 88.6MB in the beginning and 61.8MB in the end (delta: 26.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-04 07:47:06,599 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.90ms. Allocated memory is still 117.4MB. Free memory was 61.8MB in the beginning and 60.0MB in the end (delta: 1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-04 07:47:06,599 INFO L158 Benchmark]: Boogie Preprocessor took 36.29ms. Allocated memory is still 117.4MB. Free memory was 60.0MB in the beginning and 58.3MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 07:47:06,599 INFO L158 Benchmark]: IcfgBuilder took 215.23ms. Allocated memory is still 117.4MB. Free memory was 58.3MB in the beginning and 46.3MB in the end (delta: 12.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-04 07:47:06,599 INFO L158 Benchmark]: TraceAbstraction took 36559.62ms. Allocated memory is still 117.4MB. Free memory was 45.7MB in the beginning and 57.0MB in the end (delta: -11.3MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 07:47:06,600 INFO L158 Benchmark]: Witness Printer took 61.04ms. Allocated memory is still 117.4MB. Free memory was 57.0MB in the beginning and 51.0MB in the end (delta: 6.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-04 07:47:06,602 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.85ms. Allocated memory is still 83.9MB. Free memory is still 53.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 428.27ms. Allocated memory is still 117.4MB. Free memory was 88.6MB in the beginning and 61.8MB in the end (delta: 26.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.90ms. Allocated memory is still 117.4MB. Free memory was 61.8MB in the beginning and 60.0MB in the end (delta: 1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.29ms. Allocated memory is still 117.4MB. Free memory was 60.0MB in the beginning and 58.3MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 215.23ms. Allocated memory is still 117.4MB. Free memory was 58.3MB in the beginning and 46.3MB in the end (delta: 12.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 36559.62ms. Allocated memory is still 117.4MB. Free memory was 45.7MB in the beginning and 57.0MB in the end (delta: -11.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 61.04ms. Allocated memory is still 117.4MB. Free memory was 57.0MB in the beginning and 51.0MB in the end (delta: 6.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 765]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 762]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 762]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 762]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 761]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 761]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 761]: free always succeeds For all program executions holds that free always succeeds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 28 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 36.5s, OverallIterations: 14, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 25.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 6 mSolverCounterUnknown, 92 SdHoareTripleChecker+Valid, 25.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 90 mSDsluCounter, 1075 SdHoareTripleChecker+Invalid, 24.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 80 IncrementalHoareTripleChecker+Unchecked, 755 mSDsCounter, 39 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 958 IncrementalHoareTripleChecker+Invalid, 1083 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 39 mSolverCounterUnsat, 320 mSDtfsCounter, 958 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 438 GetRequests, 334 SyntacticMatches, 5 SemanticMatches, 99 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 5.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=9, InterpolantAutomatonStates: 97, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 14 MinimizatonAttempts, 61 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 7.2s InterpolantComputationTime, 284 NumberOfCodeBlocks, 284 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 388 ConstructedInterpolants, 22 QuantifiedInterpolants, 2482 SizeOfPredicates, 3 NumberOfNonLiveVariables, 846 ConjunctsInSsa, 121 ConjunctsInUnsatCore, 21 InterpolantComputations, 7 PerfectInterpolantSequences, 48/76 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-03-04 07:47:06,625 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE