./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23addc1e-5d96-4390-820f-00c7d9c69ef1/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23addc1e-5d96-4390-820f-00c7d9c69ef1/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23addc1e-5d96-4390-820f-00c7d9c69ef1/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23addc1e-5d96-4390-820f-00c7d9c69ef1/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23addc1e-5d96-4390-820f-00c7d9c69ef1/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23addc1e-5d96-4390-820f-00c7d9c69ef1/bin/uautomizer-verify-uCwYo4JHxu --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 dbd0a32f8466e9a1ac86b6dfec2b7453fe6f40d8d953742d93d3d05c5ad7b7af --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:36:34,414 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:36:34,487 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23addc1e-5d96-4390-820f-00c7d9c69ef1/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-19 07:36:34,493 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:36:34,494 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:36:34,523 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:36:34,524 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:36:34,525 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:36:34,526 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:36:34,526 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:36:34,527 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:36:34,528 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:36:34,529 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:36:34,529 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:36:34,530 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:36:34,531 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:36:34,531 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:36:34,532 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:36:34,533 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:36:34,533 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:36:34,534 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:36:34,535 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:36:34,536 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:36:34,536 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:36:34,537 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:36:34,538 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:36:34,538 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:36:34,539 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:36:34,540 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:36:34,540 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:36:34,541 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:36:34,542 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:36:34,542 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:36:34,543 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:36:34,544 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:36:34,544 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:36:34,545 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:36:34,546 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:36:34,546 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_23addc1e-5d96-4390-820f-00c7d9c69ef1/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23addc1e-5d96-4390-820f-00c7d9c69ef1/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dbd0a32f8466e9a1ac86b6dfec2b7453fe6f40d8d953742d93d3d05c5ad7b7af [2023-11-19 07:36:34,875 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:36:34,914 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:36:34,918 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:36:34,919 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:36:34,920 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:36:34,922 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23addc1e-5d96-4390-820f-00c7d9c69ef1/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c [2023-11-19 07:36:38,213 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:36:38,424 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:36:38,425 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23addc1e-5d96-4390-820f-00c7d9c69ef1/sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c [2023-11-19 07:36:38,434 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23addc1e-5d96-4390-820f-00c7d9c69ef1/bin/uautomizer-verify-uCwYo4JHxu/data/73edb31c7/a11458f821f447e68a6bc78721fa5c6f/FLAG46d8f2781 [2023-11-19 07:36:38,447 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23addc1e-5d96-4390-820f-00c7d9c69ef1/bin/uautomizer-verify-uCwYo4JHxu/data/73edb31c7/a11458f821f447e68a6bc78721fa5c6f [2023-11-19 07:36:38,450 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:36:38,451 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:36:38,453 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:36:38,453 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:36:38,463 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:36:38,464 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:36:38" (1/1) ... [2023-11-19 07:36:38,467 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71f700ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:38, skipping insertion in model container [2023-11-19 07:36:38,468 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:36:38" (1/1) ... [2023-11-19 07:36:38,496 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:36:38,692 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:36:38,704 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) [2023-11-19 07:36:38,708 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@c721b09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:38, skipping insertion in model container [2023-11-19 07:36:38,708 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:36:38,709 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-19 07:36:38,711 INFO L158 Benchmark]: Toolchain (without parser) took 258.67ms. Allocated memory is still 151.0MB. Free memory was 104.2MB in the beginning and 93.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 07:36:38,712 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 151.0MB. Free memory is still 121.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:36:38,713 INFO L158 Benchmark]: CACSL2BoogieTranslator took 256.03ms. Allocated memory is still 151.0MB. Free memory was 103.8MB in the beginning and 93.8MB in the end (delta: 10.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-19 07:36:38,715 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 151.0MB. Free memory is still 121.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 256.03ms. Allocated memory is still 151.0MB. Free memory was 103.8MB in the beginning and 93.8MB in the end (delta: 10.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 107]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23addc1e-5d96-4390-820f-00c7d9c69ef1/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23addc1e-5d96-4390-820f-00c7d9c69ef1/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23addc1e-5d96-4390-820f-00c7d9c69ef1/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23addc1e-5d96-4390-820f-00c7d9c69ef1/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23addc1e-5d96-4390-820f-00c7d9c69ef1/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23addc1e-5d96-4390-820f-00c7d9c69ef1/bin/uautomizer-verify-uCwYo4JHxu --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 dbd0a32f8466e9a1ac86b6dfec2b7453fe6f40d8d953742d93d3d05c5ad7b7af --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:36:41,441 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:36:41,593 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23addc1e-5d96-4390-820f-00c7d9c69ef1/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-19 07:36:41,603 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:36:41,604 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:36:41,674 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:36:41,675 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:36:41,675 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:36:41,677 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:36:41,683 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:36:41,684 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:36:41,684 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:36:41,685 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:36:41,687 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:36:41,688 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:36:41,688 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:36:41,689 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:36:41,689 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:36:41,690 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:36:41,691 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:36:41,692 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:36:41,693 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:36:41,693 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:36:41,694 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 07:36:41,694 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 07:36:41,695 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:36:41,695 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:36:41,696 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:36:41,697 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:36:41,697 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:36:41,699 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:36:41,699 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:36:41,700 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:36:41,700 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:36:41,701 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-19 07:36:41,701 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 07:36:41,701 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:36:41,702 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:36:41,702 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:36:41,703 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-19 07:36:41,703 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:36:41,704 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_23addc1e-5d96-4390-820f-00c7d9c69ef1/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23addc1e-5d96-4390-820f-00c7d9c69ef1/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dbd0a32f8466e9a1ac86b6dfec2b7453fe6f40d8d953742d93d3d05c5ad7b7af [2023-11-19 07:36:42,200 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:36:42,236 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:36:42,240 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:36:42,241 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:36:42,242 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:36:42,244 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23addc1e-5d96-4390-820f-00c7d9c69ef1/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c [2023-11-19 07:36:45,493 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:36:45,784 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:36:45,788 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23addc1e-5d96-4390-820f-00c7d9c69ef1/sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c [2023-11-19 07:36:45,800 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23addc1e-5d96-4390-820f-00c7d9c69ef1/bin/uautomizer-verify-uCwYo4JHxu/data/b68ccc528/204dc8b551c64dccaf261dc12426790e/FLAG72219e5aa [2023-11-19 07:36:45,819 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23addc1e-5d96-4390-820f-00c7d9c69ef1/bin/uautomizer-verify-uCwYo4JHxu/data/b68ccc528/204dc8b551c64dccaf261dc12426790e [2023-11-19 07:36:45,826 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:36:45,827 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:36:45,831 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:36:45,832 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:36:45,837 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:36:45,838 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:36:45" (1/1) ... [2023-11-19 07:36:45,839 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@563dce9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:45, skipping insertion in model container [2023-11-19 07:36:45,840 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:36:45" (1/1) ... [2023-11-19 07:36:45,875 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:36:46,152 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:36:46,180 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-19 07:36:46,193 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:36:46,232 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:36:46,240 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:36:46,262 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:36:46,273 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:36:46,273 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:36:46,281 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:36:46,282 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:46 WrapperNode [2023-11-19 07:36:46,288 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:36:46,289 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:36:46,289 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:36:46,295 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:36:46,307 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:46" (1/1) ... [2023-11-19 07:36:46,334 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:46" (1/1) ... [2023-11-19 07:36:46,359 INFO L138 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 106 [2023-11-19 07:36:46,359 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:36:46,360 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:36:46,360 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:36:46,360 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:36:46,370 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:46" (1/1) ... [2023-11-19 07:36:46,371 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:46" (1/1) ... [2023-11-19 07:36:46,382 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:46" (1/1) ... [2023-11-19 07:36:46,382 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:46" (1/1) ... [2023-11-19 07:36:46,400 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:46" (1/1) ... [2023-11-19 07:36:46,416 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:46" (1/1) ... [2023-11-19 07:36:46,419 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:46" (1/1) ... [2023-11-19 07:36:46,421 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:46" (1/1) ... [2023-11-19 07:36:46,425 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:36:46,426 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:36:46,426 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:36:46,426 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:36:46,427 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:46" (1/1) ... [2023-11-19 07:36:46,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:36:46,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23addc1e-5d96-4390-820f-00c7d9c69ef1/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:46,467 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23addc1e-5d96-4390-820f-00c7d9c69ef1/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:36:46,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23addc1e-5d96-4390-820f-00c7d9c69ef1/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:36:46,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:36:46,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 07:36:46,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:36:46,509 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-19 07:36:46,509 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 07:36:46,509 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 07:36:46,509 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 07:36:46,509 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 07:36:46,510 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-19 07:36:46,511 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-19 07:36:46,511 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:36:46,511 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:36:46,512 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:36:46,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:36:46,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:36:46,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:36:46,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-19 07:36:46,515 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:36:46,709 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:36:46,713 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:36:47,428 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:36:47,614 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:36:47,614 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-19 07:36:47,623 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:36:47 BoogieIcfgContainer [2023-11-19 07:36:47,623 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:36:47,628 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:36:47,628 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:36:47,632 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:36:47,633 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:36:45" (1/3) ... [2023-11-19 07:36:47,635 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f2e45df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:36:47, skipping insertion in model container [2023-11-19 07:36:47,635 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:46" (2/3) ... [2023-11-19 07:36:47,637 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f2e45df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:36:47, skipping insertion in model container [2023-11-19 07:36:47,637 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:36:47" (3/3) ... [2023-11-19 07:36:47,639 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-min-le-max.wvr.c [2023-11-19 07:36:47,662 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:36:47,662 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2023-11-19 07:36:47,662 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:36:47,781 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-19 07:36:47,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 184 places, 184 transitions, 389 flow [2023-11-19 07:36:47,958 INFO L124 PetriNetUnfolderBase]: 10/181 cut-off events. [2023-11-19 07:36:47,959 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 07:36:47,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 194 conditions, 181 events. 10/181 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 214 event pairs, 0 based on Foata normal form. 0/143 useless extension candidates. Maximal degree in co-relation 137. Up to 2 conditions per place. [2023-11-19 07:36:47,969 INFO L82 GeneralOperation]: Start removeDead. Operand has 184 places, 184 transitions, 389 flow [2023-11-19 07:36:47,982 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 176 places, 176 transitions, 370 flow [2023-11-19 07:36:47,988 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:36:48,000 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 176 places, 176 transitions, 370 flow [2023-11-19 07:36:48,011 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 176 places, 176 transitions, 370 flow [2023-11-19 07:36:48,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 176 places, 176 transitions, 370 flow [2023-11-19 07:36:48,090 INFO L124 PetriNetUnfolderBase]: 10/176 cut-off events. [2023-11-19 07:36:48,093 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 07:36:48,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 189 conditions, 176 events. 10/176 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 213 event pairs, 0 based on Foata normal form. 0/139 useless extension candidates. Maximal degree in co-relation 137. Up to 2 conditions per place. [2023-11-19 07:36:48,102 INFO L119 LiptonReduction]: Number of co-enabled transitions 2136 [2023-11-19 07:37:18,026 INFO L134 LiptonReduction]: Checked pairs total: 2737 [2023-11-19 07:37:18,027 INFO L136 LiptonReduction]: Total number of compositions: 188 [2023-11-19 07:37:18,043 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:37:18,051 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;@153315fb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:37:18,051 INFO L358 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2023-11-19 07:37:18,055 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:37:18,055 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-19 07:37:18,055 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:37:18,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:37:18,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:37:18,057 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2023-11-19 07:37:18,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:18,063 INFO L85 PathProgramCache]: Analyzing trace with hash 23332, now seen corresponding path program 1 times [2023-11-19 07:37:18,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:37:18,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1552557158] [2023-11-19 07:37:18,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:18,078 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 [2023-11-19 07:37:18,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23addc1e-5d96-4390-820f-00c7d9c69ef1/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:37:18,083 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23addc1e-5d96-4390-820f-00c7d9c69ef1/bin/uautomizer-verify-uCwYo4JHxu/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) [2023-11-19 07:37:18,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23addc1e-5d96-4390-820f-00c7d9c69ef1/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 07:37:18,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:18,233 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:37:18,241 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:18,378 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 [2023-11-19 07:37:18,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:18,398 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 [2023-11-19 07:37:18,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:18,442 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 [2023-11-19 07:37:18,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:18,458 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 [2023-11-19 07:37:18,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:18,474 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 [2023-11-19 07:37:18,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:18,491 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 [2023-11-19 07:37:18,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:18,527 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 [2023-11-19 07:37:18,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:18,557 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 [2023-11-19 07:37:18,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:18,582 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 [2023-11-19 07:37:18,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:18,598 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 [2023-11-19 07:37:18,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:18,616 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 [2023-11-19 07:37:18,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:18,629 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 [2023-11-19 07:37:18,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:18,650 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 [2023-11-19 07:37:18,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:18,660 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 [2023-11-19 07:37:18,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:18,679 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 [2023-11-19 07:37:18,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:18,704 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 [2023-11-19 07:37:18,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:18,720 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 [2023-11-19 07:37:18,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:18,730 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 [2023-11-19 07:37:18,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:18,768 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 [2023-11-19 07:37:18,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:18,785 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 [2023-11-19 07:37:18,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:18,805 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 [2023-11-19 07:37:18,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:18,834 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 [2023-11-19 07:37:18,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:18,865 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 [2023-11-19 07:37:18,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:18,902 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 [2023-11-19 07:37:18,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:37:18,924 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:37:18,925 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:37:18,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1552557158] [2023-11-19 07:37:18,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1552557158] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:18,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:18,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:37:18,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208483510] [2023-11-19 07:37:18,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:18,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:37:18,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:37:18,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:37:18,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:37:19,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 372 [2023-11-19 07:37:19,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 49 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 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) [2023-11-19 07:37:19,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:37:19,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 372 [2023-11-19 07:37:19,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:37:19,823 INFO L124 PetriNetUnfolderBase]: 738/1118 cut-off events. [2023-11-19 07:37:19,823 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2023-11-19 07:37:19,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2316 conditions, 1118 events. 738/1118 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 4270 event pairs, 603 based on Foata normal form. 0/528 useless extension candidates. Maximal degree in co-relation 2040. Up to 1117 conditions per place. [2023-11-19 07:37:19,839 INFO L140 encePairwiseOnDemand]: 357/372 looper letters, 42 selfloop transitions, 4 changer transitions 0/46 dead transitions. [2023-11-19 07:37:19,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 46 transitions, 202 flow [2023-11-19 07:37:19,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:37:19,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:37:19,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 512 transitions. [2023-11-19 07:37:19,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45878136200716846 [2023-11-19 07:37:19,866 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 512 transitions. [2023-11-19 07:37:19,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 512 transitions. [2023-11-19 07:37:19,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:37:19,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 512 transitions. [2023-11-19 07:37:19,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 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) [2023-11-19 07:37:19,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 372.0) internal successors, (1488), 4 states have internal predecessors, (1488), 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) [2023-11-19 07:37:19,884 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 372.0) internal successors, (1488), 4 states have internal predecessors, (1488), 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) [2023-11-19 07:37:19,886 INFO L175 Difference]: Start difference. First operand has 56 places, 49 transitions, 116 flow. Second operand 3 states and 512 transitions. [2023-11-19 07:37:19,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 46 transitions, 202 flow [2023-11-19 07:37:19,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 46 transitions, 190 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-19 07:37:19,895 INFO L231 Difference]: Finished difference. Result has 46 places, 45 transitions, 122 flow [2023-11-19 07:37:19,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=46, PETRI_TRANSITIONS=45} [2023-11-19 07:37:19,901 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -10 predicate places. [2023-11-19 07:37:19,902 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 45 transitions, 122 flow [2023-11-19 07:37:19,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 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) [2023-11-19 07:37:19,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:37:19,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:37:19,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23addc1e-5d96-4390-820f-00c7d9c69ef1/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 07:37:20,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23addc1e-5d96-4390-820f-00c7d9c69ef1/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 07:37:20,106 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2023-11-19 07:37:20,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:20,108 INFO L85 PathProgramCache]: Analyzing trace with hash 724884, now seen corresponding path program 1 times [2023-11-19 07:37:20,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:37:20,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1942774665] [2023-11-19 07:37:20,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:20,113 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 [2023-11-19 07:37:20,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23addc1e-5d96-4390-820f-00c7d9c69ef1/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:37:20,114 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23addc1e-5d96-4390-820f-00c7d9c69ef1/bin/uautomizer-verify-uCwYo4JHxu/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) [2023-11-19 07:37:20,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23addc1e-5d96-4390-820f-00c7d9c69ef1/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 07:37:20,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:20,200 INFO L262 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:37:20,203 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:20,230 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 [2023-11-19 07:37:20,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:20,239 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 [2023-11-19 07:37:20,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:20,247 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 [2023-11-19 07:37:20,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:20,255 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 [2023-11-19 07:37:20,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:20,277 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 [2023-11-19 07:37:20,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:20,286 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 [2023-11-19 07:37:20,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:20,300 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 [2023-11-19 07:37:20,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:20,310 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 [2023-11-19 07:37:20,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:20,329 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 [2023-11-19 07:37:20,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:20,345 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 [2023-11-19 07:37:20,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:20,358 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 [2023-11-19 07:37:20,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:20,382 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 [2023-11-19 07:37:20,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:20,397 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 [2023-11-19 07:37:20,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:20,414 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 [2023-11-19 07:37:20,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:20,447 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 [2023-11-19 07:37:20,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:20,466 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 [2023-11-19 07:37:20,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:20,486 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 [2023-11-19 07:37:20,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:20,496 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 [2023-11-19 07:37:20,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:20,507 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 [2023-11-19 07:37:20,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:20,513 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 [2023-11-19 07:37:20,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:20,524 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 [2023-11-19 07:37:20,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:20,541 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 [2023-11-19 07:37:20,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:20,548 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 [2023-11-19 07:37:20,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:20,556 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 [2023-11-19 07:37:20,564 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:37:20,564 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:37:20,565 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:37:20,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1942774665] [2023-11-19 07:37:20,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1942774665] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:20,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:20,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:37:20,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093933253] [2023-11-19 07:37:20,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:20,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:37:20,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:37:20,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:37:20,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:37:20,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 372 [2023-11-19 07:37:20,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 45 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 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) [2023-11-19 07:37:20,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:37:20,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 372 [2023-11-19 07:37:20,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:37:21,183 INFO L124 PetriNetUnfolderBase]: 737/1114 cut-off events. [2023-11-19 07:37:21,183 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:37:21,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2274 conditions, 1114 events. 737/1114 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 4251 event pairs, 603 based on Foata normal form. 2/530 useless extension candidates. Maximal degree in co-relation 2259. Up to 1111 conditions per place. [2023-11-19 07:37:21,193 INFO L140 encePairwiseOnDemand]: 365/372 looper letters, 36 selfloop transitions, 6 changer transitions 0/42 dead transitions. [2023-11-19 07:37:21,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 42 transitions, 195 flow [2023-11-19 07:37:21,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:37:21,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:37:21,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 498 transitions. [2023-11-19 07:37:21,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44623655913978494 [2023-11-19 07:37:21,197 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 498 transitions. [2023-11-19 07:37:21,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 498 transitions. [2023-11-19 07:37:21,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:37:21,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 498 transitions. [2023-11-19 07:37:21,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 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) [2023-11-19 07:37:21,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 372.0) internal successors, (1488), 4 states have internal predecessors, (1488), 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) [2023-11-19 07:37:21,205 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 372.0) internal successors, (1488), 4 states have internal predecessors, (1488), 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) [2023-11-19 07:37:21,206 INFO L175 Difference]: Start difference. First operand has 46 places, 45 transitions, 122 flow. Second operand 3 states and 498 transitions. [2023-11-19 07:37:21,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 42 transitions, 195 flow [2023-11-19 07:37:21,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 42 transitions, 190 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-19 07:37:21,209 INFO L231 Difference]: Finished difference. Result has 45 places, 42 transitions, 118 flow [2023-11-19 07:37:21,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=45, PETRI_TRANSITIONS=42} [2023-11-19 07:37:21,210 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -11 predicate places. [2023-11-19 07:37:21,210 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 42 transitions, 118 flow [2023-11-19 07:37:21,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 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) [2023-11-19 07:37:21,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:37:21,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:37:21,214 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23addc1e-5d96-4390-820f-00c7d9c69ef1/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 07:37:21,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23addc1e-5d96-4390-820f-00c7d9c69ef1/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 07:37:21,417 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2023-11-19 07:37:21,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:21,426 INFO L85 PathProgramCache]: Analyzing trace with hash 724889, now seen corresponding path program 1 times [2023-11-19 07:37:21,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:37:21,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [871981286] [2023-11-19 07:37:21,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:21,427 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 [2023-11-19 07:37:21,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23addc1e-5d96-4390-820f-00c7d9c69ef1/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:37:21,430 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23addc1e-5d96-4390-820f-00c7d9c69ef1/bin/uautomizer-verify-uCwYo4JHxu/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) [2023-11-19 07:37:21,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23addc1e-5d96-4390-820f-00c7d9c69ef1/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 07:37:21,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:21,531 INFO L262 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-19 07:37:21,533 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:21,566 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 [2023-11-19 07:37:21,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:21,597 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 [2023-11-19 07:37:21,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:21,628 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 [2023-11-19 07:37:21,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:21,668 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 [2023-11-19 07:37:21,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:21,695 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 [2023-11-19 07:37:21,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:21,709 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 [2023-11-19 07:37:21,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:21,726 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 [2023-11-19 07:37:21,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:21,735 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 [2023-11-19 07:37:21,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:21,750 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 [2023-11-19 07:37:21,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:21,758 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 [2023-11-19 07:37:21,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:21,774 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 [2023-11-19 07:37:21,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:21,796 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 [2023-11-19 07:37:21,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:21,815 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 [2023-11-19 07:37:21,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:21,828 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 [2023-11-19 07:37:21,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:21,854 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 [2023-11-19 07:37:21,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:21,867 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 [2023-11-19 07:37:21,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:21,881 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 [2023-11-19 07:37:21,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:21,890 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 [2023-11-19 07:37:21,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:21,906 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 [2023-11-19 07:37:21,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:21,915 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 [2023-11-19 07:37:21,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:21,930 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 [2023-11-19 07:37:21,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:21,955 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 [2023-11-19 07:37:21,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:21,965 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 [2023-11-19 07:37:21,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:21,978 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 [2023-11-19 07:37:22,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:37:22,008 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:37:22,008 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:37:22,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [871981286] [2023-11-19 07:37:22,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [871981286] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:22,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:22,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:37:22,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472717857] [2023-11-19 07:37:22,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:22,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:37:22,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:37:22,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:37:22,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:37:22,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 372 [2023-11-19 07:37:22,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 42 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 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) [2023-11-19 07:37:22,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:37:22,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 372 [2023-11-19 07:37:22,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:37:22,646 INFO L124 PetriNetUnfolderBase]: 736/1112 cut-off events. [2023-11-19 07:37:22,646 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:37:22,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2269 conditions, 1112 events. 736/1112 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 4257 event pairs, 603 based on Foata normal form. 1/530 useless extension candidates. Maximal degree in co-relation 2241. Up to 1109 conditions per place. [2023-11-19 07:37:22,664 INFO L140 encePairwiseOnDemand]: 367/372 looper letters, 36 selfloop transitions, 4 changer transitions 0/40 dead transitions. [2023-11-19 07:37:22,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 40 transitions, 186 flow [2023-11-19 07:37:22,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:37:22,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:37:22,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 493 transitions. [2023-11-19 07:37:22,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44175627240143367 [2023-11-19 07:37:22,667 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 493 transitions. [2023-11-19 07:37:22,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 493 transitions. [2023-11-19 07:37:22,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:37:22,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 493 transitions. [2023-11-19 07:37:22,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 164.33333333333334) internal successors, (493), 3 states have internal predecessors, (493), 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) [2023-11-19 07:37:22,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 372.0) internal successors, (1488), 4 states have internal predecessors, (1488), 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) [2023-11-19 07:37:22,675 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 372.0) internal successors, (1488), 4 states have internal predecessors, (1488), 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) [2023-11-19 07:37:22,675 INFO L175 Difference]: Start difference. First operand has 45 places, 42 transitions, 118 flow. Second operand 3 states and 493 transitions. [2023-11-19 07:37:22,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 40 transitions, 186 flow [2023-11-19 07:37:22,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 40 transitions, 178 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:37:22,678 INFO L231 Difference]: Finished difference. Result has 44 places, 40 transitions, 106 flow [2023-11-19 07:37:22,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=44, PETRI_TRANSITIONS=40} [2023-11-19 07:37:22,679 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -12 predicate places. [2023-11-19 07:37:22,680 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 40 transitions, 106 flow [2023-11-19 07:37:22,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 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) [2023-11-19 07:37:22,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:37:22,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:37:22,683 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23addc1e-5d96-4390-820f-00c7d9c69ef1/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 07:37:22,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23addc1e-5d96-4390-820f-00c7d9c69ef1/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 07:37:22,883 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2023-11-19 07:37:22,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:22,884 INFO L85 PathProgramCache]: Analyzing trace with hash 724831, now seen corresponding path program 1 times [2023-11-19 07:37:22,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:37:22,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1736031292] [2023-11-19 07:37:22,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:22,884 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:37:22,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23addc1e-5d96-4390-820f-00c7d9c69ef1/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:37:22,886 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23addc1e-5d96-4390-820f-00c7d9c69ef1/bin/uautomizer-verify-uCwYo4JHxu/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) [2023-11-19 07:37:22,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23addc1e-5d96-4390-820f-00c7d9c69ef1/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 07:37:22,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:22,956 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 07:37:22,958 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:22,981 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 [2023-11-19 07:37:22,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:22,994 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 [2023-11-19 07:37:23,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:23,010 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 [2023-11-19 07:37:23,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:23,035 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 [2023-11-19 07:37:23,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:23,049 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 [2023-11-19 07:37:23,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:23,062 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 [2023-11-19 07:37:23,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:23,082 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 [2023-11-19 07:37:23,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:23,090 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 [2023-11-19 07:37:23,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:23,106 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 [2023-11-19 07:37:23,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:23,129 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 [2023-11-19 07:37:23,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:23,142 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 [2023-11-19 07:37:23,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:23,155 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 [2023-11-19 07:37:23,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:23,201 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 [2023-11-19 07:37:23,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:23,228 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 [2023-11-19 07:37:23,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:23,262 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 [2023-11-19 07:37:23,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:23,276 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 [2023-11-19 07:37:23,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:23,292 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 [2023-11-19 07:37:23,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:23,315 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 [2023-11-19 07:37:23,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:23,327 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 [2023-11-19 07:37:23,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:23,340 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 [2023-11-19 07:37:23,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:23,366 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 [2023-11-19 07:37:23,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:23,380 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 [2023-11-19 07:37:23,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:23,390 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 [2023-11-19 07:37:23,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:23,404 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 [2023-11-19 07:37:23,480 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:37:23,480 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:37:23,719 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:37:23,719 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:37:23,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1736031292] [2023-11-19 07:37:23,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1736031292] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:37:23,719 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:37:23,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-11-19 07:37:23,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462783071] [2023-11-19 07:37:23,720 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:37:23,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:37:23,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:37:23,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:37:23,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:37:24,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 372 [2023-11-19 07:37:24,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 40 transitions, 106 flow. Second operand has 6 states, 6 states have (on average 147.0) internal successors, (882), 6 states have internal predecessors, (882), 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) [2023-11-19 07:37:24,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:37:24,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 372 [2023-11-19 07:37:24,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:37:25,649 INFO L124 PetriNetUnfolderBase]: 745/1124 cut-off events. [2023-11-19 07:37:25,649 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:37:25,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2314 conditions, 1124 events. 745/1124 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 4268 event pairs, 603 based on Foata normal form. 0/535 useless extension candidates. Maximal degree in co-relation 2241. Up to 1121 conditions per place. [2023-11-19 07:37:25,658 INFO L140 encePairwiseOnDemand]: 366/372 looper letters, 38 selfloop transitions, 14 changer transitions 0/52 dead transitions. [2023-11-19 07:37:25,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 52 transitions, 276 flow [2023-11-19 07:37:25,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:37:25,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:37:25,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 931 transitions. [2023-11-19 07:37:25,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4171146953405018 [2023-11-19 07:37:25,664 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 931 transitions. [2023-11-19 07:37:25,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 931 transitions. [2023-11-19 07:37:25,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:37:25,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 931 transitions. [2023-11-19 07:37:25,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 155.16666666666666) internal successors, (931), 6 states have internal predecessors, (931), 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) [2023-11-19 07:37:25,676 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 372.0) internal successors, (2604), 7 states have internal predecessors, (2604), 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) [2023-11-19 07:37:25,678 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 372.0) internal successors, (2604), 7 states have internal predecessors, (2604), 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) [2023-11-19 07:37:25,678 INFO L175 Difference]: Start difference. First operand has 44 places, 40 transitions, 106 flow. Second operand 6 states and 931 transitions. [2023-11-19 07:37:25,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 52 transitions, 276 flow [2023-11-19 07:37:25,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 52 transitions, 250 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:37:25,681 INFO L231 Difference]: Finished difference. Result has 50 places, 52 transitions, 203 flow [2023-11-19 07:37:25,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=203, PETRI_PLACES=50, PETRI_TRANSITIONS=52} [2023-11-19 07:37:25,683 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -6 predicate places. [2023-11-19 07:37:25,684 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 52 transitions, 203 flow [2023-11-19 07:37:25,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 147.0) internal successors, (882), 6 states have internal predecessors, (882), 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) [2023-11-19 07:37:25,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:37:25,685 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-11-19 07:37:25,693 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23addc1e-5d96-4390-820f-00c7d9c69ef1/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 07:37:25,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23addc1e-5d96-4390-820f-00c7d9c69ef1/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 07:37:25,888 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2023-11-19 07:37:25,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:25,888 INFO L85 PathProgramCache]: Analyzing trace with hash 22471355, now seen corresponding path program 1 times [2023-11-19 07:37:25,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:37:25,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1892696003] [2023-11-19 07:37:25,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:25,889 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 [2023-11-19 07:37:25,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23addc1e-5d96-4390-820f-00c7d9c69ef1/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:37:25,890 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23addc1e-5d96-4390-820f-00c7d9c69ef1/bin/uautomizer-verify-uCwYo4JHxu/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) [2023-11-19 07:37:25,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23addc1e-5d96-4390-820f-00c7d9c69ef1/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 07:37:26,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:26,037 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:37:26,039 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:26,078 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-19 07:37:26,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 22 [2023-11-19 07:37:26,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:26,121 INFO L349 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2023-11-19 07:37:26,122 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 1 case distinctions, treesize of input 33 treesize of output 29 [2023-11-19 07:37:26,155 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-19 07:37:26,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 22 [2023-11-19 07:37:26,195 INFO L349 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2023-11-19 07:37:26,196 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 22 [2023-11-19 07:37:26,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:26,242 INFO L349 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2023-11-19 07:37:26,242 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 1 case distinctions, treesize of input 33 treesize of output 29 [2023-11-19 07:37:26,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:26,301 INFO L349 Elim1Store]: treesize reduction 60, result has 10.4 percent of original size [2023-11-19 07:37:26,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 29 [2023-11-19 07:37:26,477 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 07:37:26,477 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:37:26,477 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:37:26,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1892696003] [2023-11-19 07:37:26,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1892696003] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:26,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:26,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:37:26,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279409191] [2023-11-19 07:37:26,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:26,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:37:26,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:37:26,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:37:26,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:37:26,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 372 [2023-11-19 07:37:26,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 52 transitions, 203 flow. Second operand has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 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) [2023-11-19 07:37:26,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:37:26,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 372 [2023-11-19 07:37:26,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:37:27,001 INFO L124 PetriNetUnfolderBase]: 617/945 cut-off events. [2023-11-19 07:37:27,001 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:37:27,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1968 conditions, 945 events. 617/945 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3494 event pairs, 498 based on Foata normal form. 0/469 useless extension candidates. Maximal degree in co-relation 1923. Up to 945 conditions per place. [2023-11-19 07:37:27,009 INFO L140 encePairwiseOnDemand]: 369/372 looper letters, 46 selfloop transitions, 1 changer transitions 0/47 dead transitions. [2023-11-19 07:37:27,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 47 transitions, 268 flow [2023-11-19 07:37:27,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:37:27,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:37:27,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 486 transitions. [2023-11-19 07:37:27,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43548387096774194 [2023-11-19 07:37:27,012 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 486 transitions. [2023-11-19 07:37:27,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 486 transitions. [2023-11-19 07:37:27,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:37:27,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 486 transitions. [2023-11-19 07:37:27,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 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) [2023-11-19 07:37:27,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 372.0) internal successors, (1488), 4 states have internal predecessors, (1488), 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) [2023-11-19 07:37:27,020 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 372.0) internal successors, (1488), 4 states have internal predecessors, (1488), 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) [2023-11-19 07:37:27,020 INFO L175 Difference]: Start difference. First operand has 50 places, 52 transitions, 203 flow. Second operand 3 states and 486 transitions. [2023-11-19 07:37:27,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 47 transitions, 268 flow [2023-11-19 07:37:27,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 47 transitions, 242 flow, removed 12 selfloop flow, removed 1 redundant places. [2023-11-19 07:37:27,032 INFO L231 Difference]: Finished difference. Result has 49 places, 47 transitions, 150 flow [2023-11-19 07:37:27,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=49, PETRI_TRANSITIONS=47} [2023-11-19 07:37:27,033 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -7 predicate places. [2023-11-19 07:37:27,033 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 47 transitions, 150 flow [2023-11-19 07:37:27,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 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) [2023-11-19 07:37:27,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:37:27,034 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:37:27,044 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23addc1e-5d96-4390-820f-00c7d9c69ef1/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 07:37:27,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23addc1e-5d96-4390-820f-00c7d9c69ef1/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 07:37:27,237 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2023-11-19 07:37:27,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:27,238 INFO L85 PathProgramCache]: Analyzing trace with hash 724887, now seen corresponding path program 1 times [2023-11-19 07:37:27,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:37:27,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [462797574] [2023-11-19 07:37:27,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:27,238 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 [2023-11-19 07:37:27,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23addc1e-5d96-4390-820f-00c7d9c69ef1/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:37:27,239 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23addc1e-5d96-4390-820f-00c7d9c69ef1/bin/uautomizer-verify-uCwYo4JHxu/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) [2023-11-19 07:37:27,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23addc1e-5d96-4390-820f-00c7d9c69ef1/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 07:37:27,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:27,362 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-19 07:37:27,364 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:27,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:27,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:27,473 INFO L349 Elim1Store]: treesize reduction 24, result has 44.2 percent of original size [2023-11-19 07:37:27,473 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 2 case distinctions, treesize of input 19 treesize of output 26 [2023-11-19 07:37:27,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:27,491 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 [2023-11-19 07:37:27,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:27,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:27,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:27,586 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 [2023-11-19 07:37:27,610 INFO L349 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-11-19 07:37:27,611 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 23 treesize of output 19 [2023-11-19 07:37:28,054 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:37:28,055 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:37:28,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:37:28,228 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:37:28,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [462797574] [2023-11-19 07:37:28,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [462797574] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:37:28,228 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:37:28,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-11-19 07:37:28,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353670181] [2023-11-19 07:37:28,228 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:37:28,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:37:28,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:37:28,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:37:28,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:37:29,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 372 [2023-11-19 07:37:29,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 47 transitions, 150 flow. Second operand has 6 states, 6 states have (on average 142.0) internal successors, (852), 6 states have internal predecessors, (852), 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) [2023-11-19 07:37:29,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:37:29,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 372 [2023-11-19 07:37:29,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:37:30,304 INFO L124 PetriNetUnfolderBase]: 614/942 cut-off events. [2023-11-19 07:37:30,304 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-19 07:37:30,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1945 conditions, 942 events. 614/942 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3500 event pairs, 498 based on Foata normal form. 0/470 useless extension candidates. Maximal degree in co-relation 1933. Up to 935 conditions per place. [2023-11-19 07:37:30,313 INFO L140 encePairwiseOnDemand]: 367/372 looper letters, 35 selfloop transitions, 9 changer transitions 0/44 dead transitions. [2023-11-19 07:37:30,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 44 transitions, 223 flow [2023-11-19 07:37:30,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:37:30,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:37:30,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 893 transitions. [2023-11-19 07:37:30,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40008960573476704 [2023-11-19 07:37:30,319 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 893 transitions. [2023-11-19 07:37:30,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 893 transitions. [2023-11-19 07:37:30,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:37:30,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 893 transitions. [2023-11-19 07:37:30,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 148.83333333333334) internal successors, (893), 6 states have internal predecessors, (893), 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) [2023-11-19 07:37:30,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 372.0) internal successors, (2604), 7 states have internal predecessors, (2604), 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) [2023-11-19 07:37:30,330 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 372.0) internal successors, (2604), 7 states have internal predecessors, (2604), 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) [2023-11-19 07:37:30,330 INFO L175 Difference]: Start difference. First operand has 49 places, 47 transitions, 150 flow. Second operand 6 states and 893 transitions. [2023-11-19 07:37:30,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 44 transitions, 223 flow [2023-11-19 07:37:30,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 44 transitions, 222 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:37:30,333 INFO L231 Difference]: Finished difference. Result has 53 places, 44 transitions, 152 flow [2023-11-19 07:37:30,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=152, PETRI_PLACES=53, PETRI_TRANSITIONS=44} [2023-11-19 07:37:30,334 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -3 predicate places. [2023-11-19 07:37:30,334 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 44 transitions, 152 flow [2023-11-19 07:37:30,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 142.0) internal successors, (852), 6 states have internal predecessors, (852), 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) [2023-11-19 07:37:30,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:37:30,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:37:30,344 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23addc1e-5d96-4390-820f-00c7d9c69ef1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:30,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23addc1e-5d96-4390-820f-00c7d9c69ef1/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 07:37:30,538 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2023-11-19 07:37:30,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:30,539 INFO L85 PathProgramCache]: Analyzing trace with hash 696628959, now seen corresponding path program 1 times [2023-11-19 07:37:30,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:37:30,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1951522095] [2023-11-19 07:37:30,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:30,539 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 [2023-11-19 07:37:30,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23addc1e-5d96-4390-820f-00c7d9c69ef1/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:37:30,540 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23addc1e-5d96-4390-820f-00c7d9c69ef1/bin/uautomizer-verify-uCwYo4JHxu/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) [2023-11-19 07:37:30,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23addc1e-5d96-4390-820f-00c7d9c69ef1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-19 07:37:30,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:30,683 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:37:30,685 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:30,712 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-19 07:37:30,713 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 22 [2023-11-19 07:37:30,753 INFO L349 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2023-11-19 07:37:30,754 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 22 [2023-11-19 07:37:30,790 INFO L349 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2023-11-19 07:37:30,791 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 1 case distinctions, treesize of input 22 treesize of output 22 [2023-11-19 07:37:30,817 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-19 07:37:30,817 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 22 [2023-11-19 07:37:30,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:30,880 INFO L349 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2023-11-19 07:37:30,880 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 22 [2023-11-19 07:37:30,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:30,917 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-19 07:37:30,917 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 22 [2023-11-19 07:37:30,948 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-19 07:37:30,948 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 22 [2023-11-19 07:37:30,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:30,987 INFO L349 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2023-11-19 07:37:30,987 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 22 [2023-11-19 07:37:31,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:37:31,245 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:37:31,245 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:37:31,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1951522095] [2023-11-19 07:37:31,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1951522095] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:31,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:31,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:37:31,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877270546] [2023-11-19 07:37:31,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:31,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:37:31,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:37:31,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:37:31,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:37:31,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 372 [2023-11-19 07:37:31,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 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) [2023-11-19 07:37:31,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:37:31,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 372 [2023-11-19 07:37:31,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:37:31,854 INFO L124 PetriNetUnfolderBase]: 594/907 cut-off events. [2023-11-19 07:37:31,854 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-19 07:37:31,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1884 conditions, 907 events. 594/907 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3345 event pairs, 481 based on Foata normal form. 0/460 useless extension candidates. Maximal degree in co-relation 1871. Up to 907 conditions per place. [2023-11-19 07:37:31,863 INFO L140 encePairwiseOnDemand]: 369/372 looper letters, 41 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2023-11-19 07:37:31,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 42 transitions, 232 flow [2023-11-19 07:37:31,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:37:31,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:37:31,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 484 transitions. [2023-11-19 07:37:31,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4336917562724014 [2023-11-19 07:37:31,867 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 484 transitions. [2023-11-19 07:37:31,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 484 transitions. [2023-11-19 07:37:31,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:37:31,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 484 transitions. [2023-11-19 07:37:31,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 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) [2023-11-19 07:37:31,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 372.0) internal successors, (1488), 4 states have internal predecessors, (1488), 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) [2023-11-19 07:37:31,873 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 372.0) internal successors, (1488), 4 states have internal predecessors, (1488), 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) [2023-11-19 07:37:31,873 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 152 flow. Second operand 3 states and 484 transitions. [2023-11-19 07:37:31,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 42 transitions, 232 flow [2023-11-19 07:37:31,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 42 transitions, 203 flow, removed 3 selfloop flow, removed 7 redundant places. [2023-11-19 07:37:31,876 INFO L231 Difference]: Finished difference. Result has 46 places, 42 transitions, 121 flow [2023-11-19 07:37:31,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=121, PETRI_PLACES=46, PETRI_TRANSITIONS=42} [2023-11-19 07:37:31,877 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -10 predicate places. [2023-11-19 07:37:31,877 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 42 transitions, 121 flow [2023-11-19 07:37:31,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 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) [2023-11-19 07:37:31,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:37:31,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:37:31,884 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23addc1e-5d96-4390-820f-00c7d9c69ef1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-11-19 07:37:32,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23addc1e-5d96-4390-820f-00c7d9c69ef1/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 07:37:32,081 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2023-11-19 07:37:32,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:32,081 INFO L85 PathProgramCache]: Analyzing trace with hash 696628960, now seen corresponding path program 1 times [2023-11-19 07:37:32,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:37:32,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [687091057] [2023-11-19 07:37:32,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:32,082 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 [2023-11-19 07:37:32,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23addc1e-5d96-4390-820f-00c7d9c69ef1/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:37:32,083 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23addc1e-5d96-4390-820f-00c7d9c69ef1/bin/uautomizer-verify-uCwYo4JHxu/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) [2023-11-19 07:37:32,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23addc1e-5d96-4390-820f-00c7d9c69ef1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-19 07:37:32,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:32,186 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-19 07:37:32,188 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:32,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:32,223 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 13 [2023-11-19 07:37:32,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:32,281 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-19 07:37:32,281 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 17 [2023-11-19 07:37:32,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:32,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:32,327 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 13 [2023-11-19 07:37:32,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:32,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:32,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:32,392 INFO L349 Elim1Store]: treesize reduction 9, result has 35.7 percent of original size [2023-11-19 07:37:32,392 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 1 case distinctions, treesize of input 16 treesize of output 13 [2023-11-19 07:37:32,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:32,404 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-19 07:37:32,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:32,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:32,465 INFO L349 Elim1Store]: treesize reduction 9, result has 35.7 percent of original size [2023-11-19 07:37:32,466 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 1 case distinctions, treesize of input 16 treesize of output 13 [2023-11-19 07:37:32,483 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-19 07:37:32,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:32,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:32,509 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 13 [2023-11-19 07:37:32,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:37:32,517 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3