./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-memsafety/fillarray.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04c7b8a-bd41-49b6-ad3a-b82dbb33fe7c/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04c7b8a-bd41-49b6-ad3a-b82dbb33fe7c/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_f04c7b8a-bd41-49b6-ad3a-b82dbb33fe7c/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04c7b8a-bd41-49b6-ad3a-b82dbb33fe7c/bin/uautomizer-verify-bycVGegfSx/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-memsafety/fillarray.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04c7b8a-bd41-49b6-ad3a-b82dbb33fe7c/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_f04c7b8a-bd41-49b6-ad3a-b82dbb33fe7c/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 042c5199cb977bee0e9fb33f98d35f27e793036e412b430f7152f110aa730c52 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 21:02:50,129 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 21:02:50,211 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04c7b8a-bd41-49b6-ad3a-b82dbb33fe7c/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-21 21:02:50,217 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 21:02:50,217 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 21:02:50,269 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 21:02:50,270 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 21:02:50,271 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 21:02:50,273 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 21:02:50,278 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 21:02:50,279 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 21:02:50,280 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 21:02:50,280 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 21:02:50,282 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 21:02:50,282 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 21:02:50,283 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 21:02:50,283 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 21:02:50,284 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 21:02:50,284 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 21:02:50,285 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 21:02:50,285 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 21:02:50,286 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 21:02:50,286 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 21:02:50,286 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 21:02:50,287 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 21:02:50,287 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 21:02:50,288 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 21:02:50,289 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 21:02:50,289 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 21:02:50,290 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 21:02:50,291 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 21:02:50,291 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 21:02:50,292 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 21:02:50,292 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 21:02:50,292 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 21:02:50,292 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 21:02:50,293 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 21:02:50,293 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 21:02:50,293 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 21:02:50,293 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_f04c7b8a-bd41-49b6-ad3a-b82dbb33fe7c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04c7b8a-bd41-49b6-ad3a-b82dbb33fe7c/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 042c5199cb977bee0e9fb33f98d35f27e793036e412b430f7152f110aa730c52 [2023-11-21 21:02:50,557 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 21:02:50,582 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 21:02:50,585 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 21:02:50,587 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 21:02:50,587 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 21:02:50,589 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04c7b8a-bd41-49b6-ad3a-b82dbb33fe7c/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/pthread-memsafety/fillarray.i [2023-11-21 21:02:53,899 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 21:02:54,469 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 21:02:54,469 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04c7b8a-bd41-49b6-ad3a-b82dbb33fe7c/sv-benchmarks/c/pthread-memsafety/fillarray.i [2023-11-21 21:02:54,500 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04c7b8a-bd41-49b6-ad3a-b82dbb33fe7c/bin/uautomizer-verify-bycVGegfSx/data/d73c2e1a8/f78ea4860d034fa5bd7cb64606d22ab8/FLAG6824da532 [2023-11-21 21:02:54,526 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04c7b8a-bd41-49b6-ad3a-b82dbb33fe7c/bin/uautomizer-verify-bycVGegfSx/data/d73c2e1a8/f78ea4860d034fa5bd7cb64606d22ab8 [2023-11-21 21:02:54,534 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 21:02:54,538 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 21:02:54,543 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 21:02:54,543 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 21:02:54,551 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 21:02:54,552 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:02:54" (1/1) ... [2023-11-21 21:02:54,553 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c7cafef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:54, skipping insertion in model container [2023-11-21 21:02:54,553 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:02:54" (1/1) ... [2023-11-21 21:02:54,642 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 21:02:55,296 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 21:02:55,312 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 21:02:55,313 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@53f3e56a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:55, skipping insertion in model container [2023-11-21 21:02:55,313 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 21:02:55,314 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-21 21:02:55,316 INFO L158 Benchmark]: Toolchain (without parser) took 776.93ms. Allocated memory is still 123.7MB. Free memory was 91.5MB in the beginning and 77.5MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-21 21:02:55,317 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 123.7MB. Free memory is still 80.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 21:02:55,318 INFO L158 Benchmark]: CACSL2BoogieTranslator took 770.70ms. Allocated memory is still 123.7MB. Free memory was 91.2MB in the beginning and 77.5MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-21 21:02:55,321 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 123.7MB. Free memory is still 80.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 770.70ms. Allocated memory is still 123.7MB. Free memory was 91.2MB in the beginning and 77.5MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1041]: 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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04c7b8a-bd41-49b6-ad3a-b82dbb33fe7c/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04c7b8a-bd41-49b6-ad3a-b82dbb33fe7c/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_f04c7b8a-bd41-49b6-ad3a-b82dbb33fe7c/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04c7b8a-bd41-49b6-ad3a-b82dbb33fe7c/bin/uautomizer-verify-bycVGegfSx/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-memsafety/fillarray.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04c7b8a-bd41-49b6-ad3a-b82dbb33fe7c/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_f04c7b8a-bd41-49b6-ad3a-b82dbb33fe7c/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 042c5199cb977bee0e9fb33f98d35f27e793036e412b430f7152f110aa730c52 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 21:02:58,559 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 21:02:58,720 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04c7b8a-bd41-49b6-ad3a-b82dbb33fe7c/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-21 21:02:58,730 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 21:02:58,731 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 21:02:58,781 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 21:02:58,783 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 21:02:58,783 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 21:02:58,785 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 21:02:58,791 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 21:02:58,792 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 21:02:58,792 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 21:02:58,793 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 21:02:58,795 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 21:02:58,796 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 21:02:58,796 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 21:02:58,797 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 21:02:58,797 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 21:02:58,798 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 21:02:58,798 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 21:02:58,799 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 21:02:58,799 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 21:02:58,800 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 21:02:58,800 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-21 21:02:58,801 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-21 21:02:58,802 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 21:02:58,802 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 21:02:58,803 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 21:02:58,804 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 21:02:58,804 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 21:02:58,806 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 21:02:58,806 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 21:02:58,806 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 21:02:58,807 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 21:02:58,807 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 21:02:58,808 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-21 21:02:58,808 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-21 21:02:58,808 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 21:02:58,809 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 21:02:58,810 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 21:02:58,810 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 21:02:58,810 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-21 21:02:58,811 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_f04c7b8a-bd41-49b6-ad3a-b82dbb33fe7c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04c7b8a-bd41-49b6-ad3a-b82dbb33fe7c/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 042c5199cb977bee0e9fb33f98d35f27e793036e412b430f7152f110aa730c52 [2023-11-21 21:02:59,286 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 21:02:59,319 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 21:02:59,323 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 21:02:59,324 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 21:02:59,325 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 21:02:59,327 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04c7b8a-bd41-49b6-ad3a-b82dbb33fe7c/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/pthread-memsafety/fillarray.i [2023-11-21 21:03:03,028 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 21:03:03,551 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 21:03:03,552 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04c7b8a-bd41-49b6-ad3a-b82dbb33fe7c/sv-benchmarks/c/pthread-memsafety/fillarray.i [2023-11-21 21:03:03,589 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04c7b8a-bd41-49b6-ad3a-b82dbb33fe7c/bin/uautomizer-verify-bycVGegfSx/data/08327b137/b8800c439392452da98fdd3e42421af8/FLAGceb7f7a09 [2023-11-21 21:03:03,620 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04c7b8a-bd41-49b6-ad3a-b82dbb33fe7c/bin/uautomizer-verify-bycVGegfSx/data/08327b137/b8800c439392452da98fdd3e42421af8 [2023-11-21 21:03:03,628 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 21:03:03,630 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 21:03:03,635 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 21:03:03,635 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 21:03:03,642 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 21:03:03,643 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:03:03" (1/1) ... [2023-11-21 21:03:03,645 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c24b139 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:03, skipping insertion in model container [2023-11-21 21:03:03,645 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:03:03" (1/1) ... [2023-11-21 21:03:03,740 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 21:03:04,589 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 21:03:04,620 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-21 21:03:04,654 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 21:03:04,725 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 21:03:04,735 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 21:03:04,853 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 21:03:04,977 INFO L206 MainTranslator]: Completed translation [2023-11-21 21:03:04,977 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:04 WrapperNode [2023-11-21 21:03:04,978 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 21:03:04,979 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 21:03:04,980 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 21:03:04,980 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 21:03:04,989 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:04" (1/1) ... [2023-11-21 21:03:05,019 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:04" (1/1) ... [2023-11-21 21:03:05,052 INFO L138 Inliner]: procedures = 263, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 48 [2023-11-21 21:03:05,053 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 21:03:05,054 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 21:03:05,054 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 21:03:05,054 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 21:03:05,067 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:04" (1/1) ... [2023-11-21 21:03:05,068 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:04" (1/1) ... [2023-11-21 21:03:05,073 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:04" (1/1) ... [2023-11-21 21:03:05,074 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:04" (1/1) ... [2023-11-21 21:03:05,096 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:04" (1/1) ... [2023-11-21 21:03:05,100 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:04" (1/1) ... [2023-11-21 21:03:05,104 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:04" (1/1) ... [2023-11-21 21:03:05,111 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:04" (1/1) ... [2023-11-21 21:03:05,117 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 21:03:05,120 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 21:03:05,127 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 21:03:05,128 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 21:03:05,129 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:04" (1/1) ... [2023-11-21 21:03:05,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 21:03:05,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04c7b8a-bd41-49b6-ad3a-b82dbb33fe7c/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:03:05,188 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04c7b8a-bd41-49b6-ad3a-b82dbb33fe7c/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 21:03:05,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04c7b8a-bd41-49b6-ad3a-b82dbb33fe7c/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 21:03:05,246 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-21 21:03:05,247 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-21 21:03:05,247 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-21 21:03:05,247 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-21 21:03:05,248 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 21:03:05,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 21:03:05,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-21 21:03:05,249 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 21:03:05,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 21:03:05,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 21:03:05,254 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 21:03:05,537 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 21:03:05,541 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 21:03:06,000 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 21:03:06,176 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 21:03:06,176 INFO L308 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-21 21:03:06,178 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:03:06 BoogieIcfgContainer [2023-11-21 21:03:06,178 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 21:03:06,181 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 21:03:06,181 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 21:03:06,186 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 21:03:06,186 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 09:03:03" (1/3) ... [2023-11-21 21:03:06,187 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a0840bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:03:06, skipping insertion in model container [2023-11-21 21:03:06,187 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:04" (2/3) ... [2023-11-21 21:03:06,188 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a0840bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:03:06, skipping insertion in model container [2023-11-21 21:03:06,188 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:03:06" (3/3) ... [2023-11-21 21:03:06,189 INFO L112 eAbstractionObserver]: Analyzing ICFG fillarray.i [2023-11-21 21:03:06,214 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 21:03:06,214 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-11-21 21:03:06,214 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-21 21:03:06,328 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-21 21:03:06,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 35 transitions, 78 flow [2023-11-21 21:03:06,425 INFO L124 PetriNetUnfolderBase]: 2/35 cut-off events. [2023-11-21 21:03:06,425 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 21:03:06,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 35 events. 2/35 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 68 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 28. Up to 2 conditions per place. [2023-11-21 21:03:06,433 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 35 transitions, 78 flow [2023-11-21 21:03:06,447 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 33 transitions, 72 flow [2023-11-21 21:03:06,466 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 21:03:06,479 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;@7aea21d6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 21:03:06,480 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-11-21 21:03:06,486 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 21:03:06,486 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2023-11-21 21:03:06,486 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 21:03:06,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:03:06,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-21 21:03:06,488 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (and 15 more)] === [2023-11-21 21:03:06,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:03:06,496 INFO L85 PathProgramCache]: Analyzing trace with hash 213436, now seen corresponding path program 1 times [2023-11-21 21:03:06,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 21:03:06,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1993269100] [2023-11-21 21:03:06,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:03:06,512 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 21:03:06,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04c7b8a-bd41-49b6-ad3a-b82dbb33fe7c/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 21:03:06,519 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04c7b8a-bd41-49b6-ad3a-b82dbb33fe7c/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 21:03:06,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04c7b8a-bd41-49b6-ad3a-b82dbb33fe7c/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 21:03:06,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:06,663 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 21:03:06,669 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:03:06,813 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-21 21:03:06,814 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 1 case distinctions, treesize of input 9 treesize of output 15 [2023-11-21 21:03:06,848 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-21 21:03:06,849 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 1 case distinctions, treesize of input 9 treesize of output 15 [2023-11-21 21:03:06,896 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-21 21:03:06,897 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 15 [2023-11-21 21:03:06,940 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 21:03:06,940 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:03:06,941 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 21:03:06,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1993269100] [2023-11-21 21:03:06,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1993269100] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:03:06,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:03:06,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 21:03:06,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501380085] [2023-11-21 21:03:06,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:03:06,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 21:03:06,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 21:03:07,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:03:07,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:03:07,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 35 [2023-11-21 21:03:07,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 33 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:03:07,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 21:03:07,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 35 [2023-11-21 21:03:07,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 21:03:07,354 INFO L124 PetriNetUnfolderBase]: 98/258 cut-off events. [2023-11-21 21:03:07,354 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-21 21:03:07,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 436 conditions, 258 events. 98/258 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1258 event pairs, 39 based on Foata normal form. 0/174 useless extension candidates. Maximal degree in co-relation 416. Up to 84 conditions per place. [2023-11-21 21:03:07,362 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 20 selfloop transitions, 2 changer transitions 0/38 dead transitions. [2023-11-21 21:03:07,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 38 transitions, 126 flow [2023-11-21 21:03:07,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:03:07,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 21:03:07,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 77 transitions. [2023-11-21 21:03:07,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7333333333333333 [2023-11-21 21:03:07,381 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 77 transitions. [2023-11-21 21:03:07,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 77 transitions. [2023-11-21 21:03:07,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:03:07,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 77 transitions. [2023-11-21 21:03:07,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 21:03:07,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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 21:03:07,396 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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 21:03:07,398 INFO L175 Difference]: Start difference. First operand has 37 places, 33 transitions, 72 flow. Second operand 3 states and 77 transitions. [2023-11-21 21:03:07,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 38 transitions, 126 flow [2023-11-21 21:03:07,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 38 transitions, 124 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 21:03:07,410 INFO L231 Difference]: Finished difference. Result has 36 places, 32 transitions, 72 flow [2023-11-21 21:03:07,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=36, PETRI_TRANSITIONS=32} [2023-11-21 21:03:07,420 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -1 predicate places. [2023-11-21 21:03:07,420 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 32 transitions, 72 flow [2023-11-21 21:03:07,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:03:07,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:03:07,422 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-21 21:03:07,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04c7b8a-bd41-49b6-ad3a-b82dbb33fe7c/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 21:03:07,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04c7b8a-bd41-49b6-ad3a-b82dbb33fe7c/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 21:03:07,625 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (and 15 more)] === [2023-11-21 21:03:07,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:03:07,626 INFO L85 PathProgramCache]: Analyzing trace with hash 213437, now seen corresponding path program 1 times [2023-11-21 21:03:07,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 21:03:07,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1614540662] [2023-11-21 21:03:07,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:03:07,628 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 21:03:07,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04c7b8a-bd41-49b6-ad3a-b82dbb33fe7c/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 21:03:07,631 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04c7b8a-bd41-49b6-ad3a-b82dbb33fe7c/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 21:03:07,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04c7b8a-bd41-49b6-ad3a-b82dbb33fe7c/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 21:03:07,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:07,788 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-21 21:03:07,791 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:03:07,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 21:03:07,851 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-21 21:03:07,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 21:03:07,905 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-21 21:03:07,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 21:03:07,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 21:03:07,930 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-21 21:03:07,946 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 21:03:07,947 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:03:07,947 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 21:03:07,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1614540662] [2023-11-21 21:03:07,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1614540662] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:03:07,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:03:07,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 21:03:07,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226122673] [2023-11-21 21:03:07,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:03:07,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 21:03:07,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 21:03:07,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:03:07,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:03:08,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 35 [2023-11-21 21:03:08,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 32 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 21:03:08,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 21:03:08,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 35 [2023-11-21 21:03:08,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 21:03:08,288 INFO L124 PetriNetUnfolderBase]: 98/257 cut-off events. [2023-11-21 21:03:08,292 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-21 21:03:08,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 450 conditions, 257 events. 98/257 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1261 event pairs, 39 based on Foata normal form. 1/175 useless extension candidates. Maximal degree in co-relation 432. Up to 84 conditions per place. [2023-11-21 21:03:08,299 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 19 selfloop transitions, 2 changer transitions 0/37 dead transitions. [2023-11-21 21:03:08,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 37 transitions, 124 flow [2023-11-21 21:03:08,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:03:08,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 21:03:08,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 79 transitions. [2023-11-21 21:03:08,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7523809523809524 [2023-11-21 21:03:08,308 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 79 transitions. [2023-11-21 21:03:08,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 79 transitions. [2023-11-21 21:03:08,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:03:08,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 79 transitions. [2023-11-21 21:03:08,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 21:03:08,315 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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 21:03:08,317 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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 21:03:08,317 INFO L175 Difference]: Start difference. First operand has 36 places, 32 transitions, 72 flow. Second operand 3 states and 79 transitions. [2023-11-21 21:03:08,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 37 transitions, 124 flow [2023-11-21 21:03:08,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 37 transitions, 120 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 21:03:08,323 INFO L231 Difference]: Finished difference. Result has 35 places, 31 transitions, 70 flow [2023-11-21 21:03:08,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=35, PETRI_TRANSITIONS=31} [2023-11-21 21:03:08,326 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -2 predicate places. [2023-11-21 21:03:08,326 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 31 transitions, 70 flow [2023-11-21 21:03:08,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 21:03:08,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:03:08,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-21 21:03:08,336 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04c7b8a-bd41-49b6-ad3a-b82dbb33fe7c/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)] Ended with exit code 0 [2023-11-21 21:03:08,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04c7b8a-bd41-49b6-ad3a-b82dbb33fe7c/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 21:03:08,531 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (and 15 more)] === [2023-11-21 21:03:08,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:03:08,532 INFO L85 PathProgramCache]: Analyzing trace with hash 213461, now seen corresponding path program 1 times [2023-11-21 21:03:08,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 21:03:08,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1720816134] [2023-11-21 21:03:08,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:03:08,534 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 21:03:08,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04c7b8a-bd41-49b6-ad3a-b82dbb33fe7c/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 21:03:08,536 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04c7b8a-bd41-49b6-ad3a-b82dbb33fe7c/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 21:03:08,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04c7b8a-bd41-49b6-ad3a-b82dbb33fe7c/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 21:03:08,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:08,604 INFO L262 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 21:03:08,604 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:03:08,613 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 21:03:08,614 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:03:08,614 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 21:03:08,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1720816134] [2023-11-21 21:03:08,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1720816134] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:03:08,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:03:08,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 21:03:08,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951963484] [2023-11-21 21:03:08,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:03:08,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 21:03:08,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 21:03:08,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:03:08,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:03:08,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 35 [2023-11-21 21:03:08,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 31 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 21:03:08,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 21:03:08,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 35 [2023-11-21 21:03:08,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 21:03:08,814 INFO L124 PetriNetUnfolderBase]: 126/292 cut-off events. [2023-11-21 21:03:08,814 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-21 21:03:08,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 525 conditions, 292 events. 126/292 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1321 event pairs, 87 based on Foata normal form. 0/177 useless extension candidates. Maximal degree in co-relation 508. Up to 161 conditions per place. [2023-11-21 21:03:08,820 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 18 selfloop transitions, 3 changer transitions 2/38 dead transitions. [2023-11-21 21:03:08,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 38 transitions, 130 flow [2023-11-21 21:03:08,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:03:08,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 21:03:08,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2023-11-21 21:03:08,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7714285714285715 [2023-11-21 21:03:08,824 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 81 transitions. [2023-11-21 21:03:08,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 81 transitions. [2023-11-21 21:03:08,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:03:08,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 81 transitions. [2023-11-21 21:03:08,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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 21:03:08,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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 21:03:08,827 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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 21:03:08,827 INFO L175 Difference]: Start difference. First operand has 35 places, 31 transitions, 70 flow. Second operand 3 states and 81 transitions. [2023-11-21 21:03:08,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 38 transitions, 130 flow [2023-11-21 21:03:08,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 38 transitions, 126 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 21:03:08,831 INFO L231 Difference]: Finished difference. Result has 36 places, 30 transitions, 75 flow [2023-11-21 21:03:08,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=75, PETRI_PLACES=36, PETRI_TRANSITIONS=30} [2023-11-21 21:03:08,832 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -1 predicate places. [2023-11-21 21:03:08,833 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 30 transitions, 75 flow [2023-11-21 21:03:08,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 21:03:08,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:03:08,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-21 21:03:08,836 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04c7b8a-bd41-49b6-ad3a-b82dbb33fe7c/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 21:03:09,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04c7b8a-bd41-49b6-ad3a-b82dbb33fe7c/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 21:03:09,036 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (and 15 more)] === [2023-11-21 21:03:09,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:03:09,037 INFO L85 PathProgramCache]: Analyzing trace with hash 2063678775, now seen corresponding path program 1 times [2023-11-21 21:03:09,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 21:03:09,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1175569158] [2023-11-21 21:03:09,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:03:09,038 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 21:03:09,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04c7b8a-bd41-49b6-ad3a-b82dbb33fe7c/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 21:03:09,041 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04c7b8a-bd41-49b6-ad3a-b82dbb33fe7c/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 21:03:09,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04c7b8a-bd41-49b6-ad3a-b82dbb33fe7c/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 21:03:09,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:09,176 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 21:03:09,178 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:03:09,209 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-21 21:03:09,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 21:03:09,244 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-21 21:03:09,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 21:03:09,266 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-21 21:03:09,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 21:03:09,275 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-21 21:03:09,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 21:03:09,297 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-21 21:03:09,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 21:03:09,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-21 21:03:09,334 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 21:03:09,335 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:03:09,335 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 21:03:09,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1175569158] [2023-11-21 21:03:09,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1175569158] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:03:09,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:03:09,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 21:03:09,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853480885] [2023-11-21 21:03:09,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:03:09,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 21:03:09,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 21:03:09,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:03:09,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:03:09,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 35 [2023-11-21 21:03:09,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 30 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 21:03:09,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 21:03:09,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 35 [2023-11-21 21:03:09,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 21:03:09,535 INFO L124 PetriNetUnfolderBase]: 101/259 cut-off events. [2023-11-21 21:03:09,536 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-21 21:03:09,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 476 conditions, 259 events. 101/259 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1210 event pairs, 42 based on Foata normal form. 0/178 useless extension candidates. Maximal degree in co-relation 460. Up to 87 conditions per place. [2023-11-21 21:03:09,543 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 19 selfloop transitions, 2 changer transitions 0/35 dead transitions. [2023-11-21 21:03:09,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 35 transitions, 127 flow [2023-11-21 21:03:09,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:03:09,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 21:03:09,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 76 transitions. [2023-11-21 21:03:09,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7238095238095238 [2023-11-21 21:03:09,559 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 76 transitions. [2023-11-21 21:03:09,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 76 transitions. [2023-11-21 21:03:09,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:03:09,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 76 transitions. [2023-11-21 21:03:09,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 21:03:09,562 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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 21:03:09,563 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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 21:03:09,563 INFO L175 Difference]: Start difference. First operand has 36 places, 30 transitions, 75 flow. Second operand 3 states and 76 transitions. [2023-11-21 21:03:09,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 35 transitions, 127 flow [2023-11-21 21:03:09,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 35 transitions, 116 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-21 21:03:09,568 INFO L231 Difference]: Finished difference. Result has 34 places, 29 transitions, 66 flow [2023-11-21 21:03:09,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=34, PETRI_TRANSITIONS=29} [2023-11-21 21:03:09,569 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -3 predicate places. [2023-11-21 21:03:09,570 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 29 transitions, 66 flow [2023-11-21 21:03:09,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 21:03:09,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:03:09,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-21 21:03:09,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04c7b8a-bd41-49b6-ad3a-b82dbb33fe7c/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 21:03:09,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04c7b8a-bd41-49b6-ad3a-b82dbb33fe7c/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 21:03:09,775 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (and 15 more)] === [2023-11-21 21:03:09,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:03:09,776 INFO L85 PathProgramCache]: Analyzing trace with hash 2063678776, now seen corresponding path program 1 times [2023-11-21 21:03:09,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 21:03:09,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1382515308] [2023-11-21 21:03:09,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:03:09,778 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 21:03:09,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04c7b8a-bd41-49b6-ad3a-b82dbb33fe7c/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 21:03:09,779 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04c7b8a-bd41-49b6-ad3a-b82dbb33fe7c/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 21:03:09,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04c7b8a-bd41-49b6-ad3a-b82dbb33fe7c/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 21:03:09,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:09,885 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 21:03:09,887 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:03:09,916 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 21:03:09,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 21:03:09,935 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-21 21:03:09,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 21:03:09,964 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-21 21:03:09,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 21:03:09,998 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-21 21:03:10,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 21:03:10,011 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-21 21:03:10,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 21:03:10,022 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-21 21:03:10,065 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 21:03:10,066 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:03:10,066 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 21:03:10,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1382515308] [2023-11-21 21:03:10,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1382515308] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:03:10,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:03:10,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 21:03:10,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306536724] [2023-11-21 21:03:10,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:03:10,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 21:03:10,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 21:03:10,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:03:10,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:03:10,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 35 [2023-11-21 21:03:10,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 29 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 21:03:10,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 21:03:10,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 35 [2023-11-21 21:03:10,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 21:03:10,240 INFO L124 PetriNetUnfolderBase]: 98/252 cut-off events. [2023-11-21 21:03:10,241 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-21 21:03:10,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 443 conditions, 252 events. 98/252 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1191 event pairs, 39 based on Foata normal form. 4/175 useless extension candidates. Maximal degree in co-relation 430. Up to 82 conditions per place. [2023-11-21 21:03:10,244 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 18 selfloop transitions, 2 changer transitions 0/34 dead transitions. [2023-11-21 21:03:10,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 34 transitions, 116 flow [2023-11-21 21:03:10,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:03:10,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 21:03:10,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2023-11-21 21:03:10,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7428571428571429 [2023-11-21 21:03:10,246 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 78 transitions. [2023-11-21 21:03:10,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 78 transitions. [2023-11-21 21:03:10,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:03:10,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 78 transitions. [2023-11-21 21:03:10,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 21:03:10,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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 21:03:10,248 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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 21:03:10,249 INFO L175 Difference]: Start difference. First operand has 34 places, 29 transitions, 66 flow. Second operand 3 states and 78 transitions. [2023-11-21 21:03:10,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 34 transitions, 116 flow [2023-11-21 21:03:10,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 34 transitions, 112 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 21:03:10,251 INFO L231 Difference]: Finished difference. Result has 33 places, 28 transitions, 64 flow [2023-11-21 21:03:10,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=33, PETRI_TRANSITIONS=28} [2023-11-21 21:03:10,252 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -4 predicate places. [2023-11-21 21:03:10,252 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 28 transitions, 64 flow [2023-11-21 21:03:10,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 21:03:10,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:03:10,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:03:10,260 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04c7b8a-bd41-49b6-ad3a-b82dbb33fe7c/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 21:03:10,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04c7b8a-bd41-49b6-ad3a-b82dbb33fe7c/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 21:03:10,455 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (and 15 more)] === [2023-11-21 21:03:10,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:03:10,456 INFO L85 PathProgramCache]: Analyzing trace with hash -450462351, now seen corresponding path program 1 times [2023-11-21 21:03:10,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 21:03:10,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [700905280] [2023-11-21 21:03:10,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:03:10,457 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 21:03:10,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04c7b8a-bd41-49b6-ad3a-b82dbb33fe7c/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 21:03:10,459 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04c7b8a-bd41-49b6-ad3a-b82dbb33fe7c/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 21:03:10,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04c7b8a-bd41-49b6-ad3a-b82dbb33fe7c/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 21:03:10,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:10,561 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-21 21:03:10,563 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:03:10,611 INFO L349 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2023-11-21 21:03:10,611 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 1 case distinctions, treesize of input 24 treesize of output 22 [2023-11-21 21:03:10,642 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-21 21:03:10,642 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 22 [2023-11-21 21:03:10,954 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 21:03:10,955 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:03:10,955 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 21:03:10,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [700905280] [2023-11-21 21:03:10,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [700905280] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:03:10,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:03:10,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 21:03:10,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766866911] [2023-11-21 21:03:10,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:03:10,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 21:03:10,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 21:03:10,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 21:03:10,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 21:03:11,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 35 [2023-11-21 21:03:11,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 64 flow. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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 21:03:11,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 21:03:11,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 35 [2023-11-21 21:03:11,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 21:03:11,877 INFO L124 PetriNetUnfolderBase]: 153/335 cut-off events. [2023-11-21 21:03:11,878 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-21 21:03:11,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 616 conditions, 335 events. 153/335 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1432 event pairs, 32 based on Foata normal form. 8/245 useless extension candidates. Maximal degree in co-relation 603. Up to 100 conditions per place. [2023-11-21 21:03:11,882 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 31 selfloop transitions, 6 changer transitions 0/48 dead transitions. [2023-11-21 21:03:11,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 48 transitions, 182 flow [2023-11-21 21:03:11,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 21:03:11,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 21:03:11,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2023-11-21 21:03:11,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.680952380952381 [2023-11-21 21:03:11,885 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 143 transitions. [2023-11-21 21:03:11,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 143 transitions. [2023-11-21 21:03:11,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:03:11,886 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 143 transitions. [2023-11-21 21:03:11,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 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 21:03:11,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 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 21:03:11,890 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 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 21:03:11,890 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 64 flow. Second operand 6 states and 143 transitions. [2023-11-21 21:03:11,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 48 transitions, 182 flow [2023-11-21 21:03:11,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 48 transitions, 176 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 21:03:11,893 INFO L231 Difference]: Finished difference. Result has 39 places, 30 transitions, 94 flow [2023-11-21 21:03:11,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=94, PETRI_PLACES=39, PETRI_TRANSITIONS=30} [2023-11-21 21:03:11,894 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 2 predicate places. [2023-11-21 21:03:11,895 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 30 transitions, 94 flow [2023-11-21 21:03:11,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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 21:03:11,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:03:11,896 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:03:11,909 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04c7b8a-bd41-49b6-ad3a-b82dbb33fe7c/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 21:03:12,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04c7b8a-bd41-49b6-ad3a-b82dbb33fe7c/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 21:03:12,105 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (and 15 more)] === [2023-11-21 21:03:12,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:03:12,106 INFO L85 PathProgramCache]: Analyzing trace with hash -450462350, now seen corresponding path program 1 times [2023-11-21 21:03:12,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 21:03:12,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [650421087] [2023-11-21 21:03:12,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:03:12,106 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 21:03:12,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04c7b8a-bd41-49b6-ad3a-b82dbb33fe7c/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 21:03:12,107 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04c7b8a-bd41-49b6-ad3a-b82dbb33fe7c/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 21:03:12,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04c7b8a-bd41-49b6-ad3a-b82dbb33fe7c/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 21:03:12,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:03:12,203 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 21:03:12,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:03:12,266 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-11-21 21:03:12,267 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 21:03:12,267 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 18 remaining) [2023-11-21 21:03:12,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 18 remaining) [2023-11-21 21:03:12,270 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 18 remaining) [2023-11-21 21:03:12,270 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (14 of 18 remaining) [2023-11-21 21:03:12,270 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 18 remaining) [2023-11-21 21:03:12,270 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 18 remaining) [2023-11-21 21:03:12,270 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE (11 of 18 remaining) [2023-11-21 21:03:12,271 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE (10 of 18 remaining) [2023-11-21 21:03:12,271 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE (9 of 18 remaining) [2023-11-21 21:03:12,271 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2023-11-21 21:03:12,271 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 18 remaining) [2023-11-21 21:03:12,271 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 18 remaining) [2023-11-21 21:03:12,272 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 18 remaining) [2023-11-21 21:03:12,272 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 18 remaining) [2023-11-21 21:03:12,272 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 18 remaining) [2023-11-21 21:03:12,272 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 18 remaining) [2023-11-21 21:03:12,272 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 18 remaining) [2023-11-21 21:03:12,273 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 18 remaining) [2023-11-21 21:03:12,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04c7b8a-bd41-49b6-ad3a-b82dbb33fe7c/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 21:03:12,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04c7b8a-bd41-49b6-ad3a-b82dbb33fe7c/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 21:03:12,473 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:03:12,479 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-21 21:03:12,480 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-21 21:03:12,498 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre6 could not be translated [2023-11-21 21:03:12,506 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 09:03:12 BasicIcfg [2023-11-21 21:03:12,506 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-21 21:03:12,507 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 21:03:12,507 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 21:03:12,507 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 21:03:12,507 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:03:06" (3/4) ... [2023-11-21 21:03:12,508 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-21 21:03:12,516 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre6 could not be translated [2023-11-21 21:03:12,557 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04c7b8a-bd41-49b6-ad3a-b82dbb33fe7c/bin/uautomizer-verify-bycVGegfSx/witness.graphml [2023-11-21 21:03:12,557 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 21:03:12,558 INFO L158 Benchmark]: Toolchain (without parser) took 8928.14ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 72.7MB in the beginning and 74.4MB in the end (delta: -1.7MB). Peak memory consumption was 20.9MB. Max. memory is 16.1GB. [2023-11-21 21:03:12,561 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 75.5MB. Free memory is still 51.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 21:03:12,561 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1343.75ms. Allocated memory is still 98.6MB. Free memory was 72.5MB in the beginning and 64.2MB in the end (delta: 8.3MB). Peak memory consumption was 26.2MB. Max. memory is 16.1GB. [2023-11-21 21:03:12,562 INFO L158 Benchmark]: Boogie Procedure Inliner took 73.50ms. Allocated memory is still 98.6MB. Free memory was 64.2MB in the beginning and 62.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 21:03:12,563 INFO L158 Benchmark]: Boogie Preprocessor took 65.25ms. Allocated memory is still 98.6MB. Free memory was 62.1MB in the beginning and 59.9MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 21:03:12,563 INFO L158 Benchmark]: RCFGBuilder took 1058.48ms. Allocated memory is still 98.6MB. Free memory was 59.9MB in the beginning and 65.7MB in the end (delta: -5.9MB). Peak memory consumption was 23.8MB. Max. memory is 16.1GB. [2023-11-21 21:03:12,563 INFO L158 Benchmark]: TraceAbstraction took 6325.20ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 65.2MB in the beginning and 77.6MB in the end (delta: -12.4MB). Peak memory consumption was 8.7MB. Max. memory is 16.1GB. [2023-11-21 21:03:12,564 INFO L158 Benchmark]: Witness Printer took 50.65ms. Allocated memory is still 119.5MB. Free memory was 77.6MB in the beginning and 74.4MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-21 21:03:12,569 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 75.5MB. Free memory is still 51.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1343.75ms. Allocated memory is still 98.6MB. Free memory was 72.5MB in the beginning and 64.2MB in the end (delta: 8.3MB). Peak memory consumption was 26.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 73.50ms. Allocated memory is still 98.6MB. Free memory was 64.2MB in the beginning and 62.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 65.25ms. Allocated memory is still 98.6MB. Free memory was 62.1MB in the beginning and 59.9MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1058.48ms. Allocated memory is still 98.6MB. Free memory was 59.9MB in the beginning and 65.7MB in the end (delta: -5.9MB). Peak memory consumption was 23.8MB. Max. memory is 16.1GB. * TraceAbstraction took 6325.20ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 65.2MB in the beginning and 77.6MB in the end (delta: -12.4MB). Peak memory consumption was 8.7MB. Max. memory is 16.1GB. * Witness Printer took 50.65ms. Allocated memory is still 119.5MB. Free memory was 77.6MB in the beginning and 74.4MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre6 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre6 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: -1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L1037] 0 int size; [L1038] 0 int ind; [L1039] 0 int j = 2, i = 1; [L1057] 0 size = __VERIFIER_nondet_int() [L1058] COND FALSE 0 !(size < 1 || size > 20) [L1061] 0 int *a = (int *)malloc(size); [L1062] 0 pthread_t id1, id2; [L1063] 0 ind = 0 [L1064] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, a) VAL [\old(argc)=5, a={1:0}, arg={1:0}, argc=5, argv={7:6}, i=1, id1={268435459:0}, id2={3:0}, ind=0, j=2, size=2] [L1041] 1 int *a = (int *)arg; VAL [a={1:0}, arg={1:0}, arg={1:0}, i=1, ind=0, j=2, size=2] [L1042] COND TRUE 1 ind < size - 1 [L1043] 1 ++ind VAL [a={1:0}, arg={1:0}, arg={1:0}, i=1, ind=1, j=2, size=2] [L1044] 1 a[ind] = i - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1056]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1066]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1066]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1066]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1065]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1064]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 47 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.1s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 266 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 152 mSDsluCounter, 23 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 372 IncrementalHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 15 mSDtfsCounter, 372 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=94occurred in iteration=6, InterpolantAutomatonStates: 21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 22 ConstructedInterpolants, 6 QuantifiedInterpolants, 307 SizeOfPredicates, 13 NumberOfNonLiveVariables, 263 ConjunctsInSsa, 27 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-11-21 21:03:12,604 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f04c7b8a-bd41-49b6-ad3a-b82dbb33fe7c/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)