./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0781ab42-4681-48f6-af4b-41668a8f12d2/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0781ab42-4681-48f6-af4b-41668a8f12d2/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0781ab42-4681-48f6-af4b-41668a8f12d2/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0781ab42-4681-48f6-af4b-41668a8f12d2/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0781ab42-4681-48f6-af4b-41668a8f12d2/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0781ab42-4681-48f6-af4b-41668a8f12d2/bin/uautomizer-verify-NlZe1sFDwI --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 37988a2d341c7c9f3fcf434d412d9132bef9023d4105c08959698de2759206e2 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 22:01:34,425 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 22:01:34,509 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0781ab42-4681-48f6-af4b-41668a8f12d2/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-24 22:01:34,515 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 22:01:34,516 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 22:01:34,543 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 22:01:34,544 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 22:01:34,545 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 22:01:34,545 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 22:01:34,546 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 22:01:34,547 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 22:01:34,547 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 22:01:34,548 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 22:01:34,549 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 22:01:34,549 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 22:01:34,550 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 22:01:34,551 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 22:01:34,551 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 22:01:34,552 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 22:01:34,553 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 22:01:34,553 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 22:01:34,554 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 22:01:34,555 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 22:01:34,555 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 22:01:34,556 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 22:01:34,556 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 22:01:34,557 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 22:01:34,557 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 22:01:34,558 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 22:01:34,559 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 22:01:34,559 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 22:01:34,560 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 22:01:34,560 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 22:01:34,561 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 22:01:34,562 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 22:01:34,562 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 22:01:34,563 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 22:01:34,563 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 22:01:34,564 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 22:01:34,564 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 22:01:34,565 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 22:01:34,566 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_0781ab42-4681-48f6-af4b-41668a8f12d2/bin/uautomizer-verify-NlZe1sFDwI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0781ab42-4681-48f6-af4b-41668a8f12d2/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 37988a2d341c7c9f3fcf434d412d9132bef9023d4105c08959698de2759206e2 [2023-11-24 22:01:34,893 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 22:01:34,930 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 22:01:34,933 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 22:01:34,936 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 22:01:34,937 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 22:01:34,938 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0781ab42-4681-48f6-af4b-41668a8f12d2/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c [2023-11-24 22:01:38,135 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 22:01:38,354 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 22:01:38,358 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0781ab42-4681-48f6-af4b-41668a8f12d2/sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c [2023-11-24 22:01:38,368 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0781ab42-4681-48f6-af4b-41668a8f12d2/bin/uautomizer-verify-NlZe1sFDwI/data/f991cb21f/6edef5ffba334e73a06e708a625e68eb/FLAG1e4138455 [2023-11-24 22:01:38,385 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0781ab42-4681-48f6-af4b-41668a8f12d2/bin/uautomizer-verify-NlZe1sFDwI/data/f991cb21f/6edef5ffba334e73a06e708a625e68eb [2023-11-24 22:01:38,392 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 22:01:38,395 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 22:01:38,398 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 22:01:38,398 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 22:01:38,403 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 22:01:38,404 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:01:38" (1/1) ... [2023-11-24 22:01:38,405 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71c571da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:01:38, skipping insertion in model container [2023-11-24 22:01:38,405 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:01:38" (1/1) ... [2023-11-24 22:01:38,435 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 22:01:38,667 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:01:38,681 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) [2023-11-24 22:01:38,681 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@157eedb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:01:38, skipping insertion in model container [2023-11-24 22:01:38,682 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 22:01:38,682 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-24 22:01:38,689 INFO L158 Benchmark]: Toolchain (without parser) took 288.22ms. Allocated memory is still 123.7MB. Free memory was 88.2MB in the beginning and 97.1MB in the end (delta: -8.9MB). Peak memory consumption was 11.3MB. Max. memory is 16.1GB. [2023-11-24 22:01:38,704 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 123.7MB. Free memory is still 93.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 22:01:38,705 INFO L158 Benchmark]: CACSL2BoogieTranslator took 284.28ms. Allocated memory is still 123.7MB. Free memory was 88.2MB in the beginning and 97.4MB in the end (delta: -9.2MB). Peak memory consumption was 11.3MB. Max. memory is 16.1GB. [2023-11-24 22:01:38,707 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 93.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 284.28ms. Allocated memory is still 123.7MB. Free memory was 88.2MB in the beginning and 97.4MB in the end (delta: -9.2MB). Peak memory consumption was 11.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 115]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0781ab42-4681-48f6-af4b-41668a8f12d2/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0781ab42-4681-48f6-af4b-41668a8f12d2/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0781ab42-4681-48f6-af4b-41668a8f12d2/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0781ab42-4681-48f6-af4b-41668a8f12d2/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0781ab42-4681-48f6-af4b-41668a8f12d2/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0781ab42-4681-48f6-af4b-41668a8f12d2/bin/uautomizer-verify-NlZe1sFDwI --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 37988a2d341c7c9f3fcf434d412d9132bef9023d4105c08959698de2759206e2 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 22:01:41,346 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 22:01:41,486 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0781ab42-4681-48f6-af4b-41668a8f12d2/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-24 22:01:41,512 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 22:01:41,512 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 22:01:41,563 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 22:01:41,563 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 22:01:41,564 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 22:01:41,566 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 22:01:41,571 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 22:01:41,571 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 22:01:41,572 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 22:01:41,573 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 22:01:41,574 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 22:01:41,575 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 22:01:41,575 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 22:01:41,576 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 22:01:41,576 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 22:01:41,577 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 22:01:41,577 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 22:01:41,578 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 22:01:41,578 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 22:01:41,579 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 22:01:41,580 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 22:01:41,580 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 22:01:41,581 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-24 22:01:41,581 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-24 22:01:41,581 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 22:01:41,582 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 22:01:41,582 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 22:01:41,584 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 22:01:41,585 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 22:01:41,585 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 22:01:41,585 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 22:01:41,586 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 22:01:41,586 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 22:01:41,587 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 22:01:41,588 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-24 22:01:41,588 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-24 22:01:41,588 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 22:01:41,588 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 22:01:41,589 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 22:01:41,589 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 22:01:41,589 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-24 22:01:41,590 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_0781ab42-4681-48f6-af4b-41668a8f12d2/bin/uautomizer-verify-NlZe1sFDwI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0781ab42-4681-48f6-af4b-41668a8f12d2/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 37988a2d341c7c9f3fcf434d412d9132bef9023d4105c08959698de2759206e2 [2023-11-24 22:01:42,070 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 22:01:42,096 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 22:01:42,101 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 22:01:42,102 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 22:01:42,103 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 22:01:42,105 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0781ab42-4681-48f6-af4b-41668a8f12d2/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c [2023-11-24 22:01:45,321 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 22:01:45,613 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 22:01:45,614 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0781ab42-4681-48f6-af4b-41668a8f12d2/sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c [2023-11-24 22:01:45,622 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0781ab42-4681-48f6-af4b-41668a8f12d2/bin/uautomizer-verify-NlZe1sFDwI/data/a7148173d/34d9e5b9289d425d9c886a8a90c3b000/FLAGb877d50c2 [2023-11-24 22:01:45,637 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0781ab42-4681-48f6-af4b-41668a8f12d2/bin/uautomizer-verify-NlZe1sFDwI/data/a7148173d/34d9e5b9289d425d9c886a8a90c3b000 [2023-11-24 22:01:45,640 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 22:01:45,642 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 22:01:45,643 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 22:01:45,644 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 22:01:45,652 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 22:01:45,653 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:01:45" (1/1) ... [2023-11-24 22:01:45,654 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dfb2313 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:01:45, skipping insertion in model container [2023-11-24 22:01:45,654 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:01:45" (1/1) ... [2023-11-24 22:01:45,685 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 22:01:45,970 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:01:45,986 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-24 22:01:45,992 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 22:01:46,017 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:01:46,027 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 22:01:46,072 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:01:46,102 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 22:01:46,103 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 22:01:46,111 INFO L206 MainTranslator]: Completed translation [2023-11-24 22:01:46,112 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:01:46 WrapperNode [2023-11-24 22:01:46,112 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 22:01:46,113 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 22:01:46,114 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 22:01:46,114 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 22:01:46,123 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:01:46" (1/1) ... [2023-11-24 22:01:46,153 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:01:46" (1/1) ... [2023-11-24 22:01:46,220 INFO L138 Inliner]: procedures = 27, calls = 59, calls flagged for inlining = 17, calls inlined = 29, statements flattened = 283 [2023-11-24 22:01:46,221 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 22:01:46,222 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 22:01:46,222 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 22:01:46,222 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 22:01:46,262 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:01:46" (1/1) ... [2023-11-24 22:01:46,276 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:01:46" (1/1) ... [2023-11-24 22:01:46,282 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:01:46" (1/1) ... [2023-11-24 22:01:46,339 INFO L175 MemorySlicer]: Split 16 memory accesses to 5 slices as follows [2, 2, 2, 2, 8]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 5 writes are split as follows [0, 1, 1, 1, 2]. [2023-11-24 22:01:46,340 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:01:46" (1/1) ... [2023-11-24 22:01:46,340 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:01:46" (1/1) ... [2023-11-24 22:01:46,355 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:01:46" (1/1) ... [2023-11-24 22:01:46,371 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:01:46" (1/1) ... [2023-11-24 22:01:46,374 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:01:46" (1/1) ... [2023-11-24 22:01:46,377 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:01:46" (1/1) ... [2023-11-24 22:01:46,383 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 22:01:46,384 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 22:01:46,384 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 22:01:46,384 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 22:01:46,385 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:01:46" (1/1) ... [2023-11-24 22:01:46,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 22:01:46,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0781ab42-4681-48f6-af4b-41668a8f12d2/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 22:01:46,425 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0781ab42-4681-48f6-af4b-41668a8f12d2/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 22:01:46,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0781ab42-4681-48f6-af4b-41668a8f12d2/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 22:01:46,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 22:01:46,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-24 22:01:46,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-24 22:01:46,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-11-24 22:01:46,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-11-24 22:01:46,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-11-24 22:01:46,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 22:01:46,484 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-11-24 22:01:46,484 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-11-24 22:01:46,484 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-11-24 22:01:46,484 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-11-24 22:01:46,485 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2023-11-24 22:01:46,485 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-24 22:01:46,485 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-24 22:01:46,486 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-24 22:01:46,487 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-24 22:01:46,487 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-24 22:01:46,487 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-24 22:01:46,487 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-24 22:01:46,487 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-24 22:01:46,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 22:01:46,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 22:01:46,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 22:01:46,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 22:01:46,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-24 22:01:46,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-11-24 22:01:46,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-11-24 22:01:46,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-11-24 22:01:46,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2023-11-24 22:01:46,493 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-24 22:01:46,695 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 22:01:46,698 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 22:01:47,648 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 22:01:48,271 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 22:01:48,271 INFO L309 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-24 22:01:48,272 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:01:48 BoogieIcfgContainer [2023-11-24 22:01:48,273 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 22:01:48,275 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 22:01:48,275 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 22:01:48,279 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 22:01:48,279 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 10:01:45" (1/3) ... [2023-11-24 22:01:48,280 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b143402 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 10:01:48, skipping insertion in model container [2023-11-24 22:01:48,280 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:01:46" (2/3) ... [2023-11-24 22:01:48,282 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b143402 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 10:01:48, skipping insertion in model container [2023-11-24 22:01:48,283 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:01:48" (3/3) ... [2023-11-24 22:01:48,284 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum.wvr.c [2023-11-24 22:01:48,305 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 22:01:48,305 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2023-11-24 22:01:48,306 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-24 22:01:48,411 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-24 22:01:48,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 78 transitions, 177 flow [2023-11-24 22:01:48,493 INFO L124 PetriNetUnfolderBase]: 5/75 cut-off events. [2023-11-24 22:01:48,493 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-24 22:01:48,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 75 events. 5/75 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 170 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 48. Up to 2 conditions per place. [2023-11-24 22:01:48,498 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 78 transitions, 177 flow [2023-11-24 22:01:48,502 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 74 transitions, 166 flow [2023-11-24 22:01:48,513 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 22:01:48,520 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;@6e4f6ad9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:01:48,520 INFO L358 AbstractCegarLoop]: Starting to check reachability of 45 error locations. [2023-11-24 22:01:48,543 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-24 22:01:48,543 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2023-11-24 22:01:48,543 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 22:01:48,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:01:48,544 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-24 22:01:48,545 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-11-24 22:01:48,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:01:48,553 INFO L85 PathProgramCache]: Analyzing trace with hash 919887, now seen corresponding path program 1 times [2023-11-24 22:01:48,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 22:01:48,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1823224319] [2023-11-24 22:01:48,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:01:48,571 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 [2023-11-24 22:01:48,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0781ab42-4681-48f6-af4b-41668a8f12d2/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 22:01:48,578 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0781ab42-4681-48f6-af4b-41668a8f12d2/bin/uautomizer-verify-NlZe1sFDwI/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) [2023-11-24 22:01:48,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0781ab42-4681-48f6-af4b-41668a8f12d2/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 22:01:48,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:01:48,700 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 22:01:48,705 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:01:48,807 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 [2023-11-24 22:01:48,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:01:48,837 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 [2023-11-24 22:01:48,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:01:48,851 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 6 treesize of output 1 [2023-11-24 22:01:48,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:01:48,861 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 [2023-11-24 22:01:48,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:01:48,875 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 [2023-11-24 22:01:48,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:01:48,882 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 [2023-11-24 22:01:48,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:01:48,915 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 [2023-11-24 22:01:48,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:01:48,946 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-24 22:01:48,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:01:48,967 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 [2023-11-24 22:01:48,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:01:48,979 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 [2023-11-24 22:01:48,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:01:48,999 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 [2023-11-24 22:01:49,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:01:49,009 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 [2023-11-24 22:01:49,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:01:49,020 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 [2023-11-24 22:01:49,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:01:49,029 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 [2023-11-24 22:01:49,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:01:49,041 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 [2023-11-24 22:01:49,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:01:49,047 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 [2023-11-24 22:01:49,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:01:49,076 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 [2023-11-24 22:01:49,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:01:49,092 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 [2023-11-24 22:01:49,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:01:49,118 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 [2023-11-24 22:01:49,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:01:49,126 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 [2023-11-24 22:01:49,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:01:49,140 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 [2023-11-24 22:01:49,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:01:49,148 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 [2023-11-24 22:01:49,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:01:49,178 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 [2023-11-24 22:01:49,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:01:49,201 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 [2023-11-24 22:01:49,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:01:49,216 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 22:01:49,217 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 22:01:49,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1823224319] [2023-11-24 22:01:49,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1823224319] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:01:49,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:01:49,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 22:01:49,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222873806] [2023-11-24 22:01:49,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:01:49,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:01:49,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 22:01:49,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:01:49,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:01:49,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 78 [2023-11-24 22:01:49,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 74 transitions, 166 flow. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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) [2023-11-24 22:01:49,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:01:49,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 78 [2023-11-24 22:01:49,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:01:50,951 INFO L124 PetriNetUnfolderBase]: 2971/6043 cut-off events. [2023-11-24 22:01:50,954 INFO L125 PetriNetUnfolderBase]: For 293/294 co-relation queries the response was YES. [2023-11-24 22:01:50,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10485 conditions, 6043 events. 2971/6043 cut-off events. For 293/294 co-relation queries the response was YES. Maximal size of possible extension queue 750. Compared 54239 event pairs, 2534 based on Foata normal form. 1/3084 useless extension candidates. Maximal degree in co-relation 9711. Up to 4213 conditions per place. [2023-11-24 22:01:51,035 INFO L140 encePairwiseOnDemand]: 73/78 looper letters, 39 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2023-11-24 22:01:51,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 70 transitions, 240 flow [2023-11-24 22:01:51,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:01:51,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 22:01:51,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 143 transitions. [2023-11-24 22:01:51,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2023-11-24 22:01:51,056 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 143 transitions. [2023-11-24 22:01:51,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 143 transitions. [2023-11-24 22:01:51,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:01:51,070 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 143 transitions. [2023-11-24 22:01:51,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 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) [2023-11-24 22:01:51,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 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) [2023-11-24 22:01:51,086 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 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) [2023-11-24 22:01:51,089 INFO L175 Difference]: Start difference. First operand has 79 places, 74 transitions, 166 flow. Second operand 3 states and 143 transitions. [2023-11-24 22:01:51,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 70 transitions, 240 flow [2023-11-24 22:01:51,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 70 transitions, 228 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-24 22:01:51,108 INFO L231 Difference]: Finished difference. Result has 71 places, 70 transitions, 150 flow [2023-11-24 22:01:51,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=71, PETRI_TRANSITIONS=70} [2023-11-24 22:01:51,116 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, -8 predicate places. [2023-11-24 22:01:51,116 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 70 transitions, 150 flow [2023-11-24 22:01:51,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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) [2023-11-24 22:01:51,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:01:51,117 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-24 22:01:51,131 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0781ab42-4681-48f6-af4b-41668a8f12d2/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 22:01:51,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0781ab42-4681-48f6-af4b-41668a8f12d2/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 22:01:51,320 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-11-24 22:01:51,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:01:51,321 INFO L85 PathProgramCache]: Analyzing trace with hash 919888, now seen corresponding path program 1 times [2023-11-24 22:01:51,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 22:01:51,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2054154252] [2023-11-24 22:01:51,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:01:51,322 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 [2023-11-24 22:01:51,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0781ab42-4681-48f6-af4b-41668a8f12d2/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 22:01:51,352 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0781ab42-4681-48f6-af4b-41668a8f12d2/bin/uautomizer-verify-NlZe1sFDwI/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) [2023-11-24 22:01:51,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0781ab42-4681-48f6-af4b-41668a8f12d2/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 22:01:51,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:01:51,460 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-24 22:01:51,462 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:01:51,511 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 13 treesize of output 7 [2023-11-24 22:01:51,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:01:51,526 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 8 treesize of output 1 [2023-11-24 22:01:51,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:01:51,542 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 8 treesize of output 1 [2023-11-24 22:01:51,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:01:51,566 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 13 treesize of output 1 [2023-11-24 22:01:51,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:01:51,596 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 18 treesize of output 1 [2023-11-24 22:01:51,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:01:51,611 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 13 treesize of output 1 [2023-11-24 22:01:51,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:01:51,636 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 13 treesize of output 1 [2023-11-24 22:01:51,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:01:51,660 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 18 treesize of output 1 [2023-11-24 22:01:51,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:01:51,697 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 18 treesize of output 1 [2023-11-24 22:01:51,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:01:51,714 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 13 treesize of output 1 [2023-11-24 22:01:51,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:01:51,758 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-24 22:01:51,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:01:51,819 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 18 treesize of output 1 [2023-11-24 22:01:51,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:01:51,855 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 13 treesize of output 1 [2023-11-24 22:01:51,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:01:51,882 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 18 treesize of output 1 [2023-11-24 22:01:51,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:01:51,895 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 8 treesize of output 1 [2023-11-24 22:01:51,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:01:51,911 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 13 treesize of output 1 [2023-11-24 22:01:51,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:01:51,928 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 13 treesize of output 1 [2023-11-24 22:01:51,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:01:51,938 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 8 treesize of output 1 [2023-11-24 22:01:51,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:01:51,967 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 13 treesize of output 1 [2023-11-24 22:01:51,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:01:51,978 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 8 treesize of output 1 [2023-11-24 22:01:51,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:01:52,002 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 13 treesize of output 1 [2023-11-24 22:01:52,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:01:52,012 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 8 treesize of output 1 [2023-11-24 22:01:52,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:01:52,041 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 18 treesize of output 1 [2023-11-24 22:01:52,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:01:52,059 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 13 treesize of output 1 [2023-11-24 22:01:52,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:01:52,176 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 22:01:52,176 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 22:01:52,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2054154252] [2023-11-24 22:01:52,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2054154252] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:01:52,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:01:52,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 22:01:52,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314032101] [2023-11-24 22:01:52,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:01:52,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 22:01:52,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 22:01:52,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 22:01:52,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 22:01:52,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 78 [2023-11-24 22:01:52,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 70 transitions, 150 flow. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 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) [2023-11-24 22:01:52,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:01:52,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 78 [2023-11-24 22:01:52,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:01:54,090 INFO L124 PetriNetUnfolderBase]: 2973/6049 cut-off events. [2023-11-24 22:01:54,090 INFO L125 PetriNetUnfolderBase]: For 73/74 co-relation queries the response was YES. [2023-11-24 22:01:54,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10354 conditions, 6049 events. 2973/6049 cut-off events. For 73/74 co-relation queries the response was YES. Maximal size of possible extension queue 750. Compared 54337 event pairs, 2534 based on Foata normal form. 0/3087 useless extension candidates. Maximal degree in co-relation 10318. Up to 4222 conditions per place. [2023-11-24 22:01:54,153 INFO L140 encePairwiseOnDemand]: 69/78 looper letters, 42 selfloop transitions, 7 changer transitions 0/76 dead transitions. [2023-11-24 22:01:54,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 76 transitions, 262 flow [2023-11-24 22:01:54,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 22:01:54,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-24 22:01:54,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 183 transitions. [2023-11-24 22:01:54,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5865384615384616 [2023-11-24 22:01:54,162 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 183 transitions. [2023-11-24 22:01:54,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 183 transitions. [2023-11-24 22:01:54,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:01:54,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 183 transitions. [2023-11-24 22:01:54,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 45.75) internal successors, (183), 4 states have internal predecessors, (183), 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) [2023-11-24 22:01:54,167 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 78.0) internal successors, (390), 5 states have internal predecessors, (390), 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) [2023-11-24 22:01:54,167 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 78.0) internal successors, (390), 5 states have internal predecessors, (390), 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) [2023-11-24 22:01:54,167 INFO L175 Difference]: Start difference. First operand has 71 places, 70 transitions, 150 flow. Second operand 4 states and 183 transitions. [2023-11-24 22:01:54,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 76 transitions, 262 flow [2023-11-24 22:01:54,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 76 transitions, 256 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 22:01:54,174 INFO L231 Difference]: Finished difference. Result has 75 places, 76 transitions, 202 flow [2023-11-24 22:01:54,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=202, PETRI_PLACES=75, PETRI_TRANSITIONS=76} [2023-11-24 22:01:54,177 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, -4 predicate places. [2023-11-24 22:01:54,180 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 76 transitions, 202 flow [2023-11-24 22:01:54,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 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) [2023-11-24 22:01:54,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:01:54,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-24 22:01:54,188 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0781ab42-4681-48f6-af4b-41668a8f12d2/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 22:01:54,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0781ab42-4681-48f6-af4b-41668a8f12d2/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 22:01:54,384 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-11-24 22:01:54,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:01:54,385 INFO L85 PathProgramCache]: Analyzing trace with hash 28520170, now seen corresponding path program 1 times [2023-11-24 22:01:54,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 22:01:54,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1672649599] [2023-11-24 22:01:54,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:01:54,390 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 [2023-11-24 22:01:54,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0781ab42-4681-48f6-af4b-41668a8f12d2/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 22:01:54,391 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0781ab42-4681-48f6-af4b-41668a8f12d2/bin/uautomizer-verify-NlZe1sFDwI/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) [2023-11-24 22:01:54,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0781ab42-4681-48f6-af4b-41668a8f12d2/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 22:01:54,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:01:54,509 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 22:01:54,510 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:01:54,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:01:54,556 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 22:01:54,556 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 22:01:54,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1672649599] [2023-11-24 22:01:54,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1672649599] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:01:54,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:01:54,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 22:01:54,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061850995] [2023-11-24 22:01:54,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:01:54,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 22:01:54,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 22:01:54,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 22:01:54,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 22:01:54,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 78 [2023-11-24 22:01:54,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 76 transitions, 202 flow. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 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) [2023-11-24 22:01:54,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:01:54,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 78 [2023-11-24 22:01:54,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:01:56,074 INFO L124 PetriNetUnfolderBase]: 2971/6048 cut-off events. [2023-11-24 22:01:56,074 INFO L125 PetriNetUnfolderBase]: For 74/75 co-relation queries the response was YES. [2023-11-24 22:01:56,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10369 conditions, 6048 events. 2971/6048 cut-off events. For 74/75 co-relation queries the response was YES. Maximal size of possible extension queue 750. Compared 54276 event pairs, 2534 based on Foata normal form. 3/3092 useless extension candidates. Maximal degree in co-relation 10329. Up to 4219 conditions per place. [2023-11-24 22:01:56,125 INFO L140 encePairwiseOnDemand]: 72/78 looper letters, 41 selfloop transitions, 4 changer transitions 1/75 dead transitions. [2023-11-24 22:01:56,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 75 transitions, 288 flow [2023-11-24 22:01:56,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 22:01:56,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-24 22:01:56,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 189 transitions. [2023-11-24 22:01:56,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6057692307692307 [2023-11-24 22:01:56,128 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 189 transitions. [2023-11-24 22:01:56,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 189 transitions. [2023-11-24 22:01:56,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:01:56,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 189 transitions. [2023-11-24 22:01:56,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 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) [2023-11-24 22:01:56,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 78.0) internal successors, (390), 5 states have internal predecessors, (390), 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) [2023-11-24 22:01:56,131 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 78.0) internal successors, (390), 5 states have internal predecessors, (390), 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) [2023-11-24 22:01:56,131 INFO L175 Difference]: Start difference. First operand has 75 places, 76 transitions, 202 flow. Second operand 4 states and 189 transitions. [2023-11-24 22:01:56,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 75 transitions, 288 flow [2023-11-24 22:01:56,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 75 transitions, 288 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-24 22:01:56,135 INFO L231 Difference]: Finished difference. Result has 79 places, 74 transitions, 202 flow [2023-11-24 22:01:56,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=202, PETRI_PLACES=79, PETRI_TRANSITIONS=74} [2023-11-24 22:01:56,136 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 0 predicate places. [2023-11-24 22:01:56,136 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 74 transitions, 202 flow [2023-11-24 22:01:56,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 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) [2023-11-24 22:01:56,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:01:56,137 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2023-11-24 22:01:56,144 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0781ab42-4681-48f6-af4b-41668a8f12d2/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 22:01:56,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0781ab42-4681-48f6-af4b-41668a8f12d2/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 22:01:56,340 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-11-24 22:01:56,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:01:56,341 INFO L85 PathProgramCache]: Analyzing trace with hash 884042370, now seen corresponding path program 1 times [2023-11-24 22:01:56,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 22:01:56,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [740352048] [2023-11-24 22:01:56,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:01:56,342 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 [2023-11-24 22:01:56,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0781ab42-4681-48f6-af4b-41668a8f12d2/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 22:01:56,343 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0781ab42-4681-48f6-af4b-41668a8f12d2/bin/uautomizer-verify-NlZe1sFDwI/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) [2023-11-24 22:01:56,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0781ab42-4681-48f6-af4b-41668a8f12d2/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 22:01:56,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:01:56,468 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-24 22:01:56,473 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:01:56,502 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 13 treesize of output 7 [2023-11-24 22:01:56,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:01:56,515 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 8 treesize of output 1 [2023-11-24 22:01:56,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:01:56,529 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 13 treesize of output 1 [2023-11-24 22:01:56,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:01:56,540 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 8 treesize of output 1 [2023-11-24 22:01:56,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:01:56,565 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 18 treesize of output 1 [2023-11-24 22:01:56,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:01:56,578 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 13 treesize of output 1 [2023-11-24 22:01:56,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:01:56,601 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 13 treesize of output 1 [2023-11-24 22:01:56,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:01:56,626 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 18 treesize of output 1 [2023-11-24 22:01:56,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:01:56,662 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 18 treesize of output 1 [2023-11-24 22:01:56,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:01:56,701 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-24 22:01:56,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:01:56,721 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 13 treesize of output 1 [2023-11-24 22:01:56,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:01:56,748 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 18 treesize of output 1 [2023-11-24 22:01:56,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:01:56,766 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 8 treesize of output 1 [2023-11-24 22:01:56,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:01:56,779 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 13 treesize of output 1 [2023-11-24 22:01:56,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:01:56,800 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 13 treesize of output 1 [2023-11-24 22:01:56,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:01:56,813 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 8 treesize of output 1 [2023-11-24 22:01:56,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:01:56,829 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 13 treesize of output 1 [2023-11-24 22:01:56,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:01:56,857 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 18 treesize of output 1 [2023-11-24 22:01:56,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:01:56,874 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 13 treesize of output 1 [2023-11-24 22:01:56,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:01:56,883 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 8 treesize of output 1 [2023-11-24 22:01:56,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:01:56,915 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 18 treesize of output 1 [2023-11-24 22:01:56,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:01:56,930 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 13 treesize of output 1 [2023-11-24 22:01:56,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:01:56,940 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 8 treesize of output 1 [2023-11-24 22:01:56,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:01:56,952 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 13 treesize of output 1 [2023-11-24 22:01:57,148 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:01:57,149 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 22:01:57,642 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:01:57,642 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 22:01:57,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [740352048] [2023-11-24 22:01:57,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [740352048] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 22:01:57,643 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-24 22:01:57,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-11-24 22:01:57,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806375283] [2023-11-24 22:01:57,643 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-24 22:01:57,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-24 22:01:57,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 22:01:57,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-24 22:01:57,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-11-24 22:01:58,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 78 [2023-11-24 22:01:58,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 74 transitions, 202 flow. Second operand has 10 states, 10 states have (on average 34.0) internal successors, (340), 10 states have internal predecessors, (340), 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) [2023-11-24 22:01:58,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:01:58,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 78 [2023-11-24 22:01:58,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:02:00,519 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 22:02:02,345 INFO L124 PetriNetUnfolderBase]: 2977/6065 cut-off events. [2023-11-24 22:02:02,345 INFO L125 PetriNetUnfolderBase]: For 85/86 co-relation queries the response was YES. [2023-11-24 22:02:02,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10435 conditions, 6065 events. 2977/6065 cut-off events. For 85/86 co-relation queries the response was YES. Maximal size of possible extension queue 750. Compared 54326 event pairs, 2534 based on Foata normal form. 0/3101 useless extension candidates. Maximal degree in co-relation 10362. Up to 4224 conditions per place. [2023-11-24 22:02:02,402 INFO L140 encePairwiseOnDemand]: 69/78 looper letters, 41 selfloop transitions, 24 changer transitions 0/92 dead transitions. [2023-11-24 22:02:02,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 92 transitions, 416 flow [2023-11-24 22:02:02,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-24 22:02:02,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-24 22:02:02,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 401 transitions. [2023-11-24 22:02:02,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.514102564102564 [2023-11-24 22:02:02,406 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 401 transitions. [2023-11-24 22:02:02,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 401 transitions. [2023-11-24 22:02:02,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:02:02,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 401 transitions. [2023-11-24 22:02:02,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 40.1) internal successors, (401), 10 states have internal predecessors, (401), 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) [2023-11-24 22:02:02,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 78.0) internal successors, (858), 11 states have internal predecessors, (858), 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) [2023-11-24 22:02:02,413 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 78.0) internal successors, (858), 11 states have internal predecessors, (858), 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) [2023-11-24 22:02:02,413 INFO L175 Difference]: Start difference. First operand has 79 places, 74 transitions, 202 flow. Second operand 10 states and 401 transitions. [2023-11-24 22:02:02,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 92 transitions, 416 flow [2023-11-24 22:02:02,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 92 transitions, 393 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-11-24 22:02:02,420 INFO L231 Difference]: Finished difference. Result has 86 places, 92 transitions, 345 flow [2023-11-24 22:02:02,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=345, PETRI_PLACES=86, PETRI_TRANSITIONS=92} [2023-11-24 22:02:02,423 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 7 predicate places. [2023-11-24 22:02:02,423 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 92 transitions, 345 flow [2023-11-24 22:02:02,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 34.0) internal successors, (340), 10 states have internal predecessors, (340), 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) [2023-11-24 22:02:02,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:02:02,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:02:02,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0781ab42-4681-48f6-af4b-41668a8f12d2/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 22:02:02,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0781ab42-4681-48f6-af4b-41668a8f12d2/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 22:02:02,628 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-11-24 22:02:02,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:02:02,629 INFO L85 PathProgramCache]: Analyzing trace with hash -229717711, now seen corresponding path program 1 times [2023-11-24 22:02:02,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 22:02:02,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [60624897] [2023-11-24 22:02:02,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:02:02,630 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 [2023-11-24 22:02:02,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0781ab42-4681-48f6-af4b-41668a8f12d2/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 22:02:02,631 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0781ab42-4681-48f6-af4b-41668a8f12d2/bin/uautomizer-verify-NlZe1sFDwI/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) [2023-11-24 22:02:02,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0781ab42-4681-48f6-af4b-41668a8f12d2/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 22:02:02,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:02:02,801 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-24 22:02:02,803 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:02:02,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:02:02,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:02:02,880 INFO L349 Elim1Store]: treesize reduction 44, result has 25.4 percent of original size [2023-11-24 22:02:02,880 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 29 [2023-11-24 22:02:02,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:02:02,989 INFO L349 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2023-11-24 22:02:02,990 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 42 treesize of output 37 [2023-11-24 22:02:03,274 INFO L349 Elim1Store]: treesize reduction 28, result has 50.9 percent of original size [2023-11-24 22:02:03,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 75 [2023-11-24 22:02:03,842 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 22:02:03,842 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 22:02:03,843 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 22:02:03,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [60624897] [2023-11-24 22:02:03,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [60624897] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:02:03,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:02:03,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 22:02:03,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514855115] [2023-11-24 22:02:03,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:02:03,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:02:03,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 22:02:03,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:02:03,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:02:03,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 78 [2023-11-24 22:02:03,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 92 transitions, 345 flow. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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) [2023-11-24 22:02:03,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:02:03,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 78 [2023-11-24 22:02:03,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:02:05,098 INFO L124 PetriNetUnfolderBase]: 2977/5616 cut-off events. [2023-11-24 22:02:05,099 INFO L125 PetriNetUnfolderBase]: For 94/95 co-relation queries the response was YES. [2023-11-24 22:02:05,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10014 conditions, 5616 events. 2977/5616 cut-off events. For 94/95 co-relation queries the response was YES. Maximal size of possible extension queue 665. Compared 45940 event pairs, 2534 based on Foata normal form. 513/3619 useless extension candidates. Maximal degree in co-relation 9953. Up to 4240 conditions per place. [2023-11-24 22:02:05,154 INFO L140 encePairwiseOnDemand]: 75/78 looper letters, 62 selfloop transitions, 1 changer transitions 0/90 dead transitions. [2023-11-24 22:02:05,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 90 transitions, 467 flow [2023-11-24 22:02:05,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:02:05,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 22:02:05,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 142 transitions. [2023-11-24 22:02:05,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6068376068376068 [2023-11-24 22:02:05,156 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 142 transitions. [2023-11-24 22:02:05,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 142 transitions. [2023-11-24 22:02:05,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:02:05,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 142 transitions. [2023-11-24 22:02:05,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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) [2023-11-24 22:02:05,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 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) [2023-11-24 22:02:05,159 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 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) [2023-11-24 22:02:05,160 INFO L175 Difference]: Start difference. First operand has 86 places, 92 transitions, 345 flow. Second operand 3 states and 142 transitions. [2023-11-24 22:02:05,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 90 transitions, 467 flow [2023-11-24 22:02:05,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 90 transitions, 406 flow, removed 18 selfloop flow, removed 4 redundant places. [2023-11-24 22:02:05,165 INFO L231 Difference]: Finished difference. Result has 82 places, 90 transitions, 282 flow [2023-11-24 22:02:05,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=282, PETRI_PLACES=82, PETRI_TRANSITIONS=90} [2023-11-24 22:02:05,166 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 3 predicate places. [2023-11-24 22:02:05,167 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 90 transitions, 282 flow [2023-11-24 22:02:05,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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) [2023-11-24 22:02:05,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:02:05,167 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:02:05,172 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0781ab42-4681-48f6-af4b-41668a8f12d2/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 22:02:05,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0781ab42-4681-48f6-af4b-41668a8f12d2/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 22:02:05,371 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-11-24 22:02:05,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:02:05,373 INFO L85 PathProgramCache]: Analyzing trace with hash -229717710, now seen corresponding path program 1 times [2023-11-24 22:02:05,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 22:02:05,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [274363073] [2023-11-24 22:02:05,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:02:05,374 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 [2023-11-24 22:02:05,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0781ab42-4681-48f6-af4b-41668a8f12d2/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 22:02:05,376 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0781ab42-4681-48f6-af4b-41668a8f12d2/bin/uautomizer-verify-NlZe1sFDwI/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) [2023-11-24 22:02:05,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0781ab42-4681-48f6-af4b-41668a8f12d2/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 22:02:05,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:02:05,577 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-24 22:02:05,580 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:02:05,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:02:05,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:02:05,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:02:05,651 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 18 [2023-11-24 22:02:05,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:02:05,687 INFO L349 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-11-24 22:02:05,687 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 15 [2023-11-24 22:02:05,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:02:05,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:02:05,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:02:05,827 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-24 22:02:05,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 22 [2023-11-24 22:02:05,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:02:05,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2023-11-24 22:02:07,074 INFO L349 Elim1Store]: treesize reduction 52, result has 60.9 percent of original size [2023-11-24 22:02:07,075 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 61 treesize of output 130