./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa4f8ab-2389-4b93-bb0b-bb4d7cf38197/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa4f8ab-2389-4b93-bb0b-bb4d7cf38197/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa4f8ab-2389-4b93-bb0b-bb4d7cf38197/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa4f8ab-2389-4b93-bb0b-bb4d7cf38197/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa4f8ab-2389-4b93-bb0b-bb4d7cf38197/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa4f8ab-2389-4b93-bb0b-bb4d7cf38197/bin/uautomizer-verify-NlZe1sFDwI --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f41f3c018db74ffccd5759d166eb9816a1bf73b1747e3e539ecb5bf51feb56af --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:27:10,471 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:27:10,582 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa4f8ab-2389-4b93-bb0b-bb4d7cf38197/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-24 21:27:10,590 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:27:10,591 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:27:10,631 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:27:10,632 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:27:10,632 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:27:10,633 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:27:10,638 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:27:10,639 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:27:10,639 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:27:10,640 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:27:10,642 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:27:10,642 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:27:10,643 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:27:10,644 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:27:10,644 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:27:10,645 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:27:10,645 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:27:10,645 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 21:27:10,646 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 21:27:10,647 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 21:27:10,647 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:27:10,648 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 21:27:10,648 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 21:27:10,649 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:27:10,649 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:27:10,650 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:27:10,651 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:27:10,652 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:27:10,652 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:27:10,653 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:27:10,653 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:27:10,654 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:27:10,654 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:27:10,654 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:27:10,654 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:27:10,655 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:27:10,655 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:27:10,655 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:27:10,656 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_6fa4f8ab-2389-4b93-bb0b-bb4d7cf38197/bin/uautomizer-verify-NlZe1sFDwI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa4f8ab-2389-4b93-bb0b-bb4d7cf38197/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f41f3c018db74ffccd5759d166eb9816a1bf73b1747e3e539ecb5bf51feb56af [2023-11-24 21:27:10,938 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:27:10,958 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:27:10,961 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:27:10,962 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:27:10,963 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:27:10,964 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa4f8ab-2389-4b93-bb0b-bb4d7cf38197/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i [2023-11-24 21:27:14,031 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:27:14,377 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:27:14,377 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa4f8ab-2389-4b93-bb0b-bb4d7cf38197/sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i [2023-11-24 21:27:14,401 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa4f8ab-2389-4b93-bb0b-bb4d7cf38197/bin/uautomizer-verify-NlZe1sFDwI/data/9f32607fe/95f6a0b914da47ed997b953114eaa938/FLAGff1514d8d [2023-11-24 21:27:14,416 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa4f8ab-2389-4b93-bb0b-bb4d7cf38197/bin/uautomizer-verify-NlZe1sFDwI/data/9f32607fe/95f6a0b914da47ed997b953114eaa938 [2023-11-24 21:27:14,419 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:27:14,421 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:27:14,423 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:27:14,423 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:27:14,429 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:27:14,430 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:27:14" (1/1) ... [2023-11-24 21:27:14,431 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55b6239a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:27:14, skipping insertion in model container [2023-11-24 21:27:14,431 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:27:14" (1/1) ... [2023-11-24 21:27:14,522 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:27:15,093 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-24 21:27:15,094 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-24 21:27:15,094 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-24 21:27:15,095 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-24 21:27:15,150 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:27:15,180 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-11-24 21:27:15,181 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4a8f0c9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:27:15, skipping insertion in model container [2023-11-24 21:27:15,181 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:27:15,182 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-24 21:27:15,183 INFO L158 Benchmark]: Toolchain (without parser) took 761.54ms. Allocated memory is still 174.1MB. Free memory was 131.4MB in the beginning and 114.6MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-24 21:27:15,184 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 130.0MB. Free memory is still 76.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 21:27:15,185 INFO L158 Benchmark]: CACSL2BoogieTranslator took 758.82ms. Allocated memory is still 174.1MB. Free memory was 131.4MB in the beginning and 114.6MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-24 21:27:15,187 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 130.0MB. Free memory is still 76.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 758.82ms. Allocated memory is still 174.1MB. Free memory was 131.4MB in the beginning and 114.6MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1044]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa4f8ab-2389-4b93-bb0b-bb4d7cf38197/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa4f8ab-2389-4b93-bb0b-bb4d7cf38197/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa4f8ab-2389-4b93-bb0b-bb4d7cf38197/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa4f8ab-2389-4b93-bb0b-bb4d7cf38197/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa4f8ab-2389-4b93-bb0b-bb4d7cf38197/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa4f8ab-2389-4b93-bb0b-bb4d7cf38197/bin/uautomizer-verify-NlZe1sFDwI --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f41f3c018db74ffccd5759d166eb9816a1bf73b1747e3e539ecb5bf51feb56af --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:27:17,751 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:27:17,900 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa4f8ab-2389-4b93-bb0b-bb4d7cf38197/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-24 21:27:17,909 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:27:17,913 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:27:17,961 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:27:17,962 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:27:17,962 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:27:17,963 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:27:17,968 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:27:17,969 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:27:17,969 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:27:17,970 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:27:17,972 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:27:17,973 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:27:17,973 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:27:17,974 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:27:17,974 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:27:17,974 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:27:17,975 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:27:17,975 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 21:27:17,976 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 21:27:17,976 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 21:27:17,977 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:27:17,977 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 21:27:17,978 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-24 21:27:17,978 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-24 21:27:17,978 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 21:27:17,979 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:27:17,979 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:27:17,981 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:27:17,982 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:27:17,982 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:27:17,982 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:27:17,982 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:27:17,983 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:27:17,984 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:27:17,984 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-24 21:27:17,984 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-24 21:27:17,985 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:27:17,985 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:27:17,985 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:27:17,986 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:27:17,986 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-24 21:27:17,986 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_6fa4f8ab-2389-4b93-bb0b-bb4d7cf38197/bin/uautomizer-verify-NlZe1sFDwI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa4f8ab-2389-4b93-bb0b-bb4d7cf38197/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f41f3c018db74ffccd5759d166eb9816a1bf73b1747e3e539ecb5bf51feb56af [2023-11-24 21:27:18,440 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:27:18,470 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:27:18,473 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:27:18,474 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:27:18,475 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:27:18,476 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa4f8ab-2389-4b93-bb0b-bb4d7cf38197/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i [2023-11-24 21:27:21,605 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:27:21,960 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:27:21,965 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa4f8ab-2389-4b93-bb0b-bb4d7cf38197/sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i [2023-11-24 21:27:21,998 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa4f8ab-2389-4b93-bb0b-bb4d7cf38197/bin/uautomizer-verify-NlZe1sFDwI/data/3c6d1424a/bfe75e4a94c240b1bcddfe6dce88b544/FLAG6cda5b1ae [2023-11-24 21:27:22,018 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa4f8ab-2389-4b93-bb0b-bb4d7cf38197/bin/uautomizer-verify-NlZe1sFDwI/data/3c6d1424a/bfe75e4a94c240b1bcddfe6dce88b544 [2023-11-24 21:27:22,020 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:27:22,022 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:27:22,023 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:27:22,023 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:27:22,029 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:27:22,030 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:27:22" (1/1) ... [2023-11-24 21:27:22,031 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ed00345 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:27:22, skipping insertion in model container [2023-11-24 21:27:22,031 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:27:22" (1/1) ... [2023-11-24 21:27:22,094 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:27:22,630 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-24 21:27:22,631 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-24 21:27:22,632 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-24 21:27:22,632 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-24 21:27:22,710 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:27:22,751 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-24 21:27:22,765 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:27:22,820 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-24 21:27:22,821 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-24 21:27:22,822 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-24 21:27:22,822 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-24 21:27:22,860 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:27:22,876 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:27:22,936 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-24 21:27:22,937 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-24 21:27:22,937 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-24 21:27:22,938 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-24 21:27:22,954 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:27:23,048 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:27:23,049 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:27:23 WrapperNode [2023-11-24 21:27:23,049 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:27:23,050 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:27:23,050 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:27:23,051 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:27:23,066 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:27:23" (1/1) ... [2023-11-24 21:27:23,111 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:27:23" (1/1) ... [2023-11-24 21:27:23,150 INFO L138 Inliner]: procedures = 283, calls = 73, calls flagged for inlining = 11, calls inlined = 12, statements flattened = 336 [2023-11-24 21:27:23,151 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:27:23,152 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:27:23,152 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:27:23,152 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:27:23,163 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:27:23" (1/1) ... [2023-11-24 21:27:23,164 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:27:23" (1/1) ... [2023-11-24 21:27:23,171 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:27:23" (1/1) ... [2023-11-24 21:27:23,199 INFO L175 MemorySlicer]: Split 37 memory accesses to 5 slices as follows [2, 26, 5, 2, 2]. 70 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 0, 5, 0, 0]. The 17 writes are split as follows [0, 15, 0, 1, 1]. [2023-11-24 21:27:23,199 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:27:23" (1/1) ... [2023-11-24 21:27:23,200 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:27:23" (1/1) ... [2023-11-24 21:27:23,223 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:27:23" (1/1) ... [2023-11-24 21:27:23,229 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:27:23" (1/1) ... [2023-11-24 21:27:23,234 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:27:23" (1/1) ... [2023-11-24 21:27:23,238 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:27:23" (1/1) ... [2023-11-24 21:27:23,246 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:27:23,247 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:27:23,247 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:27:23,248 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:27:23,248 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:27:23" (1/1) ... [2023-11-24 21:27:23,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:27:23,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa4f8ab-2389-4b93-bb0b-bb4d7cf38197/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:27:23,293 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa4f8ab-2389-4b93-bb0b-bb4d7cf38197/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:27:23,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa4f8ab-2389-4b93-bb0b-bb4d7cf38197/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:27:23,342 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-11-24 21:27:23,343 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-11-24 21:27:23,343 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-11-24 21:27:23,344 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-11-24 21:27:23,345 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2023-11-24 21:27:23,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 21:27:23,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-24 21:27:23,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-24 21:27:23,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-24 21:27:23,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-24 21:27:23,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-24 21:27:23,347 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-11-24 21:27:23,348 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-11-24 21:27:23,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 21:27:23,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-24 21:27:23,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-11-24 21:27:23,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-11-24 21:27:23,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-11-24 21:27:23,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2023-11-24 21:27:23,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-24 21:27:23,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-24 21:27:23,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-11-24 21:27:23,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-11-24 21:27:23,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-11-24 21:27:23,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2023-11-24 21:27:23,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2023-11-24 21:27:23,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#2 [2023-11-24 21:27:23,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#3 [2023-11-24 21:27:23,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#4 [2023-11-24 21:27:23,354 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-24 21:27:23,354 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-11-24 21:27:23,354 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-11-24 21:27:23,354 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-24 21:27:23,354 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 21:27:23,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:27:23,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-24 21:27:23,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-24 21:27:23,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-24 21:27:23,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-24 21:27:23,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-24 21:27:23,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:27:23,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:27:23,358 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-24 21:27:23,614 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:27:23,618 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:27:24,737 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:27:25,133 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:27:25,133 INFO L309 CfgBuilder]: Removed 30 assume(true) statements. [2023-11-24 21:27:25,135 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:27:25 BoogieIcfgContainer [2023-11-24 21:27:25,135 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:27:25,138 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:27:25,138 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:27:25,142 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:27:25,142 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:27:22" (1/3) ... [2023-11-24 21:27:25,143 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e797a18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:27:25, skipping insertion in model container [2023-11-24 21:27:25,143 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:27:23" (2/3) ... [2023-11-24 21:27:25,145 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e797a18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:27:25, skipping insertion in model container [2023-11-24 21:27:25,146 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:27:25" (3/3) ... [2023-11-24 21:27:25,147 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_90-arrayloop2_racing.i [2023-11-24 21:27:25,170 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:27:25,171 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 59 error locations. [2023-11-24 21:27:25,171 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-24 21:27:25,346 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-24 21:27:25,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 176 places, 207 transitions, 434 flow [2023-11-24 21:27:25,580 INFO L124 PetriNetUnfolderBase]: 55/343 cut-off events. [2023-11-24 21:27:25,581 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-24 21:27:25,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 360 conditions, 343 events. 55/343 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1969 event pairs, 0 based on Foata normal form. 0/185 useless extension candidates. Maximal degree in co-relation 189. Up to 8 conditions per place. [2023-11-24 21:27:25,589 INFO L82 GeneralOperation]: Start removeDead. Operand has 176 places, 207 transitions, 434 flow [2023-11-24 21:27:25,601 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 176 places, 207 transitions, 434 flow [2023-11-24 21:27:25,611 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:27:25,618 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;@7373a535, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:27:25,618 INFO L358 AbstractCegarLoop]: Starting to check reachability of 91 error locations. [2023-11-24 21:27:25,622 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-24 21:27:25,623 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2023-11-24 21:27:25,623 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 21:27:25,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:27:25,624 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-24 21:27:25,624 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2023-11-24 21:27:25,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:27:25,630 INFO L85 PathProgramCache]: Analyzing trace with hash 908279, now seen corresponding path program 1 times [2023-11-24 21:27:25,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:27:25,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1854084058] [2023-11-24 21:27:25,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:27:25,649 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:27:25,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa4f8ab-2389-4b93-bb0b-bb4d7cf38197/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:27:25,655 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa4f8ab-2389-4b93-bb0b-bb4d7cf38197/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:27:25,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa4f8ab-2389-4b93-bb0b-bb4d7cf38197/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-24 21:27:25,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:27:25,823 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 21:27:25,828 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:27:25,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:27:25,924 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:27:25,925 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:27:25,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1854084058] [2023-11-24 21:27:25,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1854084058] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:27:25,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:27:25,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:27:25,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100653992] [2023-11-24 21:27:25,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:27:25,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:27:25,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:27:25,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:27:25,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:27:26,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 207 [2023-11-24 21:27:26,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 207 transitions, 434 flow. Second operand has 4 states, 4 states have (on average 102.75) internal successors, (411), 4 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:26,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:27:26,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 207 [2023-11-24 21:27:26,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:27:30,045 INFO L124 PetriNetUnfolderBase]: 7529/16637 cut-off events. [2023-11-24 21:27:30,045 INFO L125 PetriNetUnfolderBase]: For 260/262 co-relation queries the response was YES. [2023-11-24 21:27:30,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28060 conditions, 16637 events. 7529/16637 cut-off events. For 260/262 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 156072 event pairs, 4501 based on Foata normal form. 2886/17302 useless extension candidates. Maximal degree in co-relation 26788. Up to 7851 conditions per place. [2023-11-24 21:27:30,219 INFO L140 encePairwiseOnDemand]: 175/207 looper letters, 119 selfloop transitions, 4 changer transitions 0/225 dead transitions. [2023-11-24 21:27:30,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 225 transitions, 716 flow [2023-11-24 21:27:30,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:27:30,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-24 21:27:30,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 583 transitions. [2023-11-24 21:27:30,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7041062801932367 [2023-11-24 21:27:30,241 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 583 transitions. [2023-11-24 21:27:30,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 583 transitions. [2023-11-24 21:27:30,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:27:30,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 583 transitions. [2023-11-24 21:27:30,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 145.75) internal successors, (583), 4 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:30,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 207.0) internal successors, (1035), 5 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:30,266 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 207.0) internal successors, (1035), 5 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:30,268 INFO L175 Difference]: Start difference. First operand has 176 places, 207 transitions, 434 flow. Second operand 4 states and 583 transitions. [2023-11-24 21:27:30,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 225 transitions, 716 flow [2023-11-24 21:27:30,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 225 transitions, 716 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-24 21:27:30,284 INFO L231 Difference]: Finished difference. Result has 176 places, 179 transitions, 394 flow [2023-11-24 21:27:30,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=394, PETRI_PLACES=176, PETRI_TRANSITIONS=179} [2023-11-24 21:27:30,291 INFO L281 CegarLoopForPetriNet]: 176 programPoint places, 0 predicate places. [2023-11-24 21:27:30,292 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 179 transitions, 394 flow [2023-11-24 21:27:30,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 102.75) internal successors, (411), 4 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:30,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:27:30,293 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-24 21:27:30,313 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa4f8ab-2389-4b93-bb0b-bb4d7cf38197/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-24 21:27:30,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa4f8ab-2389-4b93-bb0b-bb4d7cf38197/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:27:30,501 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2023-11-24 21:27:30,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:27:30,502 INFO L85 PathProgramCache]: Analyzing trace with hash 908280, now seen corresponding path program 1 times [2023-11-24 21:27:30,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:27:30,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2133250280] [2023-11-24 21:27:30,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:27:30,504 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:27:30,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa4f8ab-2389-4b93-bb0b-bb4d7cf38197/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:27:30,509 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa4f8ab-2389-4b93-bb0b-bb4d7cf38197/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:27:30,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa4f8ab-2389-4b93-bb0b-bb4d7cf38197/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-24 21:27:30,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:27:30,682 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-24 21:27:30,684 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:27:30,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:27:30,780 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:27:30,781 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:27:30,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2133250280] [2023-11-24 21:27:30,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2133250280] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:27:30,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:27:30,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:27:30,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053756489] [2023-11-24 21:27:30,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:27:30,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:27:30,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:27:30,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:27:30,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:27:31,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 207 [2023-11-24 21:27:31,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 179 transitions, 394 flow. Second operand has 4 states, 4 states have (on average 104.75) internal successors, (419), 4 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:31,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:27:31,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 207 [2023-11-24 21:27:31,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:27:34,600 INFO L124 PetriNetUnfolderBase]: 7464/17559 cut-off events. [2023-11-24 21:27:34,601 INFO L125 PetriNetUnfolderBase]: For 778/780 co-relation queries the response was YES. [2023-11-24 21:27:34,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29834 conditions, 17559 events. 7464/17559 cut-off events. For 778/780 co-relation queries the response was YES. Maximal size of possible extension queue 557. Compared 170757 event pairs, 6385 based on Foata normal form. 3/15149 useless extension candidates. Maximal degree in co-relation 28468. Up to 11048 conditions per place. [2023-11-24 21:27:34,751 INFO L140 encePairwiseOnDemand]: 199/207 looper letters, 76 selfloop transitions, 5 changer transitions 0/183 dead transitions. [2023-11-24 21:27:34,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 183 transitions, 570 flow [2023-11-24 21:27:34,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:27:34,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-24 21:27:34,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 500 transitions. [2023-11-24 21:27:34,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6038647342995169 [2023-11-24 21:27:34,757 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 500 transitions. [2023-11-24 21:27:34,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 500 transitions. [2023-11-24 21:27:34,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:27:34,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 500 transitions. [2023-11-24 21:27:34,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:34,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 207.0) internal successors, (1035), 5 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:34,768 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 207.0) internal successors, (1035), 5 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:34,769 INFO L175 Difference]: Start difference. First operand has 176 places, 179 transitions, 394 flow. Second operand 4 states and 500 transitions. [2023-11-24 21:27:34,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 183 transitions, 570 flow [2023-11-24 21:27:34,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 183 transitions, 558 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-24 21:27:34,791 INFO L231 Difference]: Finished difference. Result has 178 places, 183 transitions, 427 flow [2023-11-24 21:27:34,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=427, PETRI_PLACES=178, PETRI_TRANSITIONS=183} [2023-11-24 21:27:34,793 INFO L281 CegarLoopForPetriNet]: 176 programPoint places, 2 predicate places. [2023-11-24 21:27:34,793 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 183 transitions, 427 flow [2023-11-24 21:27:34,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.75) internal successors, (419), 4 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:34,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:27:34,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-24 21:27:34,804 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa4f8ab-2389-4b93-bb0b-bb4d7cf38197/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-24 21:27:34,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa4f8ab-2389-4b93-bb0b-bb4d7cf38197/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:27:34,998 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2023-11-24 21:27:34,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:27:34,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1289630874, now seen corresponding path program 1 times [2023-11-24 21:27:34,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:27:35,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [182977820] [2023-11-24 21:27:35,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:27:35,000 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:27:35,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa4f8ab-2389-4b93-bb0b-bb4d7cf38197/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:27:35,002 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa4f8ab-2389-4b93-bb0b-bb4d7cf38197/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:27:35,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa4f8ab-2389-4b93-bb0b-bb4d7cf38197/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-24 21:27:35,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:27:35,149 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 21:27:35,151 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:27:35,192 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-24 21:27:35,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:27:35,201 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:27:35,201 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:27:35,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [182977820] [2023-11-24 21:27:35,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [182977820] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:27:35,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:27:35,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:27:35,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105120123] [2023-11-24 21:27:35,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:27:35,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:27:35,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:27:35,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:27:35,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:27:35,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 207 [2023-11-24 21:27:35,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 183 transitions, 427 flow. Second operand has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:35,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:27:35,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 207 [2023-11-24 21:27:35,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:27:38,075 INFO L124 PetriNetUnfolderBase]: 7464/17558 cut-off events. [2023-11-24 21:27:38,075 INFO L125 PetriNetUnfolderBase]: For 271/273 co-relation queries the response was YES. [2023-11-24 21:27:38,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29313 conditions, 17558 events. 7464/17558 cut-off events. For 271/273 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 170707 event pairs, 6385 based on Foata normal form. 0/15144 useless extension candidates. Maximal degree in co-relation 29279. Up to 11044 conditions per place. [2023-11-24 21:27:38,219 INFO L140 encePairwiseOnDemand]: 204/207 looper letters, 74 selfloop transitions, 3 changer transitions 0/182 dead transitions. [2023-11-24 21:27:38,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 182 transitions, 579 flow [2023-11-24 21:27:38,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:27:38,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:27:38,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 395 transitions. [2023-11-24 21:27:38,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6360708534621579 [2023-11-24 21:27:38,222 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 395 transitions. [2023-11-24 21:27:38,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 395 transitions. [2023-11-24 21:27:38,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:27:38,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 395 transitions. [2023-11-24 21:27:38,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:38,228 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 207.0) internal successors, (828), 4 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:38,229 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 207.0) internal successors, (828), 4 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:38,229 INFO L175 Difference]: Start difference. First operand has 178 places, 183 transitions, 427 flow. Second operand 3 states and 395 transitions. [2023-11-24 21:27:38,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 182 transitions, 579 flow [2023-11-24 21:27:38,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 182 transitions, 576 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:27:38,237 INFO L231 Difference]: Finished difference. Result has 178 places, 182 transitions, 428 flow [2023-11-24 21:27:38,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=428, PETRI_PLACES=178, PETRI_TRANSITIONS=182} [2023-11-24 21:27:38,239 INFO L281 CegarLoopForPetriNet]: 176 programPoint places, 2 predicate places. [2023-11-24 21:27:38,239 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 182 transitions, 428 flow [2023-11-24 21:27:38,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:38,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:27:38,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-24 21:27:38,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa4f8ab-2389-4b93-bb0b-bb4d7cf38197/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-24 21:27:38,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa4f8ab-2389-4b93-bb0b-bb4d7cf38197/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:27:38,451 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2023-11-24 21:27:38,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:27:38,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1289630875, now seen corresponding path program 1 times [2023-11-24 21:27:38,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:27:38,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1385615086] [2023-11-24 21:27:38,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:27:38,452 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:27:38,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa4f8ab-2389-4b93-bb0b-bb4d7cf38197/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:27:38,455 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa4f8ab-2389-4b93-bb0b-bb4d7cf38197/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:27:38,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa4f8ab-2389-4b93-bb0b-bb4d7cf38197/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-24 21:27:38,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:27:38,721 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 21:27:38,723 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:27:38,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-24 21:27:38,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:27:38,751 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:27:38,751 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:27:38,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1385615086] [2023-11-24 21:27:38,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1385615086] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:27:38,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:27:38,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:27:38,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972006105] [2023-11-24 21:27:38,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:27:38,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:27:38,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:27:38,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:27:38,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:27:39,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 207 [2023-11-24 21:27:39,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 182 transitions, 428 flow. Second operand has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:39,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:27:39,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 207 [2023-11-24 21:27:39,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:27:41,367 INFO L124 PetriNetUnfolderBase]: 7464/17557 cut-off events. [2023-11-24 21:27:41,367 INFO L125 PetriNetUnfolderBase]: For 273/275 co-relation queries the response was YES. [2023-11-24 21:27:41,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29313 conditions, 17557 events. 7464/17557 cut-off events. For 273/275 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 170799 event pairs, 6385 based on Foata normal form. 0/15145 useless extension candidates. Maximal degree in co-relation 29278. Up to 11044 conditions per place. [2023-11-24 21:27:41,636 INFO L140 encePairwiseOnDemand]: 204/207 looper letters, 74 selfloop transitions, 3 changer transitions 0/181 dead transitions. [2023-11-24 21:27:41,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 181 transitions, 580 flow [2023-11-24 21:27:41,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:27:41,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:27:41,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 395 transitions. [2023-11-24 21:27:41,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6360708534621579 [2023-11-24 21:27:41,640 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 395 transitions. [2023-11-24 21:27:41,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 395 transitions. [2023-11-24 21:27:41,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:27:41,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 395 transitions. [2023-11-24 21:27:41,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:41,645 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 207.0) internal successors, (828), 4 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:41,646 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 207.0) internal successors, (828), 4 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:41,647 INFO L175 Difference]: Start difference. First operand has 178 places, 182 transitions, 428 flow. Second operand 3 states and 395 transitions. [2023-11-24 21:27:41,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 181 transitions, 580 flow [2023-11-24 21:27:41,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 181 transitions, 574 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:27:41,654 INFO L231 Difference]: Finished difference. Result has 177 places, 181 transitions, 426 flow [2023-11-24 21:27:41,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=426, PETRI_PLACES=177, PETRI_TRANSITIONS=181} [2023-11-24 21:27:41,655 INFO L281 CegarLoopForPetriNet]: 176 programPoint places, 1 predicate places. [2023-11-24 21:27:41,656 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 181 transitions, 426 flow [2023-11-24 21:27:41,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:41,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:27:41,657 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-11-24 21:27:41,667 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa4f8ab-2389-4b93-bb0b-bb4d7cf38197/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-24 21:27:41,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa4f8ab-2389-4b93-bb0b-bb4d7cf38197/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:27:41,861 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2023-11-24 21:27:41,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:27:41,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1323854727, now seen corresponding path program 1 times [2023-11-24 21:27:41,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:27:41,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2099665540] [2023-11-24 21:27:41,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:27:41,862 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:27:41,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa4f8ab-2389-4b93-bb0b-bb4d7cf38197/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:27:41,864 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa4f8ab-2389-4b93-bb0b-bb4d7cf38197/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:27:41,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa4f8ab-2389-4b93-bb0b-bb4d7cf38197/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-24 21:27:41,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:27:41,994 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 21:27:41,995 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:27:42,004 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:27:42,004 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:27:42,004 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:27:42,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2099665540] [2023-11-24 21:27:42,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2099665540] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:27:42,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:27:42,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:27:42,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037409279] [2023-11-24 21:27:42,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:27:42,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:27:42,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:27:42,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:27:42,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:27:42,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 207 [2023-11-24 21:27:42,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 181 transitions, 426 flow. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:42,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:27:42,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 207 [2023-11-24 21:27:42,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:27:44,205 INFO L124 PetriNetUnfolderBase]: 7463/17579 cut-off events. [2023-11-24 21:27:44,206 INFO L125 PetriNetUnfolderBase]: For 275/277 co-relation queries the response was YES. [2023-11-24 21:27:44,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29341 conditions, 17579 events. 7463/17579 cut-off events. For 275/277 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 170788 event pairs, 6385 based on Foata normal form. 2/15158 useless extension candidates. Maximal degree in co-relation 29309. Up to 11044 conditions per place. [2023-11-24 21:27:44,320 INFO L140 encePairwiseOnDemand]: 204/207 looper letters, 78 selfloop transitions, 3 changer transitions 0/185 dead transitions. [2023-11-24 21:27:44,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 185 transitions, 600 flow [2023-11-24 21:27:44,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:27:44,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:27:44,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 403 transitions. [2023-11-24 21:27:44,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6489533011272142 [2023-11-24 21:27:44,323 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 403 transitions. [2023-11-24 21:27:44,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 403 transitions. [2023-11-24 21:27:44,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:27:44,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 403 transitions. [2023-11-24 21:27:44,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:44,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 207.0) internal successors, (828), 4 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:44,330 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 207.0) internal successors, (828), 4 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:44,330 INFO L175 Difference]: Start difference. First operand has 177 places, 181 transitions, 426 flow. Second operand 3 states and 403 transitions. [2023-11-24 21:27:44,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 185 transitions, 600 flow [2023-11-24 21:27:44,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 185 transitions, 590 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:27:44,338 INFO L231 Difference]: Finished difference. Result has 178 places, 181 transitions, 431 flow [2023-11-24 21:27:44,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=431, PETRI_PLACES=178, PETRI_TRANSITIONS=181} [2023-11-24 21:27:44,340 INFO L281 CegarLoopForPetriNet]: 176 programPoint places, 2 predicate places. [2023-11-24 21:27:44,340 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 181 transitions, 431 flow [2023-11-24 21:27:44,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:44,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:27:44,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:27:44,348 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa4f8ab-2389-4b93-bb0b-bb4d7cf38197/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-11-24 21:27:44,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa4f8ab-2389-4b93-bb0b-bb4d7cf38197/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:27:44,545 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2023-11-24 21:27:44,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:27:44,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1323852372, now seen corresponding path program 1 times [2023-11-24 21:27:44,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:27:44,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1994961112] [2023-11-24 21:27:44,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:27:44,546 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:27:44,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa4f8ab-2389-4b93-bb0b-bb4d7cf38197/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:27:44,548 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa4f8ab-2389-4b93-bb0b-bb4d7cf38197/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:27:44,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa4f8ab-2389-4b93-bb0b-bb4d7cf38197/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-24 21:27:44,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:27:44,722 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-24 21:27:44,724 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:27:44,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-24 21:27:44,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:27:44,775 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:27:44,775 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:27:44,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1994961112] [2023-11-24 21:27:44,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1994961112] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:27:44,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:27:44,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:27:44,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597777597] [2023-11-24 21:27:44,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:27:44,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:27:44,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:27:44,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:27:44,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:27:45,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 207 [2023-11-24 21:27:45,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 181 transitions, 431 flow. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:45,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:27:45,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 207 [2023-11-24 21:27:45,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:27:47,609 INFO L124 PetriNetUnfolderBase]: 7463/17575 cut-off events. [2023-11-24 21:27:47,610 INFO L125 PetriNetUnfolderBase]: For 290/292 co-relation queries the response was YES. [2023-11-24 21:27:47,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29341 conditions, 17575 events. 7463/17575 cut-off events. For 290/292 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 170746 event pairs, 6385 based on Foata normal form. 2/15158 useless extension candidates. Maximal degree in co-relation 29305. Up to 11048 conditions per place. [2023-11-24 21:27:47,712 INFO L140 encePairwiseOnDemand]: 202/207 looper letters, 75 selfloop transitions, 4 changer transitions 0/179 dead transitions. [2023-11-24 21:27:47,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 179 transitions, 585 flow [2023-11-24 21:27:47,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:27:47,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-24 21:27:47,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 489 transitions. [2023-11-24 21:27:47,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5905797101449275 [2023-11-24 21:27:47,714 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 489 transitions. [2023-11-24 21:27:47,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 489 transitions. [2023-11-24 21:27:47,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:27:47,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 489 transitions. [2023-11-24 21:27:47,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 122.25) internal successors, (489), 4 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:47,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 207.0) internal successors, (1035), 5 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:47,720 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 207.0) internal successors, (1035), 5 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:47,720 INFO L175 Difference]: Start difference. First operand has 178 places, 181 transitions, 431 flow. Second operand 4 states and 489 transitions. [2023-11-24 21:27:47,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 179 transitions, 585 flow [2023-11-24 21:27:47,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 179 transitions, 582 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:27:47,726 INFO L231 Difference]: Finished difference. Result has 178 places, 179 transitions, 432 flow [2023-11-24 21:27:47,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=432, PETRI_PLACES=178, PETRI_TRANSITIONS=179} [2023-11-24 21:27:47,728 INFO L281 CegarLoopForPetriNet]: 176 programPoint places, 2 predicate places. [2023-11-24 21:27:47,728 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 179 transitions, 432 flow [2023-11-24 21:27:47,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:47,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:27:47,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:27:47,735 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa4f8ab-2389-4b93-bb0b-bb4d7cf38197/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-11-24 21:27:47,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa4f8ab-2389-4b93-bb0b-bb4d7cf38197/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:27:47,932 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2023-11-24 21:27:47,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:27:47,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1323852371, now seen corresponding path program 1 times [2023-11-24 21:27:47,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:27:47,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [897048177] [2023-11-24 21:27:47,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:27:47,933 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:27:47,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa4f8ab-2389-4b93-bb0b-bb4d7cf38197/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:27:47,935 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa4f8ab-2389-4b93-bb0b-bb4d7cf38197/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:27:47,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa4f8ab-2389-4b93-bb0b-bb4d7cf38197/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-24 21:27:48,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:27:48,103 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 21:27:48,105 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:27:48,110 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-24 21:27:48,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:27:48,129 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:27:48,130 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:27:48,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [897048177] [2023-11-24 21:27:48,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [897048177] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:27:48,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:27:48,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:27:48,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866926106] [2023-11-24 21:27:48,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:27:48,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:27:48,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:27:48,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:27:48,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:27:48,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 207 [2023-11-24 21:27:48,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 179 transitions, 432 flow. Second operand has 4 states, 4 states have (on average 102.75) internal successors, (411), 4 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:48,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:27:48,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 207 [2023-11-24 21:27:48,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:27:50,786 INFO L124 PetriNetUnfolderBase]: 7463/17571 cut-off events. [2023-11-24 21:27:50,786 INFO L125 PetriNetUnfolderBase]: For 275/277 co-relation queries the response was YES. [2023-11-24 21:27:50,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29345 conditions, 17571 events. 7463/17571 cut-off events. For 275/277 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 170704 event pairs, 6385 based on Foata normal form. 2/15156 useless extension candidates. Maximal degree in co-relation 29309. Up to 11046 conditions per place. [2023-11-24 21:27:50,893 INFO L140 encePairwiseOnDemand]: 200/207 looper letters, 72 selfloop transitions, 7 changer transitions 0/177 dead transitions. [2023-11-24 21:27:50,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 177 transitions, 586 flow [2023-11-24 21:27:50,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:27:50,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-24 21:27:50,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 582 transitions. [2023-11-24 21:27:50,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5623188405797102 [2023-11-24 21:27:50,897 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 582 transitions. [2023-11-24 21:27:50,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 582 transitions. [2023-11-24 21:27:50,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:27:50,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 582 transitions. [2023-11-24 21:27:50,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 116.4) internal successors, (582), 5 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:50,904 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 207.0) internal successors, (1242), 6 states have internal predecessors, (1242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:50,905 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 207.0) internal successors, (1242), 6 states have internal predecessors, (1242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:50,905 INFO L175 Difference]: Start difference. First operand has 178 places, 179 transitions, 432 flow. Second operand 5 states and 582 transitions. [2023-11-24 21:27:50,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 177 transitions, 586 flow [2023-11-24 21:27:50,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 177 transitions, 578 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-24 21:27:50,911 INFO L231 Difference]: Finished difference. Result has 177 places, 177 transitions, 434 flow [2023-11-24 21:27:50,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=434, PETRI_PLACES=177, PETRI_TRANSITIONS=177} [2023-11-24 21:27:50,912 INFO L281 CegarLoopForPetriNet]: 176 programPoint places, 1 predicate places. [2023-11-24 21:27:50,913 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 177 transitions, 434 flow [2023-11-24 21:27:50,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 102.75) internal successors, (411), 4 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:50,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:27:50,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:27:50,925 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa4f8ab-2389-4b93-bb0b-bb4d7cf38197/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-11-24 21:27:51,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa4f8ab-2389-4b93-bb0b-bb4d7cf38197/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:27:51,117 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2023-11-24 21:27:51,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:27:51,117 INFO L85 PathProgramCache]: Analyzing trace with hash 911840466, now seen corresponding path program 1 times [2023-11-24 21:27:51,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:27:51,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1118513111] [2023-11-24 21:27:51,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:27:51,118 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:27:51,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa4f8ab-2389-4b93-bb0b-bb4d7cf38197/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:27:51,119 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa4f8ab-2389-4b93-bb0b-bb4d7cf38197/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:27:51,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa4f8ab-2389-4b93-bb0b-bb4d7cf38197/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-24 21:27:51,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:27:51,375 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-24 21:27:51,377 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:27:51,466 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-24 21:27:51,466 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 14 treesize of output 20 [2023-11-24 21:27:51,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:27:51,536 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:27:51,536 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:27:51,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1118513111] [2023-11-24 21:27:51,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1118513111] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:27:51,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:27:51,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:27:51,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677358809] [2023-11-24 21:27:51,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:27:51,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:27:51,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:27:51,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:27:51,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:27:51,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 207 [2023-11-24 21:27:51,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 177 transitions, 434 flow. Second operand has 4 states, 4 states have (on average 105.75) internal successors, (423), 4 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:51,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:27:51,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 207 [2023-11-24 21:27:51,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:27:54,017 INFO L124 PetriNetUnfolderBase]: 7529/16650 cut-off events. [2023-11-24 21:27:54,018 INFO L125 PetriNetUnfolderBase]: For 339/351 co-relation queries the response was YES. [2023-11-24 21:27:54,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28741 conditions, 16650 events. 7529/16650 cut-off events. For 339/351 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 155844 event pairs, 4501 based on Foata normal form. 12/14538 useless extension candidates. Maximal degree in co-relation 28703. Up to 7854 conditions per place. [2023-11-24 21:27:54,109 INFO L140 encePairwiseOnDemand]: 201/207 looper letters, 120 selfloop transitions, 5 changer transitions 0/221 dead transitions. [2023-11-24 21:27:54,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 221 transitions, 772 flow [2023-11-24 21:27:54,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:27:54,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-24 21:27:54,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 539 transitions. [2023-11-24 21:27:54,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6509661835748792 [2023-11-24 21:27:54,112 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 539 transitions. [2023-11-24 21:27:54,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 539 transitions. [2023-11-24 21:27:54,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:27:54,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 539 transitions. [2023-11-24 21:27:54,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 134.75) internal successors, (539), 4 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:54,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 207.0) internal successors, (1035), 5 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:54,118 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 207.0) internal successors, (1035), 5 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:54,118 INFO L175 Difference]: Start difference. First operand has 177 places, 177 transitions, 434 flow. Second operand 4 states and 539 transitions. [2023-11-24 21:27:54,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 221 transitions, 772 flow [2023-11-24 21:27:54,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 221 transitions, 758 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-24 21:27:54,124 INFO L231 Difference]: Finished difference. Result has 174 places, 175 transitions, 426 flow [2023-11-24 21:27:54,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=426, PETRI_PLACES=174, PETRI_TRANSITIONS=175} [2023-11-24 21:27:54,126 INFO L281 CegarLoopForPetriNet]: 176 programPoint places, -2 predicate places. [2023-11-24 21:27:54,126 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 175 transitions, 426 flow [2023-11-24 21:27:54,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 105.75) internal successors, (423), 4 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:54,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:27:54,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:27:54,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa4f8ab-2389-4b93-bb0b-bb4d7cf38197/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-11-24 21:27:54,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa4f8ab-2389-4b93-bb0b-bb4d7cf38197/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:27:54,333 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2023-11-24 21:27:54,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:27:54,333 INFO L85 PathProgramCache]: Analyzing trace with hash 911840467, now seen corresponding path program 1 times [2023-11-24 21:27:54,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:27:54,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [983479999] [2023-11-24 21:27:54,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:27:54,334 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:27:54,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa4f8ab-2389-4b93-bb0b-bb4d7cf38197/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:27:54,335 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa4f8ab-2389-4b93-bb0b-bb4d7cf38197/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:27:54,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa4f8ab-2389-4b93-bb0b-bb4d7cf38197/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-24 21:27:54,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:27:54,605 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-24 21:27:54,607 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:27:54,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:27:54,751 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-24 21:27:54,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:27:54,842 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:27:54,842 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:27:54,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [983479999] [2023-11-24 21:27:54,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [983479999] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:27:54,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:27:54,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:27:54,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135425492] [2023-11-24 21:27:54,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:27:54,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:27:54,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:27:54,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:27:54,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:27:55,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 207 [2023-11-24 21:27:55,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 175 transitions, 426 flow. Second operand has 5 states, 5 states have (on average 105.4) internal successors, (527), 5 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:55,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:27:55,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 207 [2023-11-24 21:27:55,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:27:58,207 INFO L124 PetriNetUnfolderBase]: 7608/17902 cut-off events. [2023-11-24 21:27:58,207 INFO L125 PetriNetUnfolderBase]: For 895/897 co-relation queries the response was YES. [2023-11-24 21:27:58,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30539 conditions, 17902 events. 7608/17902 cut-off events. For 895/897 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 174774 event pairs, 6517 based on Foata normal form. 2/15447 useless extension candidates. Maximal degree in co-relation 30447. Up to 11287 conditions per place. [2023-11-24 21:27:58,307 INFO L140 encePairwiseOnDemand]: 201/207 looper letters, 83 selfloop transitions, 5 changer transitions 0/182 dead transitions. [2023-11-24 21:27:58,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 182 transitions, 632 flow [2023-11-24 21:27:58,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:27:58,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-24 21:27:58,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 503 transitions. [2023-11-24 21:27:58,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.607487922705314 [2023-11-24 21:27:58,310 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 503 transitions. [2023-11-24 21:27:58,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 503 transitions. [2023-11-24 21:27:58,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:27:58,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 503 transitions. [2023-11-24 21:27:58,313 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 125.75) internal successors, (503), 4 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:58,315 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 207.0) internal successors, (1035), 5 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:58,316 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 207.0) internal successors, (1035), 5 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:58,316 INFO L175 Difference]: Start difference. First operand has 174 places, 175 transitions, 426 flow. Second operand 4 states and 503 transitions. [2023-11-24 21:27:58,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 182 transitions, 632 flow [2023-11-24 21:27:58,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 182 transitions, 616 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-24 21:27:58,325 INFO L231 Difference]: Finished difference. Result has 176 places, 179 transitions, 462 flow [2023-11-24 21:27:58,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=462, PETRI_PLACES=176, PETRI_TRANSITIONS=179} [2023-11-24 21:27:58,327 INFO L281 CegarLoopForPetriNet]: 176 programPoint places, 0 predicate places. [2023-11-24 21:27:58,327 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 179 transitions, 462 flow [2023-11-24 21:27:58,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 105.4) internal successors, (527), 5 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:58,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:27:58,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:27:58,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa4f8ab-2389-4b93-bb0b-bb4d7cf38197/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-11-24 21:27:58,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa4f8ab-2389-4b93-bb0b-bb4d7cf38197/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:27:58,533 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2023-11-24 21:27:58,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:27:58,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1797715589, now seen corresponding path program 1 times [2023-11-24 21:27:58,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:27:58,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1502756084] [2023-11-24 21:27:58,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:27:58,533 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:27:58,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa4f8ab-2389-4b93-bb0b-bb4d7cf38197/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:27:58,535 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa4f8ab-2389-4b93-bb0b-bb4d7cf38197/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:27:58,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fa4f8ab-2389-4b93-bb0b-bb4d7cf38197/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-24 21:27:58,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:27:58,824 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-24 21:27:58,827 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:27:58,935 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-24 21:27:59,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 28 treesize of output 27 [2023-11-24 21:27:59,382 INFO L349 Elim1Store]: treesize reduction 17, result has 19.0 percent of original size [2023-11-24 21:27:59,383 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 18 treesize of output 16 [2023-11-24 21:27:59,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 25 [2023-11-24 21:27:59,531 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 25 [2023-11-24 21:27:59,579 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 18 [2023-11-24 21:27:59,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:27:59,675 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:27:59,675 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:27:59,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1502756084] [2023-11-24 21:27:59,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1502756084] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:27:59,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:27:59,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-24 21:27:59,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944688678] [2023-11-24 21:27:59,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:27:59,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-24 21:27:59,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:27:59,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-24 21:27:59,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90