./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-races/race-2_4-container_of.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-races/race-2_4-container_of.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx --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 da1ee67f9d4a34134c6c682362ba77c4c77858b09ffe0620532fe4446dd160da --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:12:33,842 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:12:33,985 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-21 22:12:33,994 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:12:33,995 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:12:34,036 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:12:34,037 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:12:34,038 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:12:34,040 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:12:34,045 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:12:34,046 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:12:34,046 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:12:34,047 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:12:34,049 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:12:34,049 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:12:34,050 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:12:34,050 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:12:34,051 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:12:34,051 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 22:12:34,052 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 22:12:34,052 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 22:12:34,053 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:12:34,054 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 22:12:34,054 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:12:34,054 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:12:34,055 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:12:34,055 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:12:34,056 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:12:34,056 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:12:34,057 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:12:34,058 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:12:34,059 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:12:34,059 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:12:34,059 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:12:34,059 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:12:34,060 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:12:34,060 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:12:34,060 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:12:34,061 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:12:34,061 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da1ee67f9d4a34134c6c682362ba77c4c77858b09ffe0620532fe4446dd160da [2023-11-21 22:12:34,397 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:12:34,435 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:12:34,438 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:12:34,440 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:12:34,440 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:12:34,442 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/ldv-races/race-2_4-container_of.i [2023-11-21 22:12:37,562 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:12:37,944 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:12:37,945 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/sv-benchmarks/c/ldv-races/race-2_4-container_of.i [2023-11-21 22:12:37,985 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/data/8272afa2c/b845c88b029d4bcabad5a14b7e1567f6/FLAG79aed2a53 [2023-11-21 22:12:38,004 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/data/8272afa2c/b845c88b029d4bcabad5a14b7e1567f6 [2023-11-21 22:12:38,011 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:12:38,012 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:12:38,016 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:12:38,016 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:12:38,022 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:12:38,023 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:12:38" (1/1) ... [2023-11-21 22:12:38,024 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25db7cf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:12:38, skipping insertion in model container [2023-11-21 22:12:38,024 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:12:38" (1/1) ... [2023-11-21 22:12:38,112 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:12:38,331 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 22:12:38,964 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:12:38,978 ERROR L324 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) [2023-11-21 22:12:38,979 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@37bef00e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:12:38, skipping insertion in model container [2023-11-21 22:12:38,979 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:12:38,979 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-21 22:12:38,981 INFO L158 Benchmark]: Toolchain (without parser) took 968.10ms. Allocated memory is still 146.8MB. Free memory was 104.7MB in the beginning and 106.7MB in the end (delta: -2.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-21 22:12:38,982 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 121.6MB. Free memory is still 89.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:12:38,983 INFO L158 Benchmark]: CACSL2BoogieTranslator took 963.13ms. Allocated memory is still 146.8MB. Free memory was 104.1MB in the beginning and 106.7MB in the end (delta: -2.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-21 22:12:38,984 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 121.6MB. Free memory is still 89.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 963.13ms. Allocated memory is still 146.8MB. Free memory was 104.1MB in the beginning and 106.7MB in the end (delta: -2.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1691]: 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: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-races/race-2_4-container_of.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx --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 da1ee67f9d4a34134c6c682362ba77c4c77858b09ffe0620532fe4446dd160da --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:12:41,695 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:12:41,810 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-21 22:12:41,818 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:12:41,819 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:12:41,871 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:12:41,872 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:12:41,872 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:12:41,873 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:12:41,879 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:12:41,879 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:12:41,880 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:12:41,880 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:12:41,882 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:12:41,883 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:12:41,883 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:12:41,883 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:12:41,884 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:12:41,884 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 22:12:41,885 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 22:12:41,886 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 22:12:41,886 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:12:41,887 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 22:12:41,887 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-21 22:12:41,887 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-21 22:12:41,888 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:12:41,888 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:12:41,888 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:12:41,889 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:12:41,890 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:12:41,891 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:12:41,891 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:12:41,892 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:12:41,896 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:12:41,896 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:12:41,897 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-21 22:12:41,897 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-21 22:12:41,897 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:12:41,897 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:12:41,898 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:12:41,899 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:12:41,899 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-21 22:12:41,899 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da1ee67f9d4a34134c6c682362ba77c4c77858b09ffe0620532fe4446dd160da [2023-11-21 22:12:42,357 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:12:42,387 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:12:42,391 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:12:42,393 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:12:42,393 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:12:42,395 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/ldv-races/race-2_4-container_of.i [2023-11-21 22:12:45,546 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:12:46,064 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:12:46,065 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/sv-benchmarks/c/ldv-races/race-2_4-container_of.i [2023-11-21 22:12:46,102 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/data/bd4786b18/f282e65fa994443e9e1b55c3d53e1a5d/FLAG882025599 [2023-11-21 22:12:46,125 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/data/bd4786b18/f282e65fa994443e9e1b55c3d53e1a5d [2023-11-21 22:12:46,133 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:12:46,136 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:12:46,139 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:12:46,140 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:12:46,146 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:12:46,147 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:12:46" (1/1) ... [2023-11-21 22:12:46,148 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@602c3375 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:12:46, skipping insertion in model container [2023-11-21 22:12:46,149 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:12:46" (1/1) ... [2023-11-21 22:12:46,252 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:12:46,490 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 22:12:47,605 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:12:47,633 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-21 22:12:47,657 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:12:47,662 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 22:12:47,745 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:12:47,753 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:12:47,766 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 22:12:47,846 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:12:47,967 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:12:47,967 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:12:47,968 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:12:47,976 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:12:47,976 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:12:47 WrapperNode [2023-11-21 22:12:47,977 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:12:47,978 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:12:47,978 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:12:47,978 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:12:47,983 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:12:47" (1/1) ... [2023-11-21 22:12:48,030 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:12:47" (1/1) ... [2023-11-21 22:12:48,065 INFO L138 Inliner]: procedures = 474, calls = 65, calls flagged for inlining = 13, calls inlined = 18, statements flattened = 160 [2023-11-21 22:12:48,066 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:12:48,067 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:12:48,067 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:12:48,067 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:12:48,076 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:12:47" (1/1) ... [2023-11-21 22:12:48,076 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:12:47" (1/1) ... [2023-11-21 22:12:48,083 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:12:47" (1/1) ... [2023-11-21 22:12:48,084 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:12:47" (1/1) ... [2023-11-21 22:12:48,121 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:12:47" (1/1) ... [2023-11-21 22:12:48,124 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:12:47" (1/1) ... [2023-11-21 22:12:48,134 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:12:47" (1/1) ... [2023-11-21 22:12:48,137 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:12:47" (1/1) ... [2023-11-21 22:12:48,147 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:12:48,148 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:12:48,148 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:12:48,148 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:12:48,149 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:12:47" (1/1) ... [2023-11-21 22:12:48,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:12:48,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:12:48,195 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:12:48,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:12:48,234 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-21 22:12:48,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 22:12:48,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-21 22:12:48,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-11-21 22:12:48,234 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-21 22:12:48,234 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-21 22:12:48,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:12:48,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-21 22:12:48,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:12:48,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:12:48,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-21 22:12:48,235 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2023-11-21 22:12:48,235 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2023-11-21 22:12:48,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 22:12:48,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-21 22:12:48,236 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-21 22:12:48,237 WARN L212 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-21 22:12:48,688 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:12:48,690 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:12:49,468 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:12:49,804 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:12:49,805 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 22:12:49,806 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:12:49 BoogieIcfgContainer [2023-11-21 22:12:49,806 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:12:49,809 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:12:49,809 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:12:49,812 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:12:49,813 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:12:46" (1/3) ... [2023-11-21 22:12:49,813 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48c6dfd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:12:49, skipping insertion in model container [2023-11-21 22:12:49,813 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:12:47" (2/3) ... [2023-11-21 22:12:49,814 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48c6dfd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:12:49, skipping insertion in model container [2023-11-21 22:12:49,814 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:12:49" (3/3) ... [2023-11-21 22:12:49,815 INFO L112 eAbstractionObserver]: Analyzing ICFG race-2_4-container_of.i [2023-11-21 22:12:49,834 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:12:49,835 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 49 error locations. [2023-11-21 22:12:49,835 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-21 22:12:49,955 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-21 22:12:50,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 132 places, 136 transitions, 286 flow [2023-11-21 22:12:50,129 INFO L124 PetriNetUnfolderBase]: 14/186 cut-off events. [2023-11-21 22:12:50,130 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-21 22:12:50,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195 conditions, 186 events. 14/186 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 741 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 89. Up to 4 conditions per place. [2023-11-21 22:12:50,139 INFO L82 GeneralOperation]: Start removeDead. Operand has 132 places, 136 transitions, 286 flow [2023-11-21 22:12:50,151 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 130 places, 134 transitions, 280 flow [2023-11-21 22:12:50,171 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:12:50,181 INFO L357 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, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@7ee7f873, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:12:50,182 INFO L358 AbstractCegarLoop]: Starting to check reachability of 63 error locations. [2023-11-21 22:12:50,186 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:12:50,187 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-11-21 22:12:50,187 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:12:50,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:12:50,188 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-21 22:12:50,188 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK (and 60 more)] === [2023-11-21 22:12:50,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:12:50,194 INFO L85 PathProgramCache]: Analyzing trace with hash 566096, now seen corresponding path program 1 times [2023-11-21 22:12:50,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:12:50,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [335135205] [2023-11-21 22:12:50,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:12:50,220 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:12:50,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:12:50,227 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 22:12:50,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-21 22:12:50,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:12:50,414 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-21 22:12:50,420 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:12:50,529 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 [2023-11-21 22:12:50,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:12:50,546 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:12:50,546 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:12:50,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [335135205] [2023-11-21 22:12:50,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [335135205] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:12:50,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:12:50,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:12:50,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392547612] [2023-11-21 22:12:50,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:12:50,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:12:50,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:12:50,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:12:50,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:12:50,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 136 [2023-11-21 22:12:50,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 134 transitions, 280 flow. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 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) [2023-11-21 22:12:50,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:12:50,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 136 [2023-11-21 22:12:50,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:12:54,675 INFO L124 PetriNetUnfolderBase]: 9323/18951 cut-off events. [2023-11-21 22:12:54,676 INFO L125 PetriNetUnfolderBase]: For 60/60 co-relation queries the response was YES. [2023-11-21 22:12:54,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33511 conditions, 18951 events. 9323/18951 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 1103. Compared 190808 event pairs, 559 based on Foata normal form. 792/11748 useless extension candidates. Maximal degree in co-relation 33245. Up to 13528 conditions per place. [2023-11-21 22:12:54,865 INFO L140 encePairwiseOnDemand]: 124/136 looper letters, 94 selfloop transitions, 2 changer transitions 0/146 dead transitions. [2023-11-21 22:12:54,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 146 transitions, 496 flow [2023-11-21 22:12:54,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:12:54,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:12:54,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 262 transitions. [2023-11-21 22:12:54,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6421568627450981 [2023-11-21 22:12:54,883 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 262 transitions. [2023-11-21 22:12:54,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 262 transitions. [2023-11-21 22:12:54,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:12:54,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 262 transitions. [2023-11-21 22:12:54,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 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) [2023-11-21 22:12:54,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 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) [2023-11-21 22:12:54,899 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 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) [2023-11-21 22:12:54,901 INFO L175 Difference]: Start difference. First operand has 130 places, 134 transitions, 280 flow. Second operand 3 states and 262 transitions. [2023-11-21 22:12:54,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 146 transitions, 496 flow [2023-11-21 22:12:54,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 146 transitions, 488 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-21 22:12:54,915 INFO L231 Difference]: Finished difference. Result has 122 places, 120 transitions, 248 flow [2023-11-21 22:12:54,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=248, PETRI_PLACES=122, PETRI_TRANSITIONS=120} [2023-11-21 22:12:54,922 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, -8 predicate places. [2023-11-21 22:12:54,923 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 120 transitions, 248 flow [2023-11-21 22:12:54,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 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) [2023-11-21 22:12:54,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:12:54,924 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-21 22:12:54,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-21 22:12:55,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:12:55,129 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK (and 60 more)] === [2023-11-21 22:12:55,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:12:55,130 INFO L85 PathProgramCache]: Analyzing trace with hash 566097, now seen corresponding path program 1 times [2023-11-21 22:12:55,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:12:55,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [233629881] [2023-11-21 22:12:55,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:12:55,132 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:12:55,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:12:55,133 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 22:12:55,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-21 22:12:55,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:12:55,321 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-21 22:12:55,323 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:12:55,344 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-21 22:12:55,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:12:55,361 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:12:55,361 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:12:55,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [233629881] [2023-11-21 22:12:55,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [233629881] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:12:55,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:12:55,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:12:55,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884665015] [2023-11-21 22:12:55,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:12:55,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:12:55,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:12:55,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:12:55,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:12:55,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 136 [2023-11-21 22:12:55,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 120 transitions, 248 flow. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 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) [2023-11-21 22:12:55,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:12:55,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 136 [2023-11-21 22:12:55,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:12:58,540 INFO L124 PetriNetUnfolderBase]: 9323/18949 cut-off events. [2023-11-21 22:12:58,540 INFO L125 PetriNetUnfolderBase]: For 205/205 co-relation queries the response was YES. [2023-11-21 22:12:58,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33675 conditions, 18949 events. 9323/18949 cut-off events. For 205/205 co-relation queries the response was YES. Maximal size of possible extension queue 1103. Compared 190942 event pairs, 559 based on Foata normal form. 1/10955 useless extension candidates. Maximal degree in co-relation 2001. Up to 13528 conditions per place. [2023-11-21 22:12:58,654 INFO L140 encePairwiseOnDemand]: 132/136 looper letters, 93 selfloop transitions, 2 changer transitions 0/144 dead transitions. [2023-11-21 22:12:58,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 144 transitions, 486 flow [2023-11-21 22:12:58,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:12:58,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:12:58,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 256 transitions. [2023-11-21 22:12:58,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6274509803921569 [2023-11-21 22:12:58,668 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 256 transitions. [2023-11-21 22:12:58,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 256 transitions. [2023-11-21 22:12:58,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:12:58,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 256 transitions. [2023-11-21 22:12:58,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 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) [2023-11-21 22:12:58,676 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 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) [2023-11-21 22:12:58,677 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 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) [2023-11-21 22:12:58,677 INFO L175 Difference]: Start difference. First operand has 122 places, 120 transitions, 248 flow. Second operand 3 states and 256 transitions. [2023-11-21 22:12:58,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 144 transitions, 486 flow [2023-11-21 22:12:58,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 144 transitions, 482 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:12:58,685 INFO L231 Difference]: Finished difference. Result has 120 places, 118 transitions, 244 flow [2023-11-21 22:12:58,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=244, PETRI_PLACES=120, PETRI_TRANSITIONS=118} [2023-11-21 22:12:58,687 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, -10 predicate places. [2023-11-21 22:12:58,687 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 118 transitions, 244 flow [2023-11-21 22:12:58,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 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) [2023-11-21 22:12:58,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:12:58,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-21 22:12:58,703 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-21 22:12:58,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:12:58,893 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK (and 60 more)] === [2023-11-21 22:12:58,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:12:58,893 INFO L85 PathProgramCache]: Analyzing trace with hash 17551082, now seen corresponding path program 1 times [2023-11-21 22:12:58,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:12:58,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1675571537] [2023-11-21 22:12:58,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:12:58,896 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:12:58,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:12:58,897 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 22:12:58,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-21 22:12:59,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:12:59,020 INFO L262 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 22:12:59,021 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:12:59,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:12:59,032 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:12:59,033 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:12:59,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1675571537] [2023-11-21 22:12:59,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1675571537] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:12:59,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:12:59,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:12:59,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42524824] [2023-11-21 22:12:59,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:12:59,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:12:59,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:12:59,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:12:59,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:12:59,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 136 [2023-11-21 22:12:59,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 118 transitions, 244 flow. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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) [2023-11-21 22:12:59,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:12:59,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 136 [2023-11-21 22:12:59,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:13:01,381 INFO L124 PetriNetUnfolderBase]: 9322/15242 cut-off events. [2023-11-21 22:13:01,382 INFO L125 PetriNetUnfolderBase]: For 196/196 co-relation queries the response was YES. [2023-11-21 22:13:01,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29968 conditions, 15242 events. 9322/15242 cut-off events. For 196/196 co-relation queries the response was YES. Maximal size of possible extension queue 819. Compared 112676 event pairs, 8957 based on Foata normal form. 1/8645 useless extension candidates. Maximal degree in co-relation 17255. Up to 13949 conditions per place. [2023-11-21 22:13:01,484 INFO L140 encePairwiseOnDemand]: 133/136 looper letters, 93 selfloop transitions, 2 changer transitions 0/143 dead transitions. [2023-11-21 22:13:01,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 143 transitions, 484 flow [2023-11-21 22:13:01,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:13:01,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:13:01,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 258 transitions. [2023-11-21 22:13:01,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6323529411764706 [2023-11-21 22:13:01,487 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 258 transitions. [2023-11-21 22:13:01,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 258 transitions. [2023-11-21 22:13:01,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:13:01,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 258 transitions. [2023-11-21 22:13:01,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 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) [2023-11-21 22:13:01,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 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) [2023-11-21 22:13:01,492 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 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) [2023-11-21 22:13:01,492 INFO L175 Difference]: Start difference. First operand has 120 places, 118 transitions, 244 flow. Second operand 3 states and 258 transitions. [2023-11-21 22:13:01,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 143 transitions, 484 flow [2023-11-21 22:13:01,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 143 transitions, 480 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:13:01,499 INFO L231 Difference]: Finished difference. Result has 120 places, 117 transitions, 242 flow [2023-11-21 22:13:01,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=242, PETRI_PLACES=120, PETRI_TRANSITIONS=117} [2023-11-21 22:13:01,501 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, -10 predicate places. [2023-11-21 22:13:01,501 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 117 transitions, 242 flow [2023-11-21 22:13:01,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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) [2023-11-21 22:13:01,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:13:01,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-21 22:13:01,513 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-11-21 22:13:01,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:13:01,706 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK (and 60 more)] === [2023-11-21 22:13:01,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:13:01,707 INFO L85 PathProgramCache]: Analyzing trace with hash -314772311, now seen corresponding path program 1 times [2023-11-21 22:13:01,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:13:01,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [977397499] [2023-11-21 22:13:01,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:13:01,710 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:13:01,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:13:01,711 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 22:13:01,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-21 22:13:01,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:01,943 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-21 22:13:01,945 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:13:02,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:13:02,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-21 22:13:02,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:13:02,119 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:13:02,119 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:13:02,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [977397499] [2023-11-21 22:13:02,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [977397499] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:13:02,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:13:02,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:13:02,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349464627] [2023-11-21 22:13:02,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:13:02,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:13:02,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:13:02,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:13:02,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:13:02,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 136 [2023-11-21 22:13:02,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 117 transitions, 242 flow. Second operand has 4 states, 4 states have (on average 50.25) internal successors, (201), 4 states have internal predecessors, (201), 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) [2023-11-21 22:13:02,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:13:02,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 136 [2023-11-21 22:13:02,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:13:04,521 INFO L124 PetriNetUnfolderBase]: 9686/16057 cut-off events. [2023-11-21 22:13:04,521 INFO L125 PetriNetUnfolderBase]: For 203/203 co-relation queries the response was YES. [2023-11-21 22:13:04,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31352 conditions, 16057 events. 9686/16057 cut-off events. For 203/203 co-relation queries the response was YES. Maximal size of possible extension queue 857. Compared 120256 event pairs, 8957 based on Foata normal form. 0/9340 useless extension candidates. Maximal degree in co-relation 30027. Up to 13943 conditions per place. [2023-11-21 22:13:04,634 INFO L140 encePairwiseOnDemand]: 129/136 looper letters, 101 selfloop transitions, 3 changer transitions 0/146 dead transitions. [2023-11-21 22:13:04,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 146 transitions, 508 flow [2023-11-21 22:13:04,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:13:04,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-21 22:13:04,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 304 transitions. [2023-11-21 22:13:04,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5588235294117647 [2023-11-21 22:13:04,638 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 304 transitions. [2023-11-21 22:13:04,638 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 304 transitions. [2023-11-21 22:13:04,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:13:04,639 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 304 transitions. [2023-11-21 22:13:04,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 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) [2023-11-21 22:13:04,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 136.0) internal successors, (680), 5 states have internal predecessors, (680), 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) [2023-11-21 22:13:04,644 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 136.0) internal successors, (680), 5 states have internal predecessors, (680), 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) [2023-11-21 22:13:04,644 INFO L175 Difference]: Start difference. First operand has 120 places, 117 transitions, 242 flow. Second operand 4 states and 304 transitions. [2023-11-21 22:13:04,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 146 transitions, 508 flow [2023-11-21 22:13:04,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 146 transitions, 504 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:13:04,673 INFO L231 Difference]: Finished difference. Result has 118 places, 114 transitions, 243 flow [2023-11-21 22:13:04,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=243, PETRI_PLACES=118, PETRI_TRANSITIONS=114} [2023-11-21 22:13:04,674 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, -12 predicate places. [2023-11-21 22:13:04,675 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 114 transitions, 243 flow [2023-11-21 22:13:04,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.25) internal successors, (201), 4 states have internal predecessors, (201), 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) [2023-11-21 22:13:04,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:13:04,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:13:04,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-21 22:13:04,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:13:04,882 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK (and 60 more)] === [2023-11-21 22:13:04,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:13:04,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1848505559, now seen corresponding path program 1 times [2023-11-21 22:13:04,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:13:04,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [298177021] [2023-11-21 22:13:04,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:13:04,884 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:13:04,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:13:04,886 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 22:13:04,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-21 22:13:05,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:05,094 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 22:13:05,096 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:13:05,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:13:05,121 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:13:05,122 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:13:05,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [298177021] [2023-11-21 22:13:05,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [298177021] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:13:05,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:13:05,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:13:05,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803496165] [2023-11-21 22:13:05,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:13:05,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:13:05,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:13:05,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:13:05,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:13:05,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 136 [2023-11-21 22:13:05,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 114 transitions, 243 flow. Second operand has 4 states, 4 states have (on average 56.75) internal successors, (227), 4 states have internal predecessors, (227), 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) [2023-11-21 22:13:05,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:13:05,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 136 [2023-11-21 22:13:05,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:13:06,891 INFO L124 PetriNetUnfolderBase]: 9321/16318 cut-off events. [2023-11-21 22:13:06,892 INFO L125 PetriNetUnfolderBase]: For 213/213 co-relation queries the response was YES. [2023-11-21 22:13:06,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31238 conditions, 16318 events. 9321/16318 cut-off events. For 213/213 co-relation queries the response was YES. Maximal size of possible extension queue 854. Compared 131224 event pairs, 9321 based on Foata normal form. 1/9799 useless extension candidates. Maximal degree in co-relation 28138. Up to 14494 conditions per place. [2023-11-21 22:13:06,971 INFO L140 encePairwiseOnDemand]: 132/136 looper letters, 75 selfloop transitions, 3 changer transitions 1/123 dead transitions. [2023-11-21 22:13:06,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 123 transitions, 422 flow [2023-11-21 22:13:06,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:13:06,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-21 22:13:06,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 299 transitions. [2023-11-21 22:13:06,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5496323529411765 [2023-11-21 22:13:06,974 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 299 transitions. [2023-11-21 22:13:06,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 299 transitions. [2023-11-21 22:13:06,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:13:06,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 299 transitions. [2023-11-21 22:13:06,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 74.75) internal successors, (299), 4 states have internal predecessors, (299), 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) [2023-11-21 22:13:06,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 136.0) internal successors, (680), 5 states have internal predecessors, (680), 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) [2023-11-21 22:13:06,978 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 136.0) internal successors, (680), 5 states have internal predecessors, (680), 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) [2023-11-21 22:13:06,978 INFO L175 Difference]: Start difference. First operand has 118 places, 114 transitions, 243 flow. Second operand 4 states and 299 transitions. [2023-11-21 22:13:06,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 123 transitions, 422 flow [2023-11-21 22:13:06,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 123 transitions, 421 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 22:13:06,993 INFO L231 Difference]: Finished difference. Result has 122 places, 116 transitions, 266 flow [2023-11-21 22:13:06,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=266, PETRI_PLACES=122, PETRI_TRANSITIONS=116} [2023-11-21 22:13:06,995 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, -8 predicate places. [2023-11-21 22:13:06,995 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 116 transitions, 266 flow [2023-11-21 22:13:06,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 4 states have internal predecessors, (227), 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) [2023-11-21 22:13:06,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:13:06,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:13:07,005 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-11-21 22:13:07,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:13:07,201 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK (and 60 more)] === [2023-11-21 22:13:07,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:13:07,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1469098967, now seen corresponding path program 1 times [2023-11-21 22:13:07,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:13:07,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1169411683] [2023-11-21 22:13:07,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:13:07,202 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:13:07,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:13:07,204 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 22:13:07,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-21 22:13:07,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:07,344 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 22:13:07,345 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:13:07,353 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 [2023-11-21 22:13:07,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:13:07,383 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:13:07,383 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:13:07,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1169411683] [2023-11-21 22:13:07,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1169411683] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:13:07,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:13:07,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:13:07,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141527082] [2023-11-21 22:13:07,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:13:07,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:13:07,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:13:07,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:13:07,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:13:07,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 136 [2023-11-21 22:13:07,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 116 transitions, 266 flow. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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) [2023-11-21 22:13:07,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:13:07,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 136 [2023-11-21 22:13:07,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:13:09,237 INFO L124 PetriNetUnfolderBase]: 10049/16855 cut-off events. [2023-11-21 22:13:09,238 INFO L125 PetriNetUnfolderBase]: For 985/985 co-relation queries the response was YES. [2023-11-21 22:13:09,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33495 conditions, 16855 events. 10049/16855 cut-off events. For 985/985 co-relation queries the response was YES. Maximal size of possible extension queue 914. Compared 129133 event pairs, 9321 based on Foata normal form. 0/10028 useless extension candidates. Maximal degree in co-relation 33445. Up to 14501 conditions per place. [2023-11-21 22:13:09,320 INFO L140 encePairwiseOnDemand]: 127/136 looper letters, 95 selfloop transitions, 6 changer transitions 0/137 dead transitions. [2023-11-21 22:13:09,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 137 transitions, 510 flow [2023-11-21 22:13:09,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:13:09,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:13:09,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 244 transitions. [2023-11-21 22:13:09,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5980392156862745 [2023-11-21 22:13:09,322 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 244 transitions. [2023-11-21 22:13:09,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 244 transitions. [2023-11-21 22:13:09,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:13:09,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 244 transitions. [2023-11-21 22:13:09,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 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) [2023-11-21 22:13:09,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 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) [2023-11-21 22:13:09,326 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 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) [2023-11-21 22:13:09,326 INFO L175 Difference]: Start difference. First operand has 122 places, 116 transitions, 266 flow. Second operand 3 states and 244 transitions. [2023-11-21 22:13:09,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 137 transitions, 510 flow [2023-11-21 22:13:09,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 137 transitions, 509 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 22:13:09,340 INFO L231 Difference]: Finished difference. Result has 118 places, 111 transitions, 267 flow [2023-11-21 22:13:09,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=267, PETRI_PLACES=118, PETRI_TRANSITIONS=111} [2023-11-21 22:13:09,341 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, -12 predicate places. [2023-11-21 22:13:09,341 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 111 transitions, 267 flow [2023-11-21 22:13:09,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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) [2023-11-21 22:13:09,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:13:09,342 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:13:09,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-11-21 22:13:09,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:13:09,547 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK (and 60 more)] === [2023-11-21 22:13:09,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:13:09,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1467709359, now seen corresponding path program 1 times [2023-11-21 22:13:09,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:13:09,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [210231925] [2023-11-21 22:13:09,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:13:09,548 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:13:09,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:13:09,549 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 22:13:09,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-21 22:13:09,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:09,798 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-21 22:13:09,799 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:13:09,850 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-11-21 22:13:09,850 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 [2023-11-21 22:13:09,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:13:09,899 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:13:09,899 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:13:09,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [210231925] [2023-11-21 22:13:09,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [210231925] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:13:09,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:13:09,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:13:09,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811156126] [2023-11-21 22:13:09,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:13:09,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:13:09,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:13:09,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:13:09,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:13:10,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 136 [2023-11-21 22:13:10,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 111 transitions, 267 flow. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 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) [2023-11-21 22:13:10,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:13:10,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 136 [2023-11-21 22:13:10,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:13:11,945 INFO L124 PetriNetUnfolderBase]: 9321/15552 cut-off events. [2023-11-21 22:13:11,945 INFO L125 PetriNetUnfolderBase]: For 1579/1579 co-relation queries the response was YES. [2023-11-21 22:13:11,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31268 conditions, 15552 events. 9321/15552 cut-off events. For 1579/1579 co-relation queries the response was YES. Maximal size of possible extension queue 860. Compared 117724 event pairs, 8593 based on Foata normal form. 28/9124 useless extension candidates. Maximal degree in co-relation 27773. Up to 13366 conditions per place. [2023-11-21 22:13:12,034 INFO L140 encePairwiseOnDemand]: 131/136 looper letters, 100 selfloop transitions, 4 changer transitions 0/141 dead transitions. [2023-11-21 22:13:12,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 141 transitions, 535 flow [2023-11-21 22:13:12,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:13:12,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:13:12,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 263 transitions. [2023-11-21 22:13:12,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6446078431372549 [2023-11-21 22:13:12,037 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 263 transitions. [2023-11-21 22:13:12,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 263 transitions. [2023-11-21 22:13:12,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:13:12,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 263 transitions. [2023-11-21 22:13:12,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 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) [2023-11-21 22:13:12,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 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) [2023-11-21 22:13:12,041 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 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) [2023-11-21 22:13:12,041 INFO L175 Difference]: Start difference. First operand has 118 places, 111 transitions, 267 flow. Second operand 3 states and 263 transitions. [2023-11-21 22:13:12,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 141 transitions, 535 flow [2023-11-21 22:13:12,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 141 transitions, 523 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:13:12,055 INFO L231 Difference]: Finished difference. Result has 116 places, 109 transitions, 259 flow [2023-11-21 22:13:12,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=259, PETRI_PLACES=116, PETRI_TRANSITIONS=109} [2023-11-21 22:13:12,057 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, -14 predicate places. [2023-11-21 22:13:12,057 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 109 transitions, 259 flow [2023-11-21 22:13:12,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 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) [2023-11-21 22:13:12,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:13:12,057 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:13:12,064 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-11-21 22:13:12,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:13:12,263 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK (and 60 more)] === [2023-11-21 22:13:12,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:13:12,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1469098966, now seen corresponding path program 1 times [2023-11-21 22:13:12,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:13:12,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1189506662] [2023-11-21 22:13:12,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:13:12,265 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:13:12,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:13:12,266 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 22:13:12,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-21 22:13:12,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:12,436 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 22:13:12,437 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:13:12,448 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-21 22:13:12,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:13:12,514 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:13:12,514 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:13:12,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1189506662] [2023-11-21 22:13:12,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1189506662] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:13:12,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:13:12,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:13:12,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052425481] [2023-11-21 22:13:12,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:13:12,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:13:12,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:13:12,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:13:12,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:13:12,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 136 [2023-11-21 22:13:12,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 109 transitions, 259 flow. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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) [2023-11-21 22:13:12,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:13:12,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 136 [2023-11-21 22:13:12,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:13:15,207 INFO L124 PetriNetUnfolderBase]: 9321/15532 cut-off events. [2023-11-21 22:13:15,207 INFO L125 PetriNetUnfolderBase]: For 1577/1577 co-relation queries the response was YES. [2023-11-21 22:13:15,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31252 conditions, 15532 events. 9321/15532 cut-off events. For 1577/1577 co-relation queries the response was YES. Maximal size of possible extension queue 857. Compared 120488 event pairs, 3107 based on Foata normal form. 394/9500 useless extension candidates. Maximal degree in co-relation 27752. Up to 9600 conditions per place. [2023-11-21 22:13:15,305 INFO L140 encePairwiseOnDemand]: 129/136 looper letters, 106 selfloop transitions, 4 changer transitions 0/141 dead transitions. [2023-11-21 22:13:15,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 141 transitions, 543 flow [2023-11-21 22:13:15,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:13:15,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:13:15,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 259 transitions. [2023-11-21 22:13:15,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6348039215686274 [2023-11-21 22:13:15,309 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 259 transitions. [2023-11-21 22:13:15,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 259 transitions. [2023-11-21 22:13:15,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:13:15,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 259 transitions. [2023-11-21 22:13:15,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 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) [2023-11-21 22:13:15,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 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) [2023-11-21 22:13:15,314 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 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) [2023-11-21 22:13:15,314 INFO L175 Difference]: Start difference. First operand has 116 places, 109 transitions, 259 flow. Second operand 3 states and 259 transitions. [2023-11-21 22:13:15,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 141 transitions, 543 flow [2023-11-21 22:13:15,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 141 transitions, 535 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:13:15,325 INFO L231 Difference]: Finished difference. Result has 117 places, 109 transitions, 271 flow [2023-11-21 22:13:15,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=271, PETRI_PLACES=117, PETRI_TRANSITIONS=109} [2023-11-21 22:13:15,327 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, -13 predicate places. [2023-11-21 22:13:15,327 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 109 transitions, 271 flow [2023-11-21 22:13:15,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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) [2023-11-21 22:13:15,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:13:15,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:13:15,335 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-11-21 22:13:15,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:13:15,534 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK (and 60 more)] === [2023-11-21 22:13:15,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:13:15,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1467709358, now seen corresponding path program 1 times [2023-11-21 22:13:15,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:13:15,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2076062425] [2023-11-21 22:13:15,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:13:15,537 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:13:15,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:13:15,538 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 22:13:15,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-21 22:13:15,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:15,861 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-21 22:13:15,863 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:13:15,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:13:15,934 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-21 22:13:16,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:13:16,051 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:13:16,052 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:13:16,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2076062425] [2023-11-21 22:13:16,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2076062425] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:13:16,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:13:16,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:13:16,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126408918] [2023-11-21 22:13:16,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:13:16,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:13:16,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:13:16,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:13:16,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:13:16,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 136 [2023-11-21 22:13:16,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 109 transitions, 271 flow. Second operand has 4 states, 4 states have (on average 50.75) internal successors, (203), 4 states have internal predecessors, (203), 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) [2023-11-21 22:13:16,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:13:16,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 136 [2023-11-21 22:13:16,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:13:18,335 INFO L124 PetriNetUnfolderBase]: 9347/15524 cut-off events. [2023-11-21 22:13:18,335 INFO L125 PetriNetUnfolderBase]: For 1956/1956 co-relation queries the response was YES. [2023-11-21 22:13:18,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31885 conditions, 15524 events. 9347/15524 cut-off events. For 1956/1956 co-relation queries the response was YES. Maximal size of possible extension queue 857. Compared 116845 event pairs, 8619 based on Foata normal form. 0/9099 useless extension candidates. Maximal degree in co-relation 28191. Up to 13420 conditions per place. [2023-11-21 22:13:18,408 INFO L140 encePairwiseOnDemand]: 131/136 looper letters, 102 selfloop transitions, 4 changer transitions 0/139 dead transitions. [2023-11-21 22:13:18,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 139 transitions, 543 flow [2023-11-21 22:13:18,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:13:18,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-21 22:13:18,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 302 transitions. [2023-11-21 22:13:18,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5551470588235294 [2023-11-21 22:13:18,411 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 302 transitions. [2023-11-21 22:13:18,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 302 transitions. [2023-11-21 22:13:18,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:13:18,412 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 302 transitions. [2023-11-21 22:13:18,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 75.5) internal successors, (302), 4 states have internal predecessors, (302), 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) [2023-11-21 22:13:18,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 136.0) internal successors, (680), 5 states have internal predecessors, (680), 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) [2023-11-21 22:13:18,416 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 136.0) internal successors, (680), 5 states have internal predecessors, (680), 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) [2023-11-21 22:13:18,416 INFO L175 Difference]: Start difference. First operand has 117 places, 109 transitions, 271 flow. Second operand 4 states and 302 transitions. [2023-11-21 22:13:18,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 139 transitions, 543 flow [2023-11-21 22:13:18,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 139 transitions, 535 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:13:18,427 INFO L231 Difference]: Finished difference. Result has 116 places, 107 transitions, 267 flow [2023-11-21 22:13:18,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=267, PETRI_PLACES=116, PETRI_TRANSITIONS=107} [2023-11-21 22:13:18,429 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, -14 predicate places. [2023-11-21 22:13:18,429 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 107 transitions, 267 flow [2023-11-21 22:13:18,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.75) internal successors, (203), 4 states have internal predecessors, (203), 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) [2023-11-21 22:13:18,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:13:18,430 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:13:18,437 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-11-21 22:13:18,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:13:18,637 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting my_callbackErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK (and 60 more)] === [2023-11-21 22:13:18,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:13:18,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1716196392, now seen corresponding path program 1 times [2023-11-21 22:13:18,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:13:18,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1156246099] [2023-11-21 22:13:18,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:13:18,638 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:13:18,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:13:18,639 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 22:13:18,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-21 22:13:18,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:18,848 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-21 22:13:18,850 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:13:18,858 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 [2023-11-21 22:13:18,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:13:18,915 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:13:18,915 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:13:18,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1156246099] [2023-11-21 22:13:18,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1156246099] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:13:18,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:13:18,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:13:18,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893088976] [2023-11-21 22:13:18,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:13:18,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:13:18,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:13:18,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:13:18,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:13:19,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 136 [2023-11-21 22:13:19,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 107 transitions, 267 flow. Second operand has 5 states, 5 states have (on average 56.6) internal successors, (283), 5 states have internal predecessors, (283), 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) [2023-11-21 22:13:19,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:13:19,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 136 [2023-11-21 22:13:19,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:13:21,580 INFO L124 PetriNetUnfolderBase]: 7623/13948 cut-off events. [2023-11-21 22:13:21,580 INFO L125 PetriNetUnfolderBase]: For 1257/1257 co-relation queries the response was YES. [2023-11-21 22:13:21,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27205 conditions, 13948 events. 7623/13948 cut-off events. For 1257/1257 co-relation queries the response was YES. Maximal size of possible extension queue 683. Compared 115505 event pairs, 55 based on Foata normal form. 0/9306 useless extension candidates. Maximal degree in co-relation 22992. Up to 9075 conditions per place. [2023-11-21 22:13:21,652 INFO L140 encePairwiseOnDemand]: 124/136 looper letters, 183 selfloop transitions, 13 changer transitions 0/231 dead transitions. [2023-11-21 22:13:21,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 231 transitions, 922 flow [2023-11-21 22:13:21,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 22:13:21,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-21 22:13:21,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 643 transitions. [2023-11-21 22:13:21,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5909926470588235 [2023-11-21 22:13:21,656 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 643 transitions. [2023-11-21 22:13:21,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 643 transitions. [2023-11-21 22:13:21,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:13:21,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 643 transitions. [2023-11-21 22:13:21,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 80.375) internal successors, (643), 8 states have internal predecessors, (643), 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) [2023-11-21 22:13:21,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 136.0) internal successors, (1224), 9 states have internal predecessors, (1224), 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) [2023-11-21 22:13:21,664 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 136.0) internal successors, (1224), 9 states have internal predecessors, (1224), 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) [2023-11-21 22:13:21,664 INFO L175 Difference]: Start difference. First operand has 116 places, 107 transitions, 267 flow. Second operand 8 states and 643 transitions. [2023-11-21 22:13:21,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 231 transitions, 922 flow [2023-11-21 22:13:21,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 231 transitions, 916 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:13:21,691 INFO L231 Difference]: Finished difference. Result has 125 places, 114 transitions, 352 flow [2023-11-21 22:13:21,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=352, PETRI_PLACES=125, PETRI_TRANSITIONS=114} [2023-11-21 22:13:21,692 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, -5 predicate places. [2023-11-21 22:13:21,692 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 114 transitions, 352 flow [2023-11-21 22:13:21,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 56.6) internal successors, (283), 5 states have internal predecessors, (283), 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) [2023-11-21 22:13:21,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:13:21,693 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:13:21,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-11-21 22:13:21,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:13:21,894 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK (and 60 more)] === [2023-11-21 22:13:21,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:13:21,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1716196391, now seen corresponding path program 1 times [2023-11-21 22:13:21,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:13:21,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1880513796] [2023-11-21 22:13:21,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:13:21,895 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:13:21,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:13:21,896 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 22:13:21,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-21 22:13:22,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:22,063 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-21 22:13:22,065 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:13:22,077 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-21 22:13:22,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:13:22,181 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:13:22,182 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:13:22,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1880513796] [2023-11-21 22:13:22,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1880513796] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:13:22,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:13:22,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:13:22,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676506547] [2023-11-21 22:13:22,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:13:22,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:13:22,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:13:22,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:13:22,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:13:22,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 136 [2023-11-21 22:13:22,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 114 transitions, 352 flow. Second operand has 5 states, 5 states have (on average 56.6) internal successors, (283), 5 states have internal predecessors, (283), 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) [2023-11-21 22:13:22,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:13:22,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 136 [2023-11-21 22:13:22,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:13:24,701 INFO L124 PetriNetUnfolderBase]: 6646/11937 cut-off events. [2023-11-21 22:13:24,701 INFO L125 PetriNetUnfolderBase]: For 4358/4358 co-relation queries the response was YES. [2023-11-21 22:13:24,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25610 conditions, 11937 events. 6646/11937 cut-off events. For 4358/4358 co-relation queries the response was YES. Maximal size of possible extension queue 611. Compared 94222 event pairs, 972 based on Foata normal form. 524/9279 useless extension candidates. Maximal degree in co-relation 24144. Up to 6594 conditions per place. [2023-11-21 22:13:24,767 INFO L140 encePairwiseOnDemand]: 128/136 looper letters, 151 selfloop transitions, 10 changer transitions 1/197 dead transitions. [2023-11-21 22:13:24,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 197 transitions, 862 flow [2023-11-21 22:13:24,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 22:13:24,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-21 22:13:24,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 548 transitions. [2023-11-21 22:13:24,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5756302521008403 [2023-11-21 22:13:24,771 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 548 transitions. [2023-11-21 22:13:24,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 548 transitions. [2023-11-21 22:13:24,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:13:24,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 548 transitions. [2023-11-21 22:13:24,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 78.28571428571429) internal successors, (548), 7 states have internal predecessors, (548), 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) [2023-11-21 22:13:24,776 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 136.0) internal successors, (1088), 8 states have internal predecessors, (1088), 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) [2023-11-21 22:13:24,777 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 136.0) internal successors, (1088), 8 states have internal predecessors, (1088), 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) [2023-11-21 22:13:24,777 INFO L175 Difference]: Start difference. First operand has 125 places, 114 transitions, 352 flow. Second operand 7 states and 548 transitions. [2023-11-21 22:13:24,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 197 transitions, 862 flow [2023-11-21 22:13:24,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 197 transitions, 855 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-21 22:13:24,810 INFO L231 Difference]: Finished difference. Result has 133 places, 116 transitions, 400 flow [2023-11-21 22:13:24,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=400, PETRI_PLACES=133, PETRI_TRANSITIONS=116} [2023-11-21 22:13:24,812 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, 3 predicate places. [2023-11-21 22:13:24,812 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 116 transitions, 400 flow [2023-11-21 22:13:24,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 56.6) internal successors, (283), 5 states have internal predecessors, (283), 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) [2023-11-21 22:13:24,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:13:24,812 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:13:24,820 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-11-21 22:13:25,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:13:25,018 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK (and 60 more)] === [2023-11-21 22:13:25,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:13:25,018 INFO L85 PathProgramCache]: Analyzing trace with hash 63694811, now seen corresponding path program 1 times [2023-11-21 22:13:25,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:13:25,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [219729736] [2023-11-21 22:13:25,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:13:25,019 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:13:25,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:13:25,021 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 22:13:25,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fd75a2d-f656-4a3f-a1a2-31689764b132/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-11-21 22:13:25,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:25,378 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-21 22:13:25,383 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:13:25,395 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-21 22:13:25,396 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-21 22:13:25,397 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-21 22:13:25,403 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 41 [2023-11-21 22:13:25,461 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-21 22:13:25,462 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-21 22:13:25,463 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-21 22:13:25,475 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 22:13:25,476 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 73 treesize of output 93 [2023-11-21 22:13:25,730 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 22:13:25,731 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 161 treesize of output 65 [2023-11-21 22:13:25,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:13:25,761 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:13:25,761 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:13:25,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [219729736] [2023-11-21 22:13:25,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [219729736] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:13:25,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:13:25,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:13:25,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807628532] [2023-11-21 22:13:25,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:13:25,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:13:25,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:13:25,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:13:25,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:13:26,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 136 [2023-11-21 22:13:26,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 116 transitions, 400 flow. Second operand has 5 states, 5 states have (on average 52.2) internal successors, (261), 5 states have internal predecessors, (261), 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) [2023-11-21 22:13:26,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:13:26,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 136 [2023-11-21 22:13:26,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand